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| Table 1: | Engine Control Module Scan Tool Data Parameters |
| Table 2: | Engine Control Module 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 Trouble Code (DTC) List - 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 would 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 the 2.4L engine for diagnosis.
Parameter | System State | Expected Value | Description |
|---|---|---|---|
Base Operating Conditions: Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off/Brake Pedal Released | |||
5 V Reference 1 | - | 5.0 V | This parameter displays the voltage sensed on the 5 V reference 1 circuit 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 Circuit Status | - | OK | This parameter will display OK if the circuit is good, or Fault if a short to ground, short to B+, or open circuit is present. |
5 V Reference 2 | - | 5.0 V | This parameter displays the voltage sensed on the 5 V reference 2 circuit 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 2 Circuit Status | - | OK | This parameter will display OK if the circuit is good, or Fault if a short to ground, short to B+, or open circuit is present. |
Accelerator Pedal Position | Accelerator pedal not actuated | 0 % | This parameter displays the angle, in percent, of the accelerator pedal as calculated by the control module using the signals from the accelerator pedal position sensors. The accelerator pedal position (APP) indicated angle 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 % | ||
Accelerator Pedal Position | - | 0-100 % | This parameter displays the angle of the accelerator pedal position (APP) as calculated by the control module using the signals from the APP sensors. |
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 | OK | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. It can display OK, Malfunction or Not Run. The parameter displays Malfunction if the A/C clutch relay control circuit is shorted to voltage. |
A/C Compressor Clutch Relay Control Circuit Low Voltage Test Status | A/C ON | OK | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. It can display OK, Malfunction or Not Run. The parameter displays Malfunction if the A/C clutch relay control circuit is shorted to ground. |
A/C Compressor Clutch Relay Control Circuit Open Test Status | A/C ON | OK | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. It can display OK, Malfunction or Not Run. The parameter displays Malfunction if the A/C clutch relay control circuit is opened. |
A/C Disengage 1-8 History | - | Varies | This parameter indicates the reason the A/C compressor was disengaged. The reasons displayed are: None, A/C Pressure, Eng Spd, Batt Voltage, Stall Prevention, RPM Unstable, WOT, Launch Perf, Coolant Hot. |
A/C High Side Pressure | - | 1.43 V Varies | The scan tool displays 0-5 V. This is the output of the A/C refrigerant pressure sensor. |
A/C ON | 2.39 V Varies | ||
A/C High Side Pressure | - | 868 kPa / 125 psi Varies | The scan tool displays -103 to +3,119 kPa (-14 to +452 psi). This is the A/C refrigerant pressure sensor voltage signal converted to pressure. |
A/C ON | 1568 kPa / 227 psi Varies | ||
A/C OFF for WOT | - | No | This parameter indicates if the A/C system was commanded OFF for a wide open throttle event. |
A/C Pressure Disable | - | No | The scan tool displays Yes or No. Yes is displayed when the system pressure exceeds 3,034 kPa (440 psi). |
A/C Relay Request Signal | - | No | The scan tool displays Yes or No. Yes is displayed when the HVAC control module is requesting A/C operation. |
With A/C Selected | Yes | ||
Air/Fuel Equivalence Ratio Command | - | Varies:1 | This parameter should display 1.0 when in Closed Loop fuel control. |
Ambient Air Temperature | - | Varies | Outside temperature at any given altitude expressed in degrees centigrade (°C) and Fahrenheit (°F). |
APP Sensor 1 | Accelerator pedal not actuated | 1.04 V | This parameter displays the voltage signal sent to the control module from APP sensor 1 of the APP sensor assembly. APP sensor 1 is a range of values indicating a low voltage when the accelerator pedal is not depressed to a high voltage when the accelerator pedal is fully depressed. |
Accelerator pedal fully actuated | 4.27 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 Position | Accelerator pedal not actuated | 0 % | This parameter displays the position 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 | 0.47 V | This parameter displays the voltage signal sent to the control module from APP sensor 2 of the APP sensor assembly. APP sensor 2 is a range of values indicating a low voltage when the accelerator pedal is not depressed to a high voltage when the accelerator pedal is fully depressed. |
Accelerator pedal fully actuated | 2.10 V | ||
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 accelerator pedal position (APP) sensors as calculated by the throttle actuator control (TAC) module. The APP average is a range of values indicating a low number when the accelerator pedal is not depressed to a high number when the accelerator pedal is fully depressed. This value is listed in percent. |
BARO | - | 60-104 kPa (varies with altitude) | This parameter displays the barometric pressure as calculated by the control module using the signal from the manifold absolute pressure (MAP) sensor measured when the ignition is turned ON with the engine not running. The control module will update the barometric pressure during wide-open throttle (WOT) conditions. |
Brake Pedal Position Circuit Signal | - | Released | The scan tool displays Applied or Released. This parameter shows the position of the brake pedal position sensor through the stop lamp switch signal circuit. |
Brake pedal depressed | Applied | ||
Brake Pedal Position Signal | - | Released | The scan tool displays Applied, Released, or Invalid. This parameter shows the position of the brake pedal position sensor through the serial data bus. |
Brake pedal depressed | Applied | ||
Calculated Air Flow | - | G/S | This parameter contains the mass airflow determined from the speed density (MAP based) calculation of air mass per cylinder. |
Calculated Catalyst Temperature | - | 446°C / 834°F Varies | Calculated catalytic converter temperature. |
