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| Table 1: | Engine Control Module Scan Tool Data Parameters |
| Table 2: | Engine Control Module (ECM) Scan Tool Output Controls |
The engine control module scan tool data list contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.
Use the engine scan tool data list only after the following is determined:
| • | The Diagnostic System Check - Vehicle is completed. |
| • | No diagnostic trouble codes (DTCs) |
| • | On-board diagnostics are functioning properly |
The scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The engine scan tool data list represents values that may be seen on a normally running engine.
Note: A scan tool that displays faulty data should not be used. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
Only the parameters listed below are referenced in this service manual for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls for engine diagnosis.
Parameter | System State | Expected Value | Description | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Operating Conditions: Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off/Brake Pedal Released | |||||||||||||||||||
5 V Reference 1, 2, 3, or 4 | Vehicle ON | 5 V | This parameter displays the voltage sensed on the 5 V reference circuits at the control module. The scan tool will display a higher value at higher voltage. The scan tool will display a lower value at lower voltage. | ||||||||||||||||
5 V Reference 1, 2, 3, or 4 Circuit Status | Vehicle ON | OK | This parameter displays OK if there is no 5 V reference circuit condition. If the circuit is shorted to ground or shorted to B+, Malfunction is displayed. | ||||||||||||||||
Accelerator Pedal Position | Accelerator pedal not actuated | 0 % | This parameter displays the angle of the APP as calculated by the control module using the signals from the APP sensors. | ||||||||||||||||
Accelerator pedal fully actuated | 100 % | ||||||||||||||||||
Accelerator Pedal Position | - | % | This parameter displays the angle of the accelerator pedal position (APP) as calculated by the control module using the signals from the APP sensors. | ||||||||||||||||
Accelerator Pedal Position When Engine Overspeed Detected | - | % | This parameter displays the accelerator pedal position (APP) observed upon initial detection of an overspeed condition. This value will be updated upon each overspeed condition. | ||||||||||||||||
A/C Compressor Clutch Relay Command | A/C ON | ON | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit as commanded by the control module. | ||||||||||||||||
A/C Compressor Clutch Relay Control Circuit High Voltage Test Status | A/C ON or OFF | OK/Not Run | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
A/C Compressor Clutch Relay Control Circuit Low Voltage Test Status | A/C ON or OFF | OK/Not Run | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
A/C Compressor Clutch Relay Control Circuit Open Test Status | A/C ON or OFF | OK/Not Run | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
A/C Disable - A/C Pressure Out of Range | A/C ON | No | This parameter displays whether the A/C pressure is out of range for normal operation as determined by the control module. | ||||||||||||||||
A/C Disengage 1-8 History | A/C ON | Reason for A/C Disengagement | The parameter displays the reason the air conditioning (A/C) compressor was disengaged. The scan tool displays None, A/C Pressure, Engine Speed, Battery Voltage, Anti Stall, RPM Unstable, wide open throttle (WOT), Launch Performance, Coolant Hot, Accelerator Pedal Position (APP), Air Bag Deploy, or A/C Relay DTC. | ||||||||||||||||
A/C High Side Pressure Sensor | A/C OFF | 0.75-1.5 V* | This parameter displays the voltage from the A/C high side pressure sensor signal circuit to the control module. *Varies with temperature and relative humidity. | ||||||||||||||||
A/C ON | 1.3-2.5 V* | ||||||||||||||||||
A/C High Side Pressure Sensor | A/C OFF | 450-650 kPa* (65-95 (PSI)* | This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the control module. *Varies with temperature and relative humidity. | ||||||||||||||||
Engine Speed at 2 000 RPM | 900-2 350 kPa* (162-341 PSI)* | ||||||||||||||||||
A/C OFF for WOT | A/C ON | No | This parameter displays whether the control module is commanding the A/C compressor clutch relay OFF for WOT. | ||||||||||||||||
A/C Request Signal | A/C ON | Yes | This parameter displays the state of the A/C request input to the control module from the heating, ventilation, and air conditioning (HVAC) controls. | ||||||||||||||||
A/C System Refrigerant Monitor Enabled This Ignition Cycle | - | Yes | The scan tool displays Yes when the A/C System Refrigerant Monitor is Enabled. If the scan tool displays No this could indicate a malfunction in the A/C System Refrigerant Monitor circuit. The A/C system must be turned ON for the diagnostic to run. | ||||||||||||||||
Air/Fuel Equivalence Ratio Command | - | Varies | This parameter displays the ratio of air to fuel as calculated by the control module based on various sensor inputs. The scan tool will display a lower air fuel ratio when a richer air to fuel mixture is commanded. The scan tool will display a higher air fuel ratio when a leaner air to fuel mixture is commanded. In closed loop operation the air fuel ratio should normally be approximately 14.7:1. | ||||||||||||||||
Ambient Air Temperature | - | °C (°F) Varies | This parameter displays the surrounding air temperature, at any given altitude. | ||||||||||||||||
APP Sensor 1 | Accelerator pedal not actuated | 0.88-1.08 V | This parameter displays the actual voltage on the accelerator pedal position (APP) Sensor 1 signal circuit as measured by the control module. | ||||||||||||||||
Accelerator pedal fully actuated | 4.17-4.37 V | ||||||||||||||||||
APP Sensor 1 and 2 | - | Agree | This parameter displays the results of a control module test that compares the signals from the APP sensors 1 and 2. The scan tool will display Agree or Disagree. Agree indicates that APP sensor 1 and APP sensor 2 voltages correspond to the same accelerator pedal position. Disagree indicates that APP sensor 1 and APP sensor 2 voltages correspond to different accelerator pedal positions. | ||||||||||||||||
APP Sensor 1 Circuit Status | Vehicle ON | OK | APP Sensor 1 Out of Range indicates that the sensed accelerator pedal position 1 sensor value is currently out of range or that a Malfunction has been detected based upon the sensed accelerator pedal position 1 sensor value being out of range. | ||||||||||||||||
APP Sensor 1 Position | Accelerator pedal not actuated | 0 % | This parameter displays the angle of the APP sensor 1 as calculated by the control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed. | ||||||||||||||||
Accelerator pedal fully actuated | 100 % | ||||||||||||||||||
APP Sensor 2 | Accelerator pedal not actuated | 0.39-0.59 V | This parameter displays the actual voltage on the accelerator pedal position (APP) Sensor 2 signal circuit as measured by the control module. | ||||||||||||||||
Accelerator pedal fully actuated | 2.02-2.22 V | ||||||||||||||||||
APP Sensor 2 Circuit Status | Vehicle ON | OK | APP Sensor 2 Out of Range indicates that the sensed accelerator pedal position 2 sensor value is currently out of range or that a Malfunction has been detected based upon the sensed accelerator pedal position 1 sensor value being out of range. | ||||||||||||||||
APP Sensor 2 Position | Accelerator pedal not actuated | 0 % | This parameter displays the angle of the APP sensor 2 as calculated by the control module using the signal from the APP sensor 2. APP sensor 2 is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed. | ||||||||||||||||
Accelerator pedal fully actuated | 100 % | ||||||||||||||||||
APP Sensors | - | 0 % | This parameter displays the average of the APP sensors as calculated by the throttle actuator control (TAC) module. The APP average is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed. | ||||||||||||||||
Autostart Inhibit Reason Autostart/Autostop Malfunction | - | No | This parameter displays that a immediate stop was commanded due to a Autostart/Autostop malfunction. | ||||||||||||||||
Autostart Inhibit Reason | - | No | The scan tool displays Yes if one of the following Autostart Inhibit Reason is detected. Control Function Active, Crank Abort, ECM Malfunction, ECM Request, Bonnet Ajar, Hybrid/EV Battery Pack Contactor Open, Hybrid/EV Battery Pack Power Low, Hybrid/EV Battery Pack State of Charge Low, Hybrid/EV Battery Pack Voltage Low, Hybrid/EV Propulsion System Inactive, Not Commanded, Run/Crank Not Active, Transmission Range. | ||||||||||||||||
Autostart Reason | - | No | This parameter displays Yes if one of the following Autostart Reason is detected. A/C Request, Acceleration Request, Accelerator Pedal Pressed, Auxiliary Transmission Fluid Pump Not Available, Brake Booster Weak Vacuum, Brake Pedal Released, Control Function Active, Drive Motor Inverter Temperature High, Drive Motor Temperature High, ECM Request, Engine Coolant Temperature Out of Range, Bonnet Ajar, Hybrid/EV Battery Module Voltage Low, Hybrid/EV Battery Pack Power Low, Hybrid/EV Battery Pack State of Charge Low, Hybrid/EV Battery Pack Temperature, Hybrid/EV Battery Pack Voltage Low, Hybrid/EV Propulsion System Inactive, Ignition Switch Start, Inclination, Invalid Data Received, Low Voltage Battery Discharge Current High, Low Voltage Battery State of Function Low, Low Voltage Battery State of Health Low, Low Voltage Battery Voltage Low, Maximum Autostop Time Exceeded, Minimum Engine Run Time Not met, Reduced Engine Power Active, Remote Vehicle Start Request, System Optimization, System Voltage Low, TCM Demand, Tow/Haul Mode Switch ON, Transmission Fluid Temperature Out of Range, Transmission In Reverse, Transmission Range, Vehicle Speed Too High. | ||||||||||||||||