Calculated Engine Oil Temperature | - | 109°C (228°F) | This parameter displays the engine oil temperature. |
Camshaft Position Sensor | - | Same as Engine Speed | This parameter displays the speed of the engine as calculated by the signal from the camshaft position sensor. |
Catalyst Monitor Complete This Ignition Cycle | - | Varies | This parameter displays the completion status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No |
Catalyst Monitor Enabled This Ignition Cycle | - | Varies | This parameter displays the enable status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No. |
Catalyst Monitor Not At Idle Test Conditions Met | - | Yes/No | This parameter indicates the status of the catalyst monitor diagnostic. Catalyst Monitor Test Running indicates Yes or No when the catalyst monitor diagnostic is actively running a test |
Catalyst Monitor Test Counter | - | Counts | This parameter contains the number of repeated results 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 | - | No Result/Failed/Passed | This parameter indicates the status of the catalyst monitor diagnostic. Multiple tests may run before the diagnostic reports a Pass or Fail, and will be tracked by Catalyst Monitor Diagnostic Test Counter. When this parameter reports a Pass or Fail, the diagnostic is complete for the current trip and will not attempt any further tests. |
Catalyst Monitor Test State | - | Active/Inactive | This parameter indicates the status of the catalyst monitor diagnostic by displaying active or inactive. This test will only run with the engine at idle. |
Change Engine Oil Indicator Command | - | OFF | The scan tool displays ON or OFF. This is the state of the Change Engine Oil indicator as commanded by the ECM. |
Clutch Pedal Switch (If equipped) | - | Released | This parameter displays the current state of the clutch pedal as determined by the control module. |
Cold Startup | - | 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 Relay 1 Command | - | ON/OFF | This parameter displays the commanded state of the fan relay 1 control circuit. The cooling fan relay 1 should be ON when the scan tool indicates the FC Relay 1 command is ON. The cooling fan relay 1 should be OFF when the scan tool indicates the FC Relay 1 command is OFF. |
Cooling Fan Relay 1 Control Circuit High Voltage Test Status | - | OK/Fault/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is shorted to voltage. |
Cooling Fan Relay 1 Control Circuit Low Voltage Test Status | - | OK/Fault/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is shorted to ground. |
Cooling Fan Relay 1 Control Circuit Open Test Status | - | OK/Fault/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is open. |
Cooling Fan Relays 2 and 3 Command | - | ON/OFF | This parameter displays the commanded state of the fan relay 2 output. |
Cooling Fan Relays 2 and 3 Control Circuit High Voltage Test Status | - | OK/Fault/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is shorted to voltage. |
Cooling Fan Relays 2 and 3 Control Circuit Low Voltage Test Status | - | OK/Fault/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is shorted to ground. |
Cooling Fan Relays 2 and 3 Control Circuit Open Test Status | - | OK/Fault/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is open. |
Crank Request Signal | - | No | This parameter shows the power mode status of the starter motor. When Yes is displayed, a request to engage the starter has been received by the ECM. |
Ignition switch in the crank position | Yes | ||
Crankshaft Position Active Counter | - | 0-255 Counts incrementing | This parameter displays an incrementing counter when the control module receives a signal from the crankshaft position sensor. |
Crankshaft Position Resync Counter | - | 0 Counts | This parameter displays the number of times the control module has to resynchronise the crankshaft position sensor. |
Crankshaft Position Sensor | - | Same as Engine Speed | This parameter displays the engine speed as calculated by the control module using the signal from the crankshaft position sensor. |
Cruise Control | - | Inactive | This parameter displays the status of the cruise control system as determined by the control module. The scan tool will display Active when the cruise control system is in control of vehicle speed. The scan tool will display Inactive when the cruise control system is not operating. |
Cruise Control Cancel Switch | Cruise ON | Active/Inactive/Invalid | This parameter displays the status of the cruise control cancel switch. |
Cruise Control ON/OFF Switch | - | OFF | The scan tool displays ON or OFF. This is the state of the switch as monitored by the body control module (BCM). |
Switch pressed | ON | ||
Cruise Control Resume/Acceleration Switch | - | Inactive | The scan tool displays Active or Inactive. This is the state of the switch as monitored by the body control module (BCM). |
Switch pressed | Active | ||
Cruise Control Set/Coast Switch | - | Inactive | The scan tool displays Active or Inactive. This is the state of the switch as monitored by the body control module (BCM). |
Switch pressed | Active | ||
Cruise Disengage 1-8 History | - | Varies | These parameters indicate the last 8 reasons the ECM disengaged the cruise control. Reason 1 contains the most recent reason. The reasons include the following: Brake Pedal Initialise, Cancel, Clutch, Coast Disengage, Coast Speed Low, TAC Inhibit, Accel Rate, Decel Rate, High Speed, Illegal Mode, Low Speed, None, Cruise Sw OFF, Over Set Speed, S/C ON Speed Hi, ECM Inhibit, Simul S/C-R/A, TCS, Under Set Speed, DLC Override, Memory DTC, Eng Run Time, Engine Speed, DTC Set, RPM Limit, First Gear, APP Override, Low Voltage, D Whl Spd Low, D Whl Spd Hi, Cruise S/S, Cruise Sw Data, ECT Overtemp, VSES, Trans. DTC, BPP Data, BPP DTC, Park Brake, ACC Inhibit, ACC Brake DTC, ACC Option, ACC Brake Inop, PTO Active. |
Cycles of Misfire Data | - | 0-100 Counts incrementing | This parameter displays the number of cylinder firing events that were recorded as misfires as determined by the control module. |
Cylinder 1-4 Current Misfire Counter | - | Counts | The scan tool displays a range of 0--255 counts. This parameter displays the number of misfires that have been detected during the last 255 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 | - | Counts | The scan tool displays a range of 0-65,535 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 255 cylinder firing events. |
Cylinder 1-4 Injector Control Circuit High Voltage Test Status | - | OK/Fault/Not Run | This parameter displays the state of the Ignition control circuit. The parameter displays Malfunction if the Ignition control circuit is shorted to voltage. |
Cylinder 1-4 Injector Control Circuit Low Voltage Test Status | - | OK/Fault/Not Run | This parameter displays the state of the Ignition control circuit. The parameter display Malfunction if the Ignition control circuit is shorted to ground. |
Cylinder 1-4 Injector Control Circuit Open Test Status | - | OK/Fault/Not Run | This parameter displays the state of the Ignition control circuit. The parameter displays Malfunction if the Ignition control circuit is open. |
Cylinder 1-4 Injector Disabled- Misfire detected | - | Yes/No | This parameter displays the injector that has been disabled by the misfire catalyst converter protection calibration. |
Cylinder 1-4 Knock Detected | - | Yes/No | This parameter displays yes if a knock has been detected in an individual cylinder. |
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 Idle Speed | - | 768 RPM | This parameter displays the engine idle speed in RPM commanded by the control module. The control module compensates for various engine loads in order to maintain the desired engine RPM at idle. This parameter is not valid unless the engine is running. |
Desired Intake Camshaft Position | - | 0 Degrees | This parameter displays the desired intake camshaft position, as determined by the control module. The scan tool will display a higher value for more advanced intake valve timing, such as at high load or speed conditions. The scan tool will display a lower value for a less advanced intake valve timing, such as at idle. |
Desired Throttle Position | - | 0 % | The scan tool displays %. The scan tool displays 0-100 %. The ECM indicates the desired throttle angle commanded by the vehicle operator. The scan tool indicates the desired throttle angle commanded by the vehicle operator. |
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 | - | Varies | This parameter displays the distance accumulated since an emission diagnostic trouble code first failure. The scan tool will display increasing distance as the vehicle is driven. |
Distance Since Last Malfunction | - | km/miles | This parameter displays the mileage that has elapsed since the last emission failure. |
Drag Control Status | Vehicle Moving | Active/Inactive | EDC Active (Drag Active) control mode is indicated when the requested torque signal is above the driver requested value while the traction control system signal input is active. |
Drop Throttle Detected while Traction Control Active | - | No | Drop Throttle Control Mode is indicated when this parameter displays Yes. |
Drop Throttle Status | - | Inactive | Drop Throttle Control Mode is indicated when the Requested Torque Signal indicates greater than 90 % duty cycle while the Traction Control System Data Control Signal input is Active. |
ECM Authentication Status | - | 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 | ECM Challenge Valid indicates that the currently calculated ECM challenge is valid. |
ECM Response Source | - | Ignition Switch Start/Remote Vehicle Start/Exterior PTO Vehicle Start | ECM Response Source indicates the source used to calculate the ECM response. |
ECT Sensor | - | 96-103°C / 204-217°F | This parameter displays the temperature of the engine coolant based on the input from the engine coolant temperature sensor. When the coolant temperature is low, the scan tool will display a low temperature. When the coolant temperature is high, the scan tool will display a high temperature. |
EGR/Camshaft Position Monitor Complete This Ignition Cycle | - | Yes/No | This parameter displays Yes or No of the completion status during the current driving / monitoring cycle of emission related monitors. |
EGR/Camshaft Position Monitor Enabled This Ignition Cycle | - | Yes/No | This parameter displays Yes or No of the completion status during the current driving / monitoring cycle of emission related monitors. |
Electric Power Management Inhibit Reason | - | None/Control Function/Active/Fuel System/On-board Diagnostic System/Air Flow Measurement System/Cylinder Deactivation System/System Transmission Control Module | This parameter displays the reason for the source of the Regulated Voltage Control (RVC) override command. RVC lowers system operating voltage to reduce system electrical load and improve fuel economy performance. |
Engine Controls Ignition Relay Command | - | ON | This parameter displays the commanded state of the EC Ignition relay control circuit. The scan tool will display ON or OFF. ON indicates the EC ignition relay control circuit is being grounded by the control module, allowing voltage to other control module circuits and systems. OFF indicates the EC ignition relay is not being commanded on by the control module. |
Engine Controls Ignition Relay Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the Engine Control Ignition Relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
Engine Controls Ignition Relay Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the Engine Control Ignition Relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
Engine Controls Ignition Relay Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the Engine Control Ignition Relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
Engine Controls Ignition Relay Feedback Signal | - | 13.0-14.2 V | This parameter displays the voltage signal sent to the control module from the engine control ignition relay. The scan tool will display battery voltage when the engine is running. The scan tool will display no voltage when the relay is OFF. |
Engine Load | - | Varies | This parameter displays the engine load in percent based on inputs to the control module from various engine sensors. The scan tool will display a low percentage when the engine is at idle with little or no load. The scan tool will display a high percentage when the engine is running at a high RPM under a heavy load. |
Engine OFF Time | - | Varies | This parameter displays the time elapsed since the engine was shut OFF. |