Autostop Disable Reason | - | No | The scan tool displays Yes if one of the following Autostop Disable Reason is detected. 12 V Start Counter Exceeded, A/C Request, Acceleration Request, Accelerator Pedal Pressed, Auxilliary Transmission Fluid Pump Not Available, Brake Booster Weak Vacuum, Brake Pedal Released, Control Function Active, Drive Motor Inverter Temperature High, Drive Motor Temperature High, ECM Request, Engine Coolant Temperature Out of range, Engine Spped High, Generator Load High, Bonnet Ajar, Hybrid/EV Battery Module Voltage Low, Hybrid/EV Battery Pack Power Low, Hybrid/EV Battery Pack State of Charge Low, Hybrid/EV Battery Pack Temperature, Hybrid/EV Battery Pack Voltage Low, Hybrid/EV Propulsion System Inactive, Idle Boost Mode Active, Igntion Switch Start, Intake Manifold Weak Vacuum, Invalid Data Received, Low Voltage Battery Discharge Current High, Low Voltage Battery State of Charge Low, Low Voltage Battery State of Function Low, Low Voltage Battery State of Health Low, Low Voltage Battery Temperature Out of Range, Low Voltage Battery Voltage Low, Maximum Vehicle Stop Time Exceeded, Minimum Engine Run Time Not Met, Reduced Engine Power Active, Remote Vehicle Start Request, Run/Crank Not Active, Stop/Start Select Switch, System Optimization, System Voltage Low, TCM Request, Tow/Haul Mode Switch ON, Transmission Fluid Temperature Out of Range, Transmission in Reverse, Transmission Range, Vehicle Inclination, Vehicle Speed Threshold Not Reached, Vehicle Speed Too High, Wheel Slip Detected. | ||||||||||||||||
Average Fuel Age | - | Days | This parameter displays the average age of the fuel in the vehicle's fuel tank. | ||||||||||||||||
Axle Torque Command | - | N·m | This parameter displays the torque request for the slow response air path (control of the throttle). Based on current conditions the hybrid controller determines the optimum engine torque, which it sends as a request to the Engine Control Module. | ||||||||||||||||
BARO | - | 65-104 kPa (8-16 PSI) - Varies with altitude | This parameter displays the barometric pressure (BARO). The control module uses the barometric pressure sensor input for fuel control to compensate for altitude differences. | ||||||||||||||||
Brake Pedal Position Signal | - | Released | This parameter displays the serial data message of the brake position sensor signal from the electronic brake and traction control module. | ||||||||||||||||
Calculated Air Flow | - | g/s Varies | This parameter displays the air flow of the engine as calculated by the control module. | ||||||||||||||||
Calculated Catalyst Temperature | - | °C (°F) Varies | This parameter displays the catalyst converter temperature as calculated by the engine control module. | ||||||||||||||||
Calculated Engine Oil Temperature | - | °C (°F) Varies | This parameter displays the temperature of the engine oil as calculated by the control module using various sensor inputs. The engine oil temperature calculated has a range of values indicating a low value when the oil temperature is low to a high value when the oil temperature is high. | ||||||||||||||||
Calculated Time Until Next Engine Maintenance Mode | - | Days | This parameter displays the estimated time remaining until the next engine maintenance mode is required. | ||||||||||||||||
Calculated Time Until Next Fuel Maintenance Mode | - | Days | This parameter displays the estimated time remaining until the next fuel maintenance mode is required. | ||||||||||||||||
Camshaft Position | - | Varies | This parameter displays the position of the intake camshaft in terms of degrees of camshaft rotation (advance) from the park position (a value of zero represents the park position). | ||||||||||||||||
Camshaft Position Active Counter | - | 0-255 Counts | This parameter displays an incrementing counter when the control module receives a signal from the camshaft position sensors. | ||||||||||||||||
Camshaft Position Command | - | % | This parameter displays the commanded duty cycle for the intake cam phase output. | ||||||||||||||||
Camshaft Position Sensor | - | Engine Speed | This parameter displays the speed of the engine as calculated by the signal from the camshaft position sensor, shown in RPM. | ||||||||||||||||
Catalyst Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays the monitor completion status during the current driving/monitoring cycle. | ||||||||||||||||
Catalyst Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays the monitor enable status during the current driving/monitoring cycle. | ||||||||||||||||
Catalyst Monitor Not At Idle Test Conditions Met | - | Yes/No | This parameter displays the status of the catalyst monitor diagnostic. Off Idle Conditions Met indicates if the off idle conditions for the catalyst monitor diagnostic have been met. Once the Off Idle Conditions are met the vehicle can return to idle and allow the catalyst monitor diagnostic test to run. | ||||||||||||||||
Catalyst Monitor Test Counter | - | 0 Counts | This parameter displays the number of iterations of the catalyst monitor diagnostic test that have been performed since a code clear (used to determine if a sufficient number of tests have run to report a passing condition). | ||||||||||||||||
Catalyst Monitor Test Result | - | Varies | This parameter displays the status of the catalyst monitor diagnostic. | ||||||||||||||||
Catalyst Monitor Test State | - | Varies | This parameter displays when the catalyst monitor diagnostic is actively running a test. This condition will only be true when the vehicle is at idle. | ||||||||||||||||
Charging Mode | - | Depleting or Continuous | This parameter displays the currently active charging mode for an extended range electric vehicle. | ||||||||||||||||
Cold Start Up | - | Varies | This parameter displays whether the engine meets the conditions for a cold startup during the present ignition cycle. The scan tool displays Yes when the conditions for a cold startup are met during this ignition cycle. The scan tool displays No when the conditions for a cold startup are not met during the present ignition cycle. Conditions for a cold startup require the coolant temperature and the intake air temperature to be below a predetermined temperature and within a certain range of each other. These conditions must occur after the engine was warmed up to a specific temperature during the previous ignition cycle. | ||||||||||||||||
Cooling Fan Control Circuit High Voltage Test Status | - | Not Run | This parameter displays the diagnostic state of the output driver for the cooling fan relay control circuit. The scan tool will display OK, Malfunction or Not Run. The scan tool will display OK if the circuit is operating correctly. | ||||||||||||||||
Cooling Fan Control Circuit Low Voltage Test Status | - | Not Run | This parameter displays the diagnostic state of the output driver for the cooling fan relay control circuit. The scan tool will display OK, Malfunction or Not Run. The scan tool will display OK if the circuit is operating correctly. | ||||||||||||||||
Cooling Fan Control Circuit Open Test Status | - | Not Run | This parameter displays the diagnostic state of the output driver for the cooling fan relay control circuit. The scan tool will display OK, Malfunction or Not Run. The scan tool will display OK if the circuit is operating correctly. | ||||||||||||||||
Cooling Fan Motor Command | - | % | This parameter displays the amount of cooling commanded by the ECM in a percentage. | ||||||||||||||||
Crank Request Signal | - | No | This parameter displays Yes or No when a Crank Request Input Request is received. | ||||||||||||||||
Crankshaft Position Active Counter | - | 0-255 Counts | This parameter displays an incrementing counter when the control module receives a signal from the crankshaft position sensor. | ||||||||||||||||
Crankshaft Position Resynchronisation Counter | - | 0 Counts | This parameter displays the number of counts the control module resynchronises with the crankshaft position sensor. | ||||||||||||||||
Crankshaft Position Sensor | - | Engine Speed | This parameter displays the engine speed as calculated by the control module using the signal from the crankshaft position sensor. | ||||||||||||||||
Cruise Control | Cruise Control ON | Enabled/Disabled | This parameter displays the status of the cruise control system as determined by the control module. | ||||||||||||||||
Cruise Control Accelerate Switch | Cruise Control ON | Active/Inactive/Invalid | The scan tool displays ON, when the cruise ON/OFF switch is ON and the accelerate switch is pressed, the ECM detects a predetermined voltage value for this switch. | ||||||||||||||||
Cruise Control Cancel Switch | Cruise Control ON | Active/Inactive/Invalid | This parameter displays the status of the cruise control cancel switch. | ||||||||||||||||
Cruise Control Coast Switch | Cruise Control ON | Active/Inactive/Invalid | The scan tool displays ON, when the cruise ON/OFF switch is ON and the ECM detects a predetermined voltage value for the coast switch. | ||||||||||||||||