Engine Oil Life Remaining | - | Varies | This parameter indicates the percentage of time left before an oil change is necessary according to the oil life monitor. |
Engine Oil Pressure Switch | - | OK | This parameter displays if the level of the engine oil is within range as determined by the control module from information received from the engine oil level switch. |
Engine Run Time | - | 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 | - | 750-800 RPM | This parameter displays the speed of the crankshaft as determined by the control module using an input from the crankshaft position sensor. The scan tool will display a high value at high engine speeds and a low value at low engine speeds. |
EVAP Purge Solenoid Valve Command | - | 10-15 % Varies | This parameter displays the on-time or duty cycle of the EVAP purge solenoid commanded by the control module expressed as a percent. The scan tool will display a high percentage when the control module is commanding the EVAP purge solenoid to be open a large amount. The scan tool will display a low percentage when the control module is commanding the EVAP purge solenoid to be open a small amount. The scan tool will display 0 when the control module is commanding the EVAP purge solenoid closed. |
EVAP Purge Solenoid Valve Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the fan EVAP Purge Solenoid control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
EVAP Purge Solenoid Valve Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the EVAP Purge Solenoid control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
EVAP Purge Solenoid Valve Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the EVAP Purge Solenoid control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
Exhaust Camshaft Position | - | 0 Degrees | This parameter displays the degrees of advanced exhaust camshaft angle related to crankshaft position as determined by the control module based on input from the exhaust camshaft position sensor. The scan tool will display a higher value for a more advanced exhaust camshaft position. The scan tool will display a lower value when the exhaust camshaft is not being advanced, such as at idle. |
Exhaust Camshaft Position Active Counter | - | 0 250 | This parameter displays an incrementing counter when the control module receives a signal from the exhaust camshaft position (CMP) sensor. |
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status | - | OK/Indeterminate | This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON. |
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status | - | OK/Indeterminate | This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is shorted to ground. The parameter displays Indeterminate until the circuit has been commanded ON. |
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status | - | OK/Indeterminate | This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open. The parameter displays Indeterminate until the circuit has been commanded ON. |
Exhaust Camshaft Position Command | - | 6 % | This parameter displays the exhaust camshaft position in percent of range as commanded by the control module. |
Exhaust Camshaft Position Variance | - | 0 Degrees | This parameter displays, in degrees, the difference between the desired exhaust camshaft position and the actual exhaust camshaft position. |
Fuel Control Loop Status | - | Open/Closed | Fuel Closed Loop Active indicates that the oxygen sensor is being used as feedback to adjust the amount of fuel delivered to the engine. |
Fuel Enrichment - Hot Coolant | - | Active/Inactive | Hot Coolant Enrichment Active indicates that the conditions to enable hot coolant enrichment are active and that a richer than stoichiometric air/fuel ratio is being commanded in order to help cool the engine when a system malfunction is causing the engine to run at extreme temperatures. |
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 level in the fuel tank. The scan tool will display a low reading when the fuel level in the tank is low or near empty. The scan tool will display a high reading when the fuel level in the tank is high or near full. |
Fuel Level Sensor Left Tank | - | 0-5 V | This parameter displays the voltage signal received by the control module from the secondary fuel level sensor in the left side of the fuel tank. |
Fuel Level Sensor Right Tank | - | 0-5 V | This parameter displays the voltage signal received by the control module from the primary fuel level sensor in the right side of the fuel tank. |
Fuel Pressure Sensor | - | kPa/psi | For Port Fuel Injected (PFI) systems, this parameter displays fuel rail pressure at the engine. For high pressure fuel systems, this parameter indicates the low side fuel pressure before the high pressure pump. |
Fuel Pump Enable Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the fuel pump control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Malfunction if there is an short to voltage in the circuit. |
Fuel Pump Enable Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the fuel pump control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Malfunction if there is an short to ground in the circuit. |
Fuel Pump Enable Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the fuel pump control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Malfunction if there is an open in the circuit. |
Fuel Pump Enable Command | - | ON | This parameter displays the commanded state of the fuel pump output (the output is considered to be commanded ON if its duty cycle is not zero). |
Fuel Pump Relay Command | - | ON | This parameter displays the commanded state of the fuel pump relay control circuit. The fuel pump relay should be ON when the scan tool indicates the Fuel Pump Relay Command is ON. The fuel pump relay should be OFF when the scan tool indicates the Fuel Pump Relay Command is OFF. |
Fuel Pump Relay Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the fuel pump relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
Fuel Pump Relay Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the fuel pump relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
Fuel Pump Relay Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the fuel pump relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
Fuel Tank Level Remaining | - | Varies | This parameter displays the amount of fuel remaining in the fuel tank as a percentage. The control module calculates this level using the signal from the sensor used to monitor the fuel level in the fuel tank. The scan tool will display a low reading when the fuel level in the tank is low or near empty. The scan tool will display a high reading when the fuel level in the tank is high or near full. |
Fuel Tank Rated Capacity | - | 64.2 Litres / 17 Gallons | 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 Tank Rated Capacity | - | Varies | This parameter displays the capacity of the fuel tank in liters or gallons. The rated capacity displayed by the scan tool varies with vehicle type. |
Fuel Trim Learn | - | Enabled | This parameter indicates if the control module is adjusting long term fuel trim in response to the short term fuel trim. The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled. |
Fuel Trim Memory Cell | - | 0 | 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 nearer to idle, and a higher value as conditions approach maximum engine speed and maximum load. |
Fuel Trim System Test State | - | Varies | This parameter indicates the status of the Fuel Trim System Test. The scan tool will display Disabled, Enabled, Monitoring, or Run Purge Test. |
Alternator L- Terminal Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the generator L-terminal control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
Alternator L- Terminal Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the generator L-terminal control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
Alternator L- Terminal Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the generator L-terminal control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
GEN F-Terminal Signal | - | 45 % Varies with electrical load | This parameter is an ECM input of the generator field duty cycle. This is an indication of generator load on the engine. |
GEN L-Terminal Command | - | 65 % Varies with electrical load | The scan tool displays 0-100 %. The scan tool displays the percentage of the output voltage of the alternator. |
GEN L-Terminal Signal Command | - | ON | This parameter indicates the generator commanded state by the ECM. |
HO2S 1 | - | 50-950 mV and Varying | The scan tool displays a range of 0-1,106 mV. The HO2S 1 parameter represents the exhaust oxygen sensor output voltage. The voltage fluctuates constantly within a range between 10 mV , and 1,000 mV, while operating in Closed Loop. |
HO2S 1 Heater | - | 0.76 Amps | This parameter displays the current through the control module when the HO2S heater is commanded ON by the control module. HO2S Heater Sen 1 is a range of values indicating a low current when the heater circuit resistance is high to a high current when the heater circuit resistance is low. |
HO2S 1 Heater Command | - | ON | This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display ON as the heater is commanded ON, and OFF if the heater is not commanded ON. |
HO2S 1 Heater Command | - | Varies | This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display a higher percentage as the heater command is increased, and a lower percentage if the heater is not commanded ON. |
HO2S 1 Heater Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the HO2S Heater control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
HO2S 1 Heater Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the HO2S Heater control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
HO2S 1 Heater Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the HO2S Heater control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
HO2S 2 | - | 50-850 mV and Varying | The scan tool displays a range of 0-1,106 mV. The HO2S bank 2 parameter represents the exhaust oxygen sensor output voltage. The voltage fluctuates constantly within a range between 10 mV and 1,000 mV, while operating in Closed Loop. |
HO2S 2 Heater | - | 0.76 Amps | This parameter displays the current through the control module when the HO2S heater is commanded ON by the control module. HO2S Heater Sen 2 is a range of values indicating a low current when the heater circuit resistance is high to a high current when the heater circuit resistance is low. |
HO2S 2 Heater Command | - | ON | This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display ON as the heater is commanded ON, and OFF if the heater is not commanded ON. |
HO2S 2 Heater Command | - | Varies | This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display a higher percentage as the heater command is increased, and a lower percentage if the heater is not commanded ON. |
HO2S 2 Heater Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the HO2S Heater control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
HO2S 2 Heater Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the HO2S Heater control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
HO2S 2 Heater Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the HO2S Heater control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
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 This Ignition Cycle | - | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. |
HOT Open Loop | - | Inactive | This parameter indicates 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 concern. The scan tool will display Inactive if the fuel system is operating normally. |
IAT Sensor | - | Varies | The scan tool displays °C/F. The ECM converts the resistance of the intake air temperature (IAT) sensor to degrees in the same manner as the engine coolant temperature (ECT) sensor. Intake air temp is used by the ECM to adjust fuel delivery and spark timing according to incoming air density. The scan tool displays a range of -39 to +140°C (-38 to +284°F). The ECM converts the resistance of the intake air temperature sensor to degrees. The ECM uses the IAT in order to adjust fuel delivery and spark timing according to incoming air density. |
Ignition 1 Signal | - | 13-14.2 V | This parameter displays the voltage measured at the ignition 1 circuit of the control module. Voltage is applied to the control module when the ignition switch is in the ignition 1 position. |