Cruise Control Disengage History 1-8 | Cruise Control ON | Reason for Cruise Disengagement | The parameter displays the last 8 cruise control disengages in order from 1-8, with 8 being the most recent. There are approximately 40 possible causes for the cruise control to disengage. | ||||||||||||||||
Cruise Control Inhibit Reason | Cruise Control ON | Varies | The parameter displays the reason why the cruise control system is inhibited. There are approximately 40 possible causes for the cruise control to be inhibited. | ||||||||||||||||
Cruise Control ON/OFF Switch | Cruise Control ON | ON/OFF | The engine control module (ECM) monitors the signal circuit of the cruise control switch. A closed switch is displayed as ON. | ||||||||||||||||
Cruise Control Release Switch | Cruise Control ON | Active/Inactive/Invalid | The scan tool displays ON, when the cruise ON/OFF switch is ON and the resume switch is pressed, the ECM detects a predetermined voltage value for the resume switch. | ||||||||||||||||
Cruise Control Set Switch | Cruise Control ON | Active/Inactive/Invalid | The scan tool displays ON, when the cruise ON/OFF switch is ON and the ECM detects a predetermined voltage value for the set switch. | ||||||||||||||||
Current Gear | -- | 1 | This parameter displays the current forward gear of the transmission | ||||||||||||||||
Current Gear When Engine Overspeed Detected | - | Varies | This parameter displays the transmission actual gear observed upon initial detection of an overspeed condition. | ||||||||||||||||
Cylinder 1-4 Current Misfire Counter | - | 0 Counts | The scan tool displays 0-255 Counts. This parameter displays the number of misfires that have been detected during the last 200 cylinder firing events. The counters may normally display some activity, but the activity should be nearly equal for all of the cylinders, and in low numbers. | ||||||||||||||||
Cylinder 1-4 History Misfire Counter | - | 0 Counts | The scan tool displays 0-255 Counts. The misfire history counters display the total level of misfire that has been detected on each cylinder. The misfire history counters will not update or show any activity until a misfire DTC P0300 has become active. The misfire history counters will update every 200 cylinder firing events. | ||||||||||||||||
Cylinder 1-4 Injector Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the injector control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Cylinder 1-4 Injector Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the injector control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Cylinder 1-4 Injector Control Circuit Open Test Status | - | OK | This parameter displays the state of the injector control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Cylinder 1-4 Injector Disabled - Misfire Detected | - | No | This parameter displays the status of the fuel injector driver by the control module. The scan tool will display Yes if the fuel injector is being disabled due to a misfire detection. The scan tool will display No if the fuel injector is not being disabled by the control module due to a misfire. | ||||||||||||||||
Cylinder 1-4 Knock Detected | - | No | This parameter displays the status of each cylinder for knock detection by the control module. The scan tool will display Yes if a knock condition has been detected related to that cylinder combustion event. The scan tool will display No if there is no knock condition detected related to that cylinder combustion event. | ||||||||||||||||
Deceleration Fuel Cut-Off | - | Inactive | This parameter displays the status of the operating mode used to turn off the fuel injectors during certain deceleration conditions. When the scan tool displays Active, the control module has turned off the fuel injectors. When the scan tool displays Inactive, the fuel system is operating normally. | ||||||||||||||||
Desired ECT | - | °C (°F) Varies | This parameter displays the desired engine coolant temperature (ECT) in °C (°F). | ||||||||||||||||
Desired Exhaust Camshaft Position | - | Varies | This parameter displays the desired exhaust camshaft angle as commanded by the engine control module. | ||||||||||||||||
Desired Intake Camshaft Position | - | Varies | This parameter displays the desired intake camshaft angle as commanded by the engine control module. | ||||||||||||||||
Desired Intake Manifold Runner Control Valve Position | - | Opened or Closed | This parameter displays the commanded state of the Intake Manifold Runner Control output as Opened or Closed. | ||||||||||||||||
Desired Throttle Position | - | 2-6 % | This parameter displays the desired throttle position angle commanded by the control module. | ||||||||||||||||
Distance Since DTC Cleared | - | Varies | This parameter displays the distance accumulated since an emission diagnostic trouble code was cleared. The scan tool will display increasing distance as the vehicle is driven. | ||||||||||||||||
Distance Since First Malfunction | Vehicle ON | 0 km/h (0 MPH) | This parameter displays in kilometres or miles the distance travelled since a Malfunction occurred. | ||||||||||||||||
Distance Since Last Malfunction | - | Varies | This parameter displays the distance accumulated when the emission diagnostic trouble code last failed. | ||||||||||||||||
Distance Since Last Oil Pressure Warning | Vehicle ON | 0 km/h (0 MPH) | This parameter displays in kilometres or miles the distance travelled since the last oil pressure warning Malfunction occurred. | ||||||||||||||||
Drive Motor No Crank At Restart | - | No | Starting System indicates that a condition in the starting system has been detected that would prevent a re-start of the vehicle, and thus Autostops have been disabled. | ||||||||||||||||
Driver Requested Axle Torque | - | Varies | This parameter displays the drivers requested axle torque as determined by the ECM. The ECM monitors accelerator pedal position and determines how much axle torque is required in order to meet the drivers request. The parameter display range is -8192 to +8191.75 N·m. | ||||||||||||||||
Driver Selected Autostart/Autostop Disable Mode Active | - | No | This parameter displays if the Driver Selected Autostart/Autostop Disable Mode is active. | ||||||||||||||||
Driver Selected Autostart/Autostop Disable Mode Available | - | Yes | This parameter displays if the Driver Selected Autostart/Autostop Disable Mode is available. | ||||||||||||||||
Driver Selected Economy Mode Active | - | No | This parameter displays if the Driver Selected Economy Mode is active. | ||||||||||||||||
Driver Selected Economy Mode Available | - | Yes | This parameter displays if the Driver Selected Economy Mode is available. | ||||||||||||||||
Driver Selected Hold Mode Active | - | No | This parameter displays if the Driver Selected Hold Mode is active. | ||||||||||||||||
Driver Selected Hold Mode Available | - | Yes | This parameter displays if the Driver Selected Hold Mode is available. | ||||||||||||||||
Driver Selected Mountain Mode Active | - | No | This parameter displays if the Driver Selected Mountain Mode is active. | ||||||||||||||||
Driver Selected Mountain Mode Available | - | Yes | This parameter displays if the Driver Selected Mountain Mode is available. | ||||||||||||||||
Driver Selected Sport Mode Active | - | No | This parameter displays if the Driver Selected Sport Mode is active. | ||||||||||||||||
Driver Selected Sport Mode Available | - | No | This parameter displays if the Driver Selected Sport Mode is available. | ||||||||||||||||
DTC Present | - | No | This parameter displays that a Diagnostic Trouble Code (DTC) has been set that prevents Autostops. | ||||||||||||||||
ECM Authentication Status | Vehicle ON | Unknown/Incorrect/Negative Response/Valid | ECM Authentication Status indicates the result of the comparison between the last received immobiliser response and the expected response calculated into the ECM. | ||||||||||||||||
ECM Challenge Status | - | Valid | This parameter displays the immobiliser system status of the ECM challenge. This indicates whether the currently calculated ECM challenge is valid. | ||||||||||||||||
ECM Response Source | Vehicle ON | Ignition Switch Start/Remote Vehicle Start/Exterior Power Take Off (PTO) Vehicle Start | ECM Response Source indicates the source used to calculate the ECM response. | ||||||||||||||||
ECT Sensor | - | -39 to +140°C (-38 to +284°F) Varies | This parameter displays the temperature of the engine coolant based on input to the control module from the engine coolant temperature (ECT) sensor. | ||||||||||||||||
ECT vs. IAT Sensor Temperature at Last ECT vs. RCT Malfunction Detection | - | Agree | The ECT/RCT rationality diagnostic will compare the two values during a cold start to determine if one of the sensors is reading incorrectly. If the two coolant sensor values disagree, the sensor values will then be compared to the Intake Air Temperature (IAT) sensor value. | ||||||||||||||||
EGR/Camshaft Position Monitor Complete | - | Yes/No | This parameter displays the status of the EGR/Camshaft Position Monitor. The parameter will display Yes when the EGR/Camshaft Position Monitor is complete. | ||||||||||||||||
EGR/Camshaft Position Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays the status of the EGR/Camshaft Position Monitor for this Ignition Cycle. The parameter will display Yes when the EGR/Camshaft Position Monitor is complete this Ignition Cycle. | ||||||||||||||||
EGR/Camshaft Position Monitor Enabled | - | Yes/No | This parameter displays the status of the EGR/Camshaft Position Monitor. The parameter will display Yes when the EGR/Camshaft Position Monitor is Enabled. | ||||||||||||||||
EGR/Camshaft Position Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays the status of the EGR/Camshaft Position Monitor for this Ignition Cycle. The parameter will display Yes when the EGR/Camshaft Position Monitor is Enabled this Ignition Cycle. | ||||||||||||||||
Engine Controls Ignition Relay Command | - | ON | This parameter displays the commanded state of the engine control ignition relay control circuit. The scan tool will display ON or OFF. ON indicates the engine control ignition relay control circuit is being grounded by the control module, allowing voltage to other control module circuits and systems. OFF indicates the engine control ignition relay is not being commanded ON by the control module. | ||||||||||||||||
Engine Controls Ignition Relay Control Circuit High Voltage Test Status | - | Not Run | This parameter displays the state of the engine control ignition relay control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit Malfunctions are detected during the current test. | ||||||||||||||||
Engine Controls Ignition Relay Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the engine control ignition relay control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit Malfunctions are detected during the current test. | ||||||||||||||||
Engine Controls Ignition Relay Control Circuit Open Test Status | - | Not Run | This parameter displays the state of the engine control ignition relay control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit Malfunctions are detected during the current test. | ||||||||||||||||
Engine Controls Ignition Relay Feedback Signal | - | B+ | This parameter displays the voltage available at the engine control ignition relay circuit of the control module. | ||||||||||||||||
Engine Coolant Thermostat Heater Command | - | % | This parameter displays the commanded duty cycle for the engine coolant thermostat. | ||||||||||||||||
Engine Coolant Thermostat Heater Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the Engine Coolant Thermostat Heater control circuit. The parameter displays Malfunction if the Engine Coolant Thermostat Heater control circuit is shorted to voltage. | ||||||||||||||||
Engine Coolant Thermostat Heater Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the Engine Coolant Thermostat Heater control circuit. The parameter displays Malfunction if the Engine Coolant Thermostat Heater control circuit is shorted to ground. | ||||||||||||||||
Engine Coolant Thermostat Heater Control Circuit Open Test Status | - | OK | This parameter displays the state of the Engine Coolant Thermostat Heater control circuit. The parameter displays Malfunction if the Engine Coolant Thermostat Heater control circuit is open. | ||||||||||||||||
Engine Load | Engine Idling | 11-30 % Varies | This parameter displays the calculated engine load in percent based on inputs to the control module from various engine sensors. | ||||||||||||||||
Engine speed at 2 500 RPM | 25-40 % | ||||||||||||||||||
Engine Maintenance Mode | - | Active/Inactive | This parameter displays that an Engine Maintenance Mode is currently active or inactive. | ||||||||||||||||
Engine Maintenance Mode Completed This Ignition Cycle | - | True/False | This parameter displays that an Engine Maintenance Mode has run to completion during the current ignition cycle. | ||||||||||||||||
Engine Maintenance Mode Completion Status | - | % | This parameter displays a percent complete of a currently running engine maintenance mode. Once 100 % is reached, the Engine Maintenance Mode has completed this Ignition Cycle. | ||||||||||||||||
Engine Maintenance Mode Counter | - | Varies | This parameter displays the accumulated number of engine maintenance mode events over the life of the engine control module. | ||||||||||||||||
Engine OFF Time | Ignition Switch in the OFF Position | Varies | This parameter displays the amount of time that has elapsed since the engine was last cycled OFF. The scan tool displays the time in hours, minutes, and seconds. The engine OFF time will reset to zero when the engine starts. | ||||||||||||||||
Engine Oil Pressure Switch | - | OK | This parameter displays the state of the engine oil pressure as determined by the control module. The control module monitors the engine oil pressure switch to determine if the engine oil pressure is sufficient. The scan tool displays Low when the engine oil pressure is below a predetermined value. | ||||||||||||||||
Engine Oil Temperature When Engine Overspeed Detected | - | Varies | This parameter displays the engine oil temperature observed upon initial detection of an overspeed condition. This value will be updated after each overspeed condition. | ||||||||||||||||
Engine Run Time | Engine Operating | Varies | This parameter displays the time elapsed since the engine was started. The scan tool will display the time in hours, minutes and seconds. The engine run time will reset to zero when the engine stops running. | ||||||||||||||||
Engine Speed | Engine Cranking | Greater than 60 RPM | This parameter displays the speed of the engine crankshaft rotation from information received from the crankshaft position sensor. | ||||||||||||||||
Engine Idling | Approximately 650-950 RPM | ||||||||||||||||||
Engine Speed When Engine Overspeed Detected | - | RPM | This parameter displays the engine speed observed upon initial detection of an overspeed condition. This value will be updated after each overspeed condition. | ||||||||||||||||
EVAP Leak Detection Pump Command | - | OFF | This parameter displays the commanded state of the EVAP Leak Check Pump vacuum pump output | ||||||||||||||||
EVAP Leak Detection Pump Output Circuit Open Test Status | - | OK | This parameter displays the state of the EVAP Leak Detection Pump Output circuit. The parameter displays Malfunction if the EVAP Leak Detection Pump Output circuit is opened. | ||||||||||||||||
EVAP Leak Detection Pump Pressure | - | kPa | This parameter displays EVAP Leak Detection Pump absolute pressure measured by a sensor. | ||||||||||||||||
EVAP Leak Detection Pump Pressure | - | Volts | This parameter displays the EVAP Leak Check Pump (ELCP) pressure value input to the control module as a voltage. | ||||||||||||||||
EVAP Leak Detection Pump Service Bay Test Abort Reason | - | Varies | This parameter displays the EVAP Leak Detection Pump Service Bay Test Abort Reason. | ||||||||||||||||
EVAP Leak Detection Pump Service Bay Test Denial Reason | - | Varies | This parameter displays the reason the EVAP service bay test was denied. | ||||||||||||||||
EVAP Leak Detection Pump Service Bay Test Result | - | Varies | This parameter displays the result of the EVAP service bay test. | ||||||||||||||||
EVAP Leak Detection Pump Switching Valve Command | - | Not Venting/ Venting | This parameter displays the commanded state of the EVAP Leak Check Pump switching valve output. | ||||||||||||||||
EVAP Leak Detection Pump Switching Valve Output Circuit High Voltage Test Status | - | OK | This parameter displays the state of the EVAP Leak Detection Pump Switching Valve Output circuit. The parameter displays Malfunction if the EVAP Leak Detection Pump Switching Valve Output circuit is shorted to voltage. | ||||||||||||||||
EVAP Leak Detection Pump Switching Valve Output Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the EVAP Leak Detection Pump Switching Valve Output circuit. The parameter displays Malfunction if the EVAP Leak Detection Pump Switching Valve Output circuit is shorted to ground. | ||||||||||||||||
EVAP Leak Detection Pump Switching Valve Output Circuit Open Test Status | - | OK | This parameter displays the state of the EVAP Leak Detection Pump Switching Valve Output circuit. The parameter displays Malfunction if the EVAP Leak Detection Pump Switching Valve Output circuit is opened. | ||||||||||||||||
EVAP Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||||||
EVAP Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||||||
EVAP Purge Solenoid Valve Command | - | 10-20 % | This parameter displays the on-time or duty cycle of the EVAP canister purge solenoid commanded by the control module. Zero percent indicates no purge. One hundred percent indicates full purge. | ||||||||||||||||
EVAP Purge Solenoid Valve Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the evaporative emission (EVAP) purge solenoid control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
EVAP Purge Solenoid Valve Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the evaporative emission (EVAP) purge solenoid control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
EVAP Purge Solenoid Valve Control Circuit Open Test Status | - | OK | This parameter displays the status of the evaporative emission (EVAP) purge solenoid control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
EVAP Test | - | Varies | This parameter displays the state of the EVAP Test. | ||||||||||||||||
EVAP Vent Solenoid Valve Command | - | OFF | This parameter displays the state of the EVAP canister vent solenoid commanded by the control module. The scan tool displays ON Venting or OFF Not Venting. | ||||||||||||||||