Ignition Accessory Signal | - | ON | This parameter displays the state of the ignition 0 input to the control module from the ignition switch. The scan tool will display ON when the ignition switch is in the ignition accessory position. The scan tool will display OFF when the ignition switch is in any other position. |
Ignition Coil 1-4 Control Circuit High Voltage Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The parameter displays Malfunction if the Ignition control circuit is shorted to voltage. |
Ignition Coil 1-4 Control Circuit Low Voltage Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The parameter display Malfunctions if the Ignition control circuit is shorted to ground. |
Ignition Coil 1-4 Control Circuit Open Test Status | - | OK | This parameter displays the state of the Ignition control circuit. The parameter displays if Malfunction the Ignition control circuit is open. |
Ignition Cycles with Malfunction Since 1st Malfunction | - | Counts | This parameter contains 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 contains the number of ignition cycles without a malfunction reported since the first ignition cycle with a malfunction reported. |
Ignition Cycles without Malfunctions Since Last Malfunction | - | Counts | This parameter contains the number of ignition cycles with a pass reported and no malfunctions reported since the first ignition cycle with a malfunction reported. |
Ignition Timing | - | ° | This parameter displays the final spark advance in terms of a crankshaft angle. |
Immobiliser Auto Learn Counter | - | Counts | This parameter displays the number of auto learn cycles that have been successfully completed within the immobiliser system. |
Immobiliser Automatic Learn Timer | - | h/m/s | This parameter displays the time elapsed within the current auto learn cycle within the immobiliser system. |
Immobiliser Password Learn | - | Enabled | Learning Enabled indicates that learning of immobiliser code information is enabled. |
Immobiliser Password Learn Scan Tool Delay | - | Active/Inactive | Scan tool Learn Delay Active indicates that the security code has been accepted but the scan tool learn delay is active and will not allow learning enabled, programming security code, or resetting security code. |
Immobiliser Security Code Accepted | - | Yes | Security Code Accepted displaying Yes indicates that the received security code is correct. |
Immobiliser Security Code Lockout | - | Inactive | Security Code Lockout Active indicates that the security code has not passed and lockout is active. |
Immobiliser Security Code Programmed | - | Yes/No | Security Code Programmed indicates that the security code has been programmed. |
Immobiliser Security Information Programmed | - | Yes/No | This parameter displays the status of the immobiliser system. |
Immobiliser System Status | - | Standby/Immobilised at Startup/Immobilised - No Response/Immobilised Negative Response/Immobilised - Incorrect Response/Post-Release State/Pre-Release State/Release State | This parameter displays the status of the immobiliser system. |
Injector Duty Cycle | - | 0.82-1.50 ms | This parameter displays the amount of fuel injector ON time or pulse width as commanded by the control module. |
Intake Camshaft Position | - | Degrees | This parameter displays the actual intake camshaft position in degrees. |
Intake Camshaft Position Active Counter | - | 0-255 | This parameter displays an incrementing counter when the control module receives a signal from the intake camshaft position (CMP) sensor. |
Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status | - | OK/Malfunction/Not Run | This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is shorted to voltage. The parameter displays OK until the circuit has been commanded ON. |
Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status | - | OK/Malfunction/Not Run | This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is shorted to ground. The parameter displays OK until the circuit has been commanded ON. |
Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status | - | OK/Malfunction/Not Run | This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Malfunction if the camshaft actuator solenoid control circuit is open. The parameter displays OK until the circuit has been commanded ON. |
Intake Camshaft Position Command | - | 6 % | This parameter displays the intake camshaft position in percent of range as commanded by the control module. |
Intake Camshaft Position Variance | - | 0 % | This parameter displays in degrees, the difference between the desired intake camshaft position and the actual intake camshaft position. |
Intake Manifold Pressure | - | Varies | This parameter displays the pressure difference between the MAP and the barometric pressure (BARO) as calculated by the control module. The scan tool will display a higher value during high vacuum conditions, such as idle or deceleration. The scan tool will display a lower value during low vacuum conditions, such as wide open throttle or high load cruising. |
Knock Retard | - | 0 Degrees | The scan tool displays °. Indicates the amount of spark the ECM is removing from ignition control (IC) spark advance in response to the signal from the knock sensors. The traction control system desired torque signal from the electronic brake and traction control module (EBTCM) may cause knock retard to display a value more than 0.0 degrees if traction control is active. |
Long Term Fuel Trim | - | 0 % | This parameter displays the commanded Long Term Fuel Trim correction by the control module for cruise and acceleration conditions. |
Long Term Fuel Trim Test Average | - | -10 to +10 % | The scan tool range is -99 to +99 %. This parameter indicates the Long Term fuel trim (FT) correction for bank 1 as commanded by the ECM. A change made to the fuel delivery will be indicated by the Long and Short Term FT values. The Short Term FT values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The Long Term FT values change in response to the trends in the Short Term FT. The Long Term FT makes coarse adjustments to the fueling in order to re-center and restore control to the Short Term FT. The Short Term FT and the Long Term FT 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 without Purge | - | 0 % | This parameter displays the filtered non-purge long term Closed Loop fuel correction. This value is compared to thresholds to determine if the fuel adjustment system diagnostic is passing, failing, or indeterminate during normal purge-OFF operation as well as during the intrusive excess purge vapour test. |
Low Engine Oil Pressure Indicator Command | - | OFF | The scan tool displays ON or OFF. This is the state of the low engine oil pressure indicator as monitored by the ECM. |
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 malfunction is found. The scan tool will display Malfunction if the control module detects a malfunction during the test. |
MAF Sensor | - | 3-6 g/s (varies with altitude) | The scan tool displays g/s. The scan tool displays a range of 0.0-655 g/s. The mass air flow (MAF) is the MAF input frequency converted to grams of air per second. This indicates the amount of air entering the engine. |
MAF Sensor | - | 1,200-1,300 Hz (varies with altitude) | The scan tool displays a range of 0-31,999 Hz. The MAF sensor is a hot wire type air flow sensor. The ECM converts current draw needed by the MAF to keep the hot wires at a constant into a frequency signal. The scan tool displays this frequency in a hertz signal. |
Malfunction Counter | - | Counts | This parameter contains the number of ignition cycles with a failure reported since the first ignition cycle with a failure reported. This parameter is only meaningful within the context of a failure record or freeze frame. |
MAP Performance Test 1 | - | OK | This parameter displays the status of the MAP performance test 1 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. |
MAP Performance Test 2 | - | OK | This parameter displays the status of the MAP performance test 2 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. |
MAP Sensor | - | 20-48 kPa (varies with altitude) | The scan tool displays kPa. The MAP sensor measures the change in the intake manifold pressure which results from engine load and speed changes. As the intake manifold pressure increases, the air density in the intake also increases and additional fuel is required. The scan tool displays a range of 10-105 kPa. The MAP sensor measures the absolute pressure in the intake manifold. |
MAP Sensor | - | 0.4-2.0 V (varies with altitude) | The scan tool displays V. The MAP sensor measures the change in the intake manifold pressure which results from engine load and speed changes. As the intake manifold pressure increases, the air density in the intake also increases and additional fuel is required. The scan tool displays a range of 10-105 kPa. The MAP sensor measures the absolute pressure in the intake manifold. |
MIL Command | - | OFF | This parameter displays the commanded state of the MIL control circuit. The malfunction indicator lamp should be ON when the scan tool indicates the MIL Command is ON. The malfunction indicator lamp should be OFF when the scan tool indicates the MIL Command is OFF. The control module will command the MIL ON when the ignition is ON with the engine OFF in order to perform a bulb check. |
MIL Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the malfunction indicator lamp control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Malfunction if there is a short to voltage on the circuit. |
MIL Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the malfunction indicator lamp control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Malfunction if there is a short to ground on the circuit. |
MIL Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the malfunction indicator lamp control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Malfunction if there is an open in the circuit. |
MIL Requested by DTC | - | No | This parameter shows if the illumination of the MIL has been requested by a failed diagnostic trouble code (DTC). |
Not Run Counter | - | Varies | This parameter contains the number of ignition cycles without a pass or a failure reported since the first ignition cycle with a failure reported. This parameter is only meaningful within the context of a failure record or freeze frame. |
O2S/HO2S Monitor Complete this Ignition Cycle | - | 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 enable and completion status during the current driving / monitoring cycle of each continuous legislated emission related monitor and non continuous legislated emission related monitor. |
Output Shaft Speed Sensor | - | 0 RPM | This parameter contains the Replicated Transmission Output Speed (Replicated TOS) received from the Transmission Control Module. Replicated TOS results from hardware in the TCM that re-transmits the Transmission Output Speed Sensor pulses to the ECM. |
Park/Neutral | - | Park/Neutral | The scan tool displays the position of the transmission selection as Park/Neutral or In Gear. |
Pass Counter | - | Varies | This parameter contains the number of ignition cycles with a pass reported and no failures reported since the first ignition cycle with a failure reported. This parameter is only meaningful within the context of a failure record or freeze frame. |
Power Enrichment | - | Inactive | Scan tool displays ACTIVE or INACTIVE. ACTIVE displayed indicates that the ECM has detected conditions appropriate to operate in Power Enrichment mode. The ECM will command Power Enrichment mode when a large increase in throttle position and load is detected. While in Power Enrichment, the ECM will increase the amount of fuel delivered by entering Open Loop and increasing the injector pulse width. This is done to prevent a possible sag or hesitation from occurring during acceleration. |
Reduced Engine Power | - | Inactive | The scan tool displays Active or Inactive. The scan tool displays Active when the ECM receives a signal from the TAC module that a throttle actuator control system fault is occurring. The ECM limits the engine power. |
Reduced Engine Power History | - | Throttle Malfunction/Cooling Fan Malfunction/Engine Over-temperature Protection Active | This parameter Displays the last reason that Powertrain has illuminated the Reduced Engine Power (REP) indication. |
Remaining Fuel in Tank | - | % | This parameter displays the total fuel level as a percentage of the rated capacity of the fuel tank. |
Remaining Fuel in Tank | - | Litres | This parameter displays the actual total fuel volume contained in the fuel tank. |