EVAP Vent Solenoid Valve Control Circuit High Voltage Test Status | - | OK | This parameter displays the diagnostic state of the output driver for the evaporative emission vent solenoid control circuit as determined by the engine control module. The scan tool will display OK, Malfunction or Not Run. The scan tool will display OK if the circuit is operating correctly. | ||||||||||||||||
EVAP Vent Solenoid Valve Control Circuit Low Voltage Test Status | - | OK | This parameter displays the diagnostic state of the output driver for the evaporative emission vent solenoid control circuit as determined by the engine control module. The scan tool will display OK, Malfunction or Not Run. The scan tool will display OK if the circuit is operating correctly. | ||||||||||||||||
EVAP Vent Solenoid Valve Control Circuit Open Test Status | - | OK | This parameter displays the diagnostic state of the output driver for the evaporative emission vent solenoid control circuit as determined by the engine control module. The scan tool will display OK, Malfunction or Not Run. The scan tool will display OK if the circuit is operating correctly. | ||||||||||||||||
Exhaust Camshaft Position | - | Engine Idling: 5 Degrees Engine Speed at 2,000 RPM: 19 Degrees | This parameter displays the actual exhaust camshaft position in degrees. | ||||||||||||||||
Exhaust Camshaft Position Active Counter | - | 0-255 Counts | This parameter displays an incrementing counter when the control module receives a signal from the exhaust camshaft position sensor. | ||||||||||||||||
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is shorted to voltage. | ||||||||||||||||
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is shorted to ground. | ||||||||||||||||
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status | - | OK | This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is open. | ||||||||||||||||
Exhaust Camshaft Position Command | - | 45-51 % | This parameter displays the on-time or duty cycle of the exhaust camshaft position actuator solenoid valve as commanded by the engine control module. | ||||||||||||||||
Exhaust Camshaft Position Variance | - | 0.0-0.2 Degrees | This parameter displays in degrees, the difference between the desired exhaust camshaft position and the actual exhaust camshaft position. | ||||||||||||||||
Fuel Control Loop Status | - | Closed Loop | This parameter displays the state of the fuel control system as commanded by the control module. Closed loop operation indicates that the control module is controlling the fuel delivery based off the oxygen sensors input signal. In open loop operation the control module ignores the oxygen sensor input signal and bases the amount of fuel to be delivered on other sensor inputs. | ||||||||||||||||
Fuel Economy | Engine Idling | Litres per Hour | This Parameter displays the instant fuel consumption rate of the engine in litres per hour. | ||||||||||||||||
Fuel Enrichment - Hot Catalyst | - | No | This parameter displays Yes if the engine control module is commanding catalyst converter protection. | ||||||||||||||||
Fuel Enrichment - Hot Coolant | - | Inactive | This parameter displays the status of the fuel delivery system. The scan tool will display Active if the fuel system is running in open loop due to a temperature condition. The scan tool will display Inactive if the fuel system is operating normally. | ||||||||||||||||
Fuel Level Sensor | - | Varies | This parameter displays the approximate fuel level in the fuel tank as a voltage. The control module calculates this level using the signal from the sensor used to monitor the fuel in the tank. The scan tool will display a low reading when the fuel level in the tank is near empty. The scan tool will display a high reading when the fuel level in the tank is high or near full. | ||||||||||||||||
Fuel Maintenance Mode | - | Inactive | This parameter displays if the Fuel Maintenance Mode is active or inactive. | ||||||||||||||||
Fuel Maintenance Mode Counter | - | 0-255 | This parameter displays the number of fuel maintenance mode events over the life of the Engine Control Module (ECM). | ||||||||||||||||
Fuel Pump Enable Circuit High Voltage Test Status | - | OK/Not Run | This parameter displays the state of the fuel pump relay control circuit. The parameter displays Malfunction if the fuel pump control circuit is shorted to voltage. | ||||||||||||||||
Fuel Pump Enable Circuit Low Voltage Test Status | - | OK/Not Run | This parameter displays the state of the fuel pump control circuit. The parameter displays Malfunction if the fuel pump relay control circuit is shorted to ground. | ||||||||||||||||
Fuel Pump Enable Circuit Open Test Status | - | OK/Not Run | This parameter displays the state of the fuel pump control circuit. The parameter displays Malfunction if the fuel pump control circuit is opened. | ||||||||||||||||
Fuel Pump Enable Command | - | ON | This parameter displays the control modules commanded state of the fuel pump control circuit. | ||||||||||||||||
Fuel System Monitor Complete | - | No | This parameter displays Yes when the Fuel System Monitor is complete. | ||||||||||||||||
Fuel System Monitor Complete This Ignition Cycle | - | No | This parameter displays Yes when the Fuel System Monitor is Complete This Ignition Cycle. | ||||||||||||||||
Fuel System Monitor Enabled | - | No | This parameter displays Yes when the Fuel System Monitor is enabled. | ||||||||||||||||
Fuel System Monitor Enabled This Ignition Cycle | - | No | This parameter displays Yes when the Fuel System Monitor is Enabled This Ignition Cycle. | ||||||||||||||||
Fuel Tank Pressure Sensor | - | 1.3-1.7 V | This parameter displays the voltage signal received by the control module from the fuel tank pressure sensor. | ||||||||||||||||
Fuel Tank Pressure Sensor | - | Varies | This parameter displays the pressure/vacuum inside the fuel tank. A negative value indicates a vacuum, while a positive value indicates a pressure. | ||||||||||||||||
Fuel Tank Rated Capacity | - | 70 L (18.4 Gal) | This parameter displays the rated maximum quantity of fuel the fuel tank will hold. This is calibrated in the control module to match the vehicle. | ||||||||||||||||
Fuel Trim Memory Cell | - | Varies | This parameter displays the fuel trim cell number as calculated by the control module based on engine speed and load inputs. The scan tool will display a lower number as conditions are closer to idle, and a higher number as conditions approach maximum engine speed and maximum load. | ||||||||||||||||
Fuel Trim System Test State | - | Monitoring | This parameter indicates the status of the Fuel Trim System Test. The scan tool will display Disabled, Enabled, Monitoring, or Run Purge Test. | ||||||||||||||||
HO2S 1 or HO2S 2 | Vehicle ON, Engine OFF | 50-900 mV | This parameter indicates the heated oxygen sensor (HO2S) sensor 1 or 2, output voltage as measured by the control module. The scan tool will display a higher value during a rich condition, and a lower value during a lean condition. | ||||||||||||||||
Engine Operating | Varies | ||||||||||||||||||
HO2S 1 or HO2S 2 Heater | - | 0.42-0.62 A | This parameter displays the amperage of the HO2S heater commanded by the engine control module. | ||||||||||||||||
HO2S 1 or HO2S 2 Heater Command | - | 0-99 % | This parameter displays the commanded state of the HO2S 1 or HO2S 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON. | ||||||||||||||||
HO2S 1 or HO2S 2 Heater Command | - | ON | This parameter displays the commanded state of the HO2S 1 or HO2S 2 heater circuit by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF. | ||||||||||||||||
HO2S 1 or HO2S 2 Heater Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the control circuit for the HO2S 1 or HO2S 2. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit Malfunctions are detected during the current test. | ||||||||||||||||
HO2S 1 or HO2S 2 Heater Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the control circuit for the HO2S 1 or HO2S 2. The scan tool displays OK, Malfunction or Not Run. OK indicates that no circuit Malfunctions are detected during the current test. | ||||||||||||||||
HO2S 1 or HO2S 2 Heater Control Circuit Open Test Status | - | OK | This parameter displays the status of the control circuit for the HO2S 1 or HO2S 2. The scan tool displays OK, Malfunction or Not Run. OK indicates that no circuit Malfunctions are detected during the current test. | ||||||||||||||||
HO2S Heater Monitor Complete | Engine Idling | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||||||
HO2S Heater Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||||||
HO2S Heater Monitor Enabled | Engine Idling | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||||||
HO2S Heater Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||||||
Bonnet Ajar Switch 1 | - | Ajar | This parameter displays the Bonnet Ajar 1 switch as either Closed or Ajar. | ||||||||||||||||
Bonnet Ajar Switch 2 | - | Ajar | This parameter displays the Bonnet Ajar 2 switch as either Closed or Ajar. | ||||||||||||||||
Bonnet Position | - | Open | This parameter displays the Bonnet Position as Closed, Ajar, Open or Invalid. Bonnet Open indicates that the state of the hood switch prevented an Autostop. Autostops are not allowed with the bonnet open. | ||||||||||||||||
Hybrid/EV Battery Pack Charge Remaining | - | Varies | This parameter displays the amount of charge left in the Hybrid/EV Battery Pack. | ||||||||||||||||
Hybrid Transmission Mode Command | - | Park/Neutral | This parameter displays the current Hybrid Transmission Mode.
| ||||||||||||||||
IAT Sensor | - | -39 to +140°C (-38 to +284°F) | This parameter displays the temperature of the air entering the air induction system based on input to the control module from the intake air temperature (IAT) sensor. | ||||||||||||||||
Ignition 1 Signal | - | B+ | This parameter displays B+ when the control module detects a voltage at the ignition 1 input terminal. | ||||||||||||||||
Ignition Accessory Signal | - | ON | This parameter displays the state of the ignition accessory position input to the control module from the ignition switch. | ||||||||||||||||
Ignition Coil 1 and 4 Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Ignition Coil 1 and 4 Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit Malfunction are detected during the current test. | ||||||||||||||||
Ignition Coil 1 and 4 Control Circuit Open Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The scan tool displays OK, Malfunction or Not Run. OK indicates that no circuit Malfunction are detected during the current test. | ||||||||||||||||
Ignition Coil 2 and 3 Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Ignition Coil 2 and 3 Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Ignition Coil 2 and 3 Control Circuit Open Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit faults are detected during the current test. | ||||||||||||||||
Ignition Cycles Since Last Completed Engine Maintenance Mode | - | Days | This parameter displays the elapsed time in days since the most recent completion of Engine Maintenance Mode. | ||||||||||||||||
Ignition Cycles Since Last Completed Fuel Maintenance Mode | - | Days | This parameter displays the elapsed time in days since the most recent completion of Fuel Maintenance Mode. | ||||||||||||||||
Ignition Cycles with Malfunction Since 1st Malfunction | Vehicle ON | Counts | This Parameter displays the number of ignition cycles with a malfunction reported since the first ignition cycle with a malfunction reported. | ||||||||||||||||
Ignition Cycles without Completed Test Since 1st Malfunction | - | Counts | This Parameter displays the number of ignition cycles without a malfunction reported since the first ignition cycle. | ||||||||||||||||
Ignition Cycles without Malfunction Since Last Malfunction | Vehicle ON | Counts | This Parameter displays the number of ignition cycles with a pass reported and no malfunctions reported since the first ignition cycle with a malfunction reported. | ||||||||||||||||
Ignition Timing | - | -4 to +15 Degrees | This parameter displays the amount of spark advance the control module is commanding. The engine control module determines the desired advance. | ||||||||||||||||
Ignition Timing | - | Degrees | This parameter displays the final spark advance in terms of a crankshaft angle | ||||||||||||||||
Immobiliser Password Learn | - | Yes | This parameter displays Yes when a valid theft password has been learned. | ||||||||||||||||
Immobiliser Security Information Programmed | - | Yes | This parameter displays if the immobilizer system security code has been programmed. | ||||||||||||||||
Immobiliser System Status | - | Varies | This parameter displays the current state of the immobiliser System Status. The states include the following: Standby, Disabled at Startup, Disabled Due to No Response, Disabled Due to Negative Response, Disabled Due to Incorrect Response, Post Release, Pre-Release, Released. | ||||||||||||||||
Injector Duty Cycle | - | 1.5-3 ms | This parameter displays the average pulse width of the fuel injectors as determined by the control module. | ||||||||||||||||
Intake Camshaft Position Active Counter | - | 0-255 Counts | This parameter displays an incrementing counter when the control module receives a signal from the intake camshaft position sensor. | ||||||||||||||||
Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the intake camshaft position actuator solenoid valve control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is shorted to voltage. | ||||||||||||||||
Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the intake camshaft position actuator solenoid valve control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is shorted to ground. | ||||||||||||||||
Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status | - | OK | This parameter displays the state of the intake camshaft position actuator solenoid valve control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is open. | ||||||||||||||||
Intake Camshaft Position Variance | - | Degrees | This parameter displays in degrees, the difference between the desired intake camshaft position and the actual intake camshaft position. | ||||||||||||||||
Intake Manifold Pressure | - | 32-53 kPa (4.6-7.6 PSI) | This parameter displays the pressure difference between the Manifold Absolute Pressure (MAP) and the barometric pressure (BARO) as calculated by the control module. | ||||||||||||||||
Knock Retard | - | 0° | This parameter displays the amount of spark advance the control module removes from the ignition control spark advance in response to the signal from the knock sensors. | ||||||||||||||||
Last Engine Maintenance Mode | - | Incomplete | This parameter displays the status of the Last Engine Maintenance Mode. | ||||||||||||||||
Long Term Fuel Trim | - | -10 to +10 % | The scan tool range is -99 to +99 %. This parameter indicates the Long Term fuel trim correction as commanded by the ECM. A change made to the fuel delivery will be indicated by the Long and Short Term values. The Short Term values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The Long Term values change in response to the changes in the Short Term. The Long Term makes coarse adjustments to the fueling in order to recenter and restore control to the Short Term. The Short Term and the Long Term can be monitored with a scan tool. A positive fuel trim value indicates that the ECM is adding fuel in order to compensate for a lean condition. A negative fuel trim value indicates that the ECM is reducing the amount of fuel in order to compensate for a rich condition. | ||||||||||||||||
Long Term Fuel Trim Test Average | - | 0.98 % Varies | This parameter is the average long term fuel trim for this bank as calculated by the control module. The scan tool will display a value more than 0 % indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0, indicating time is being subtracted from the injector pulse width, reducing the amount of fuel to this bank of the engine. A value of 0 % indicates no compensation is required to operate the engine at the desired air/fuel ratio. | ||||||||||||||||
Long Term Fuel Trim Test Average without Purge | - | 1.02 % Varies | This parameter is calculated by the control module based on the Short Term Fuel Trim value. The Long Term Fuel Trim is used for the long term correction of the fuel delivery. The scan tool will display a high value for a large amount of long term fuel correction, and 0 % for no long term fuel trim correction. The scan tool will display a negative value when fuel system is running too rich and fuel is being removed from the combustion event. The scan tool will display a positive value if the fuel system is running lean and fuel is being added to the combustion event. | ||||||||||||||||
Low Voltage Battery Discharge Current | - | No | This parameter displays the state of the 12 V Low Voltage Battery Discharge. | ||||||||||||||||
MAF Performance Test | - | OK | This parameter displays the status of the mass air flow (MAF) performance test by the control module. The scan tool will display OK if no condition is detected. The scan tool will display Malfunction if the control module detects a condition during the test. | ||||||||||||||||
MAF Sensor | Engine Idling | 1.7-3.7 g/s | This parameter indicates the quantity calculated by the control module based on a signal from the MAF sensor. The scan tool will display a high value at high engine speeds, and a low value at low engine speeds. | ||||||||||||||||
Engine speed at 2 500 RPM | 5.5-7.5 g/s | ||||||||||||||||||
MAF Sensor | - | 1 700-2 100 Hz | This parameter indicates the frequency signal received from the MAF sensor by the control module. The scan tool will display a high value at high engine speeds, and a low value at low engine speeds. | ||||||||||||||||
MAF Sensor Supply Voltage Command | - | ON | This parameter displays the commanded state of the MAF sensor supply voltage output. | ||||||||||||||||
MAF Sensor Supply Voltage Control Circuit High Voltage Test Status | - | OK or Not Run | This parameter displays the status of the Supply Voltage Control circuit for the MAF Sensor. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
MAF Sensor Supply Voltage Control Circuit Low Voltage Test Status | - | OK or Not Run | This parameter displays the status of the Supply Voltage Control circuit for the MAF Sensor. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
MAF Sensor Supply Voltage Control Circuit Open Test Status | - | OK or Not Run | This parameter displays the status of the Supply Voltage Control circuit for the MAF Sensor. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
MAF When Engine Overspeed Detected | - | g/s | This parameter displays the intake mass airflow observed upon initial detection of an overspeed condition. This value will be updated upon each subsequent overspeed condition. | ||||||||||||||||
Maintenance Mode Disabled Low Fuel Level | - | No | This parameter displays Maintenance Mode Disabled Due to Low Fuel Level. The scan tool displays Yes or No. | ||||||||||||||||
Maintenance Mode Status | - | Varies | This parameter displays the current status of the Maintenance Mode. | ||||||||||||||||
MAP Performance Test 1 | - | OK | This parameter displays the status of the MAP performance test 1 by the engine control module. The scan tool will display OK if no malfunction is found. The scan tool will display malfunction if the engine control module detects a malfunction during the test. | ||||||||||||||||
MAP Performance Test 2 | - | OK | This parameter displays the status of the MAP performance test 2 by the engine control module. The scan tool will display OK if no malfunction is found. The scan tool will display malfunction if the engine control module detects a malfunction during the test. | ||||||||||||||||
MAP Sensor | - | 26-52 kPa (3.7-7.6 PSI) | This parameter displays the pressure from the MAP sensor to the engine control module. | ||||||||||||||||
MAP Sensor | - | 0.98-1.42 V | This parameter displays the signal voltage from the MAP sensor to the engine control module. | ||||||||||||||||
Maximum Engine Speed When Engine Overspeed Detected | - | RPM | This parameter displays the maximum engine speed observed during all overspeed condition and stores this information in the engine control module. | ||||||||||||||||
MIL Command | Vehicle ON | ON/OFF | This parameter displays the commanded state of the malfunction indicator lamp (MIL) control circuit by the engine control module (ECM). | ||||||||||||||||
MIL Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the control circuit for the malfunction indicator lamp control (MIL). The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
MIL Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the control circuit for the malfunction indicator lamp control (MIL). The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
MIL Control Circuit Open Test Status | - | OK | This parameter displays the status of the control circuit for the malfunction indicator lamp control (MIL). The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
MIL Requested | Vehicle ON | Yes/No | This parameter displays the reason the engine control module illuminated the MIL. The scan tool will display Yes when the MIL is requested as a result of an A or B type DTC. The scan tool will display No if the MIL is illuminated for another reason, such as transmission DTCs. | ||||||||||||||||
MIL Requested by DTC | - | No | This parameter indicates the reason the control module illuminated the MIL. The scan tool will display Yes when the MIL is requested as a result of an A or B type DTC. The scan tool will display No if the MIL is illuminated for another reason, such as transmission DTCs. | ||||||||||||||||
Misfire Monitor Complete | - | No | This parameter displays the status of the Misfire Monitor. The parameter will display Yes when the Misfire Monitor is Complete. | ||||||||||||||||
Misfire Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||||||
Misfire Monitor Enabled | - | Yes/No | This parameter displays the status of the Misfire Monitor. The parameter will display Yes when the Misfire Monitor is Enabled. | ||||||||||||||||
Misfire Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||||||
Not in Run Mode | - | No | This parameter displays Yes or No if the Run/Crank mode is not active. | ||||||||||||||||
Number of DTC(s) | - | 0 | This parameter indicates the number of diagnostic trouble codes (DTCs). | ||||||||||||||||
O2S/HO2S Monitor Complete | Engine Idling | Yes/No | This Parameter displays the enable and completion status during the current driving/monitoring cycle of each continuous legislated emission related monitor and non continuous legislated emission related monitor. | ||||||||||||||||
O2S/HO2S Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||||||
O2S/HO2S Monitor Enabled | Engine Idling | Yes/No | This Parameter displays the enable and completion status during the current driving/monitoring cycle of each continuous legislated emission related monitor and non continuous legislated emission related monitor. | ||||||||||||||||
O2S/HO2S Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||||||
Odometer When Engine Overspeed Detected | - | km/miles | This parameter displays the vehicle odometer reading in km/miles upon initial detection of an overspeed condition by the engine control module. | ||||||||||||||||
Output Shaft Speed Sensor | Vehicle needs to be moving | RPM | This Parameter displays the transmission output speed (the speed at the output of the gear box) determined from the speed measured by the transmission output speed sensor. | ||||||||||||||||
Power Mode | Vehicle ON | OFF/Accessory/Run/Crank Request | This Parameter displays the state of the System Power Mode. This signal is based upon the state of the system power mode received over serial communication from the vehicle electronics. If the serial data signal not received, the Parameter will display OFF. | ||||||||||||||||
Radiator Coolant Temperature Sensor | - | 88-105°C (190-221°F) | The temperature of the engine coolant based on a voltage input from the radiator coolant temperature (RCT) sensor to the engine control module. | ||||||||||||||||
RCT vs. IAT Sensor Temperature at Last ECT vs. RCT Malfunction Detection | - | Agree, Disagree, Disabled | RCT/IAT Sensors Disagree indicates that the temperature values of the RCT and IAT sensors did not agree at the time of the most recent failure of the ECT/RCT rationality diagnostic (DTC P00B6). | ||||||||||||||||
Reduced Engine Power | - | Inactive | This parameter displays the status of the operating mode of the control module used to reduce engine power to prevent catalyst converter or engine damage or due to a Throttle Actuator Control (TAC) system condition. | ||||||||||||||||
Reduced Engine Power History | - | OK | This parameter displays the last reason that ECM has Commanded Reduced Engine Power. The scan tool displays one of the following when Reduced Engine Power is commanded:
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Remaining Fuel in Tank | - | 0-100 % Varies | This parameter displays the amount of fuel remaining in the fuel tank as measured in percentage. The control module determines the amount of fuel remaining in the tank by using information from the fuel level sensors. The scan tool will display a higher value with a full fuel tank, and a lower value with an empty fuel tank. | ||||||||||||||||
Remaining Fuel in Tank | - | Litres (Gallons) Varies | This parameter displays the amount of fuel remaining in the fuel tank as measured in litres (gallons). The control module determines the amount of fuel remaining in the tank by using information from the fuel level sensor. The scan tool will display a higher value with a full fuel tank, and a lower value with an empty fuel tank. | ||||||||||||||||
Short Term Fuel Trim | - | -10 to +10 % | The Short Term values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The Long Term values change in response to the changes in the Short Term. The Long Term makes coarse adjustments to the fueling in order to recenter and restore control to the Short Term. The Short Term and the Long Term can be monitored with a scan tool. A positive fuel trim value indicates that the ECM is adding fuel in order to compensate for a lean condition. A negative fuel trim value indicates that the ECM is reducing the amount of fuel in order to compensate for a rich condition. | ||||||||||||||||
Short Term Fuel Trim Test Average | - | -3 to +99 % Varies | This parameter displays the short term closed loop fuel correction. This value is compared to predetermined thresholds to determine if the fuel trim diagnostic is passing or failing. | ||||||||||||||||
Starter Relay Command | - | OFF | The scan tool displays ON or OFF. The scan tool displays OFF until the ignition is placed into the CRANK position. | ||||||||||||||||
Starter Relay Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the control circuit for the starter relay. The scan tool displays OK, Malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
Starter Relay Control Circuit Low Voltage Test Status | - | Not Run | This parameter displays the status of the control circuit for the starter relay. The scan tool displays OK, Malfunctions, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
Starter Relay Control Circuit Open Test Status | - | OK | This parameter displays the status of the control circuit for the starter relay. The scan tool displays OK, malfunction, or Not Run. OK indicates that no circuit malfunctions are detected during the current test. | ||||||||||||||||
Start Up ECT | - | -39 to +140°C (-38 to +284°F) | This parameter displays the temperature of the engine coolant on start up based on input to the control module from the ECT sensor 1. | ||||||||||||||||
Start Up IAT | - | -39 to +140°C (-38 to +284°F) | This parameter displays the temperature of the intake air at start in the air induction system based on input to the control module from the IAT sensor. | ||||||||||||||||
SVS Indicator Command | - | OFF | This parameter displays that the Service Vehicle Soon lamp is being commanded on due to the malfunction of a non emission related diagnostic test. | ||||||||||||||||
TAC Forced Engine Shutdown | - | No | This parameter displays the status of TAC control by the control module. The scan tool will display Yes if the engine has been shut down due to a throttle control malfunction. The scan tool will display No if the engine has not been shut down by a throttle control malfunction. | ||||||||||||||||
TAC Motor | - | Disabled | This parameter displays the status of the TAC motor driver by the control module. The scan tool will display Enabled if TAC motor operation is allowed. The scan tool will display disabled if the TAC motor is disabled. | ||||||||||||||||
TAC Motor Command | - | 0-100 % Varies | This parameter displays the percentage of the commanded state of the TAC motor by the control module. | ||||||||||||||||
Throttle Body Idle Air Flow Compensation | - | 0-100 % Varies | This parameter displays the amount of airflow compensation in response to engine intake air flow restrictions. | ||||||||||||||||
Throttle Position | - | 2-9 % | This parameter displays the actual throttle position angle indicated by the control module using information from the two Throttle Body sensors. | ||||||||||||||||
Throttle Position Performance Test | - | OK | This parameter displays the status of the throttle position performance test by the control module. The scan tool will display OK if no malfunction is found. The scan tool will display Malfunction if the control module detects a malfunction during the test. | ||||||||||||||||
Throttle Position Sensor 1 | Accelerator pedal not actuated | 4.14-4.34 V | This parameter displays the voltage signal sent to the control module from throttle position sensor 1 of the throttle assembly. The throttle position sensor 1 is a range of values indicating a high voltage when the throttle is closed to a low voltage when the throttle plate is fully open. | ||||||||||||||||
Accelerator pedal fully actuated | 3.50-3.37 V | ||||||||||||||||||
Throttle Position Sensor 1 Learned Minimum | - | 0.5-0.71 V | This parameter displays the learned minimum voltage for throttle position sensor 1 as determined by the control module this ignition cycle. | ||||||||||||||||
Throttle Position Sensor 1 Position | - | 2-6 % | This parameter displays the angle of the throttle position sensor 1 as calculated by the control module using the signal from the throttle position sensor 1. The throttle position sensor 1 is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is fully open. | ||||||||||||||||
Throttle Position Sensor 2 | Accelerator pedal not actuated | 0.68-0.88 V | This parameter displays the voltage signal sent to the control module from throttle position sensor 2 of the throttle assembly. The throttle position sensor 2 is a range of values indicating a low voltage when the throttle is closed to a high voltage when the throttle plate is fully open. | ||||||||||||||||
Accelerator pedal fully actuated | 1.35-1.55 V | ||||||||||||||||||
Throttle Position Sensor 2 Learned Minimum | - | 0.55-0.75 V | This parameter displays the learned minimum voltage for throttle position sensor 2 as determined by the control module this ignition cycle. | ||||||||||||||||
Throttle Position Sensor 2 Position | - | 2-6 % | This parameter displays the angle of the throttle position sensor 2 as calculated by the control module using the signal from the throttle position sensor 2. The throttle position sensor 2 is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is fully open. | ||||||||||||||||
Throttle Position Sensors 1 and 2 | - | Agree | This parameter displays the results of a control module test that compares the signals from the Throttle Body sensors 1 and 2. The scan tool will display Agree or Disagree. Agree indicates that throttle position sensor 1 and throttle position sensor 2 voltages correspond to the same throttle position. Disagree indicates that throttle position sensor 1 and throttle position sensor 2 voltages correspond to different throttle positions. | ||||||||||||||||
Time Since Last Refuel Event | - | Days | This parameter displays the amount of time in the form of days since the most recent refuelling event. | ||||||||||||||||
Torque Management Ignition Timing Retard | - | 15-25 Degrees | This parameter displays how much the ignition spark timing is being retarded to control torque by the control module. The scan tool will display a higher value under extreme torque control conditions such as spinning wheels. The scan tool will display a lower value under low torque control conditions such as light driving. | ||||||||||||||||
Torque Request Inhibit - Fuel | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Torque Request Inhibit - Ignition Timing | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Torque Request Inhibit - Ignition Timing Advance | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Torque Request Inhibit - Minimum Idle | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Torque Request Inhibit - Minimum Torque | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Torque Request Inhibit - TAC | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Torque Request Inhibit - TAC Limit | Engine Idling | Yes/No | This Parameter displays the existing condition in the ECM causing the transmission torque request to be limited. | ||||||||||||||||
Total Knock Retard | - | 0° | This parameter displays how much ignition spark timing is being retarded due to all control systems monitored by the control module. The scan tool will display a high value during extreme conditions such as high temperatures and antilock braking. The scan tool will display a lower value during lighter driving conditions. | ||||||||||||||||
Vehicle Speed Sensor | - | 0 km/h (0 MPH) | This parameter displays the speed of the vehicle as calculated by the transmission control module (TCM) from information received from the vehicle speed sensor. | ||||||||||||||||
Vehicle Speed When Engine Overspeed Detected | - | km/MPH | This parameter displays the vehicle speed observed upon initial detection of an overspeed condition by the engine control module. | ||||||||||||||||
Warm-Ups Since DTC Cleared | - | Varies | This parameter displays the number of warm-ups since the DTC was cleared in counts. | ||||||||||||||||
Warm-Ups without Emission Malfunctions | - | Varies | This parameter displays the number of warm-up cycles that have occurred without an emission malfunction present. The scan tool will display a 0 if a malfunction has occurred. The scan tool will display a higher count if a number of warm-up cycles have occurred without an emission malfunction. | ||||||||||||||||
Warm-Ups without Non-Emission Malfunctions | - | Varies | This parameter displays the number of warm-up cycles that have occurred without a non-emission malfunction present. The scan tool will display a 0 if a malfunction has occurred. The scan tool will display a higher count if a number of warm-up cycles have occurred without a non-emission malfunction. | ||||||||||||||||
Wide Open Throttle | - | No | This parameter displays the throttle status commanded by the control module. The scan tool will display Yes if the vehicle throttle is commanded to wide open. The scan tool will display No if the vehicle throttle is commanded to an amount less than 100 %. | ||||||||||||||||
Output Control | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
A/C Compressor Clutch Relay | This device control is used to activate the Air Conditioning Compressor Clutch. | ||||||||||
Camshaft Position Actuator Solenoid Valve | This device control is used to override the state of the camshaft position actuator solenoid output. | ||||||||||
Crankshaft Position Variation Learn | This device control is used to activate the crankshaft position variation learn software which calculates the reference pulse correction factors for the misfire diagnostic. | ||||||||||
Cylinder Power Balance | This function disables the selected fuel injector. The normal commanded state is None. The scan tool initiates the test when the following conditions are met:
If the fuel injector is disabled after 30 s, fuel injector control is not allowed again on the same fuel injector for 60 s. | ||||||||||
Engine Speed | This function controls the idle speed override in 25 RPM, 100 RPM, and 500 RPM increments, from the base idle speed to 1 950 RPM. The scan tool initiates the test when the following conditions are met:
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EVAP Leak Detection Pump Command | This function turns the EVAP Leak Detection Pump ON and OFF. | ||||||||||
EVAP Leak Detection Pump Switching Valve Command | This device control is used to change the state of the canister vent control valve output from Not Venting or Venting. | ||||||||||
EVAP Purge Solenoid Valve | This function controls the EVAP purge solenoid valve. The normal commanded state is None. The system will increase or decrease the amount of purge by changing the duty cycle of the purge valve in 10 % increments within a range of 0-100 %. The scan tool initiates the test when the following conditions are met:
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EVAP Vent Solenoid Valve Command | This function controls the EVAP vent solenoid. The normal commanded state is None. When commanded ON, the vent valve switches to not venting. When commanded OFF, the vent valve switches to venting. The scan tool initiates the test when the following conditions are met:
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Fuel Control Loop Status | This device control is used to enable or disable closed loop fuel control. | ||||||||||
Fuel Filter Life Reset | This device control is used to reset the Fuel Life in the ECM after replacement. | ||||||||||
Fuel Injector Balance | This function enables the fuel injector in order to verify proper fuel injector flow. The ECM will pulse the selected injector when the following conditions are met:
The selected fuel injector can only be flowed or pulsed once per ignition cycle. | ||||||||||
Fuel Pump Enable | This function controls the fuel pump. The normal commanded state is NONE. The scan tool initiates the test when the following conditions are met:
When commanded ON/OFF, the engine control module (ECM) turns the fuel pump module ON/OFF. If the engine is running and the fuel pump is commanded OFF, the engine will stall. The system remains in the commanded state for about 2 seconds or until cancelled by the scan tool or the ECM detects a vehicle speed. | ||||||||||
Fuel Trim Enable | This function enables or disables the ECM fuel trim learning. The normal commanded state is None. | ||||||||||
Fuel Trim Reset | This function is used to reset the learned fuel trim values to their initial values. | ||||||||||
HO2S Heater Learn | This function is used to trigger the reset of the learned resistances for the oxygen sensor heaters following a replacement. The learned resistances are reset to a calibration used to prevent overheating of the sensors until more accurate resistances may be learned following an extended engine OFF time. | ||||||||||
HO2S Heater Sensor 1 or 2 | This function controls the selected HO2S heater. The normal commanded state is None, ON, and OFF. Commanding the HO2S heater ON turns on the heater driver. The scan tool initiates the test when the following conditions are met:
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HO2S Test | This device control is used to trigger a service bay procedure to execute the oxygen sensor response test following a sensor replacement in service. This procedure is required to set the oxygen sensor inspection and maintenance ready flag. | ||||||||||
Idle Ignition Timing | Disables and enables idle spark advance with the engine running. | ||||||||||
Ignition Timing Retard | This function is used to control the amount of spark retard. The normal commanded state is None. The system will increase or decrease the amount of spark retard by 1° increments within a range of 0-10° maximum retard. The system remains in the commanded state until cancelled by the tool. | ||||||||||
MAF Sensor Supply Voltage Low Side Driver Command | This device control is used to override the state of the mass air flow sensor supply voltage output. Engine must be running. | ||||||||||
Malfunction Indicator Lamp (MIL) | This function controls the malfunction indicator lamp (MIL). The normal commanded state is None. When commanded ON or OFF, the ECM turns the malfunction indicator lamp (MIL) ON or OFF. This output can also be monitored on the scan tool data parameter MIL Command. The system remains in the commanded state until cancelled by the scan tool. | ||||||||||
Misfire Graphic | This function is used to graph the accumulated misfires occurring in each cylinder. The scan tool allows for a reset of the misfire graph. | ||||||||||
Programming History | This function displays the history buffer entries for the primary calibration part in the engine controller. | ||||||||||
Throttle Position | This function controls the throttle valve in 10 % increments. The scan tool initiates the test when the following conditions are met:
The system remains in the commanded state until cancelled by the scan tool. | ||||||||||
Throttle Sweep | This function moves the Throttle plate slowly from a closed position to wide open position, aiding diagnosis of TAC motor. |
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