Short Term Fuel Trim | - | -10 to +10 % | The Short Term FT values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The Long Term FT values change in response to the trends in the Short Term FT. The Long Term FT makes coarse adjustments to the fueling in order to re-center and restore control to the Short Term FT. The Short Term FT and the Long Term FT 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 | - | 0.98-1.00 % | This parameter is calculated by the control module based on an intrusive test by the control module. The Short Term FT Test Average used for the short term correction of the fuel delivery. The scan tool will display a high value for a large amount of short term fuel correction, and 0 % for no short 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. |
Spark | - | 18-24 Degrees | The scan tool displays a range of -64 to +64°. The scan tool displays the amount of degrees the ECM commands. The ECM computes the desired spark advance using the following: (1) ECT, (2) engine speed (RPM), (3) load, (4) vehicle speed. The ECM adjusts the timing. A negative (-) value indicates degrees before top dead center (BTDC) or spark advance; a positive value indicates degrees after top dead center (ATDC) or spark retard. |
Starter Relay Command | - | OFF | The scan tool displays ON or OFF. This displays the commanded state of the starter relay by the ECM. |
Ignition switch in the crank position | ON | ||
Starter Relay Control Circuit High Voltage Test Status | - | OK | This parameter displays the status of the output driver for the starter relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit. |
Starter Relay Control Circuit Low Voltage Test Status | - | OK | This parameter displays the status of the output driver for the starter relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit. |
Starter Relay Control Circuit Open Test Status | - | OK | This parameter displays the status of the output driver for the starter relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit. |
Start-up ECT | - | Varies | Indicates the engine coolant temperature at engine start up. The scan tool displays a range of -39 to +140°C (-38 to +284°F). The scan tool displays the engine ECT at the time the engine was started. The ECM uses start-up ECT for certain DTCs. Indicates the engine coolant temperature at the time that the vehicle was started. Used to determine if the last startup was a cold start. |
Start-up IAT | - | Varies | Indicates the IAT at the time that the vehicle was started. Used to determine if the last startup was a cold start. The scan tool range is -39 to 140°C (-38 to 284°F). This parameter indicates the ambient air temperature at start-up. |
SVS Indicator Command | - | OFF | Service Engine System Non Emission Related Indication indicates that the Service Vehicle Soon lamp is being commanded ON due to the failure of a non emission related diagnostic test. |
TAC Forced Engine Shutdown | - | No | This parameter indicates 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 fault. The scan tool will display NO if the engine has not been shut down by a throttle control fault. |
TAC Motor | - | Enabled | This parameter indicates the status of the TAC motor driver by the ECM. 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 | - | 15-25 % | This parameter indicates the required duty cycle to maintain a desired throttle position. The scan tool will display a higher value if more effort is required to move the throttle to the desired position, such as physical resistance. The scan tool will display a lower value if less effort is required to move the throttle to the desired position. |
Throttle Body Idle Air Flow Compensation | - | % | This parameter displays the percent compensation of the Learned Airflow Variation Calibration. This value indicates the current amount of airflow compensation in response to engine inlet airflow restrictions. It can also be used as feedback for the Learned Airflow Adapts Reset Trigger Device Control. |
Throttle Position | - | 6 % | This parameter displays the angle of the TP in percent. This information is calculated by the control module using the signals from the throttle position sensors. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open. |
With Ignition ON, Engine OFF, Accelerator pedal not actuated | 29 % | ||
With Ignition ON, Engine OFF, Accelerator pedal fully actuated | 100 % | ||
Throttle Position Performance Test | - | OK | This parameter displays the status of the TP performance test by the control module. The scan tool will display OK if no fault is found. The scan tool will display Fault if the control module detects a fault during the test. |
Throttle Position Sensor 1 | - | 4.06 V | This parameter displays the voltage signal sent to the control module from the sensor used to monitor the position of the throttle plates. This parameter is for sensor 1 of the TP sensor assembly. The scan tool will display a high voltage when the throttle plates are at rest. The scan tool will display a low voltage when the throttle plates are fully open. |
With Ignition ON, Engine OFF, Accelerator pedal not actuated | 3.27 V | ||
With Ignition ON, Engine OFF, Accelerator pedal fully actuated | 0.80 V | ||
Throttle Position Sensor 1 Learned Minimum | - | 0.69 V | This parameter displays the learned minimum voltage for TP sensor 1 as determined by the control module this ignition cycle. |
Throttle Position Sensor 1 Position | - | 6 % | This parameter displays the angle of the TP sensor 1 in percent. This information is calculated by the control module using the signal from the throttle position sensor 1. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open. |
With Ignition ON, Engine OFF, Accelerator pedal not actuated | 29 % | ||
With Ignition ON, Engine OFF, Accelerator pedal fully actuated | 100 % | ||
Throttle Position Sensor 2 | - | 0.90 V | This parameter displays the voltage signal sent to the control module from the sensor used to monitor the position of the throttle plates. This parameter is for sensor 2 of the TP sensor assembly. The scan tool will display a low voltage when the throttle plates are at rest. The scan tool will display a high voltage when the throttle plates are fully open. |
With Ignition ON, Engine OFF, Accelerator pedal not actuated | 1.69 V | ||
With Ignition ON, Engine OFF, Accelerator pedal fully actuated | 4.16 V | ||
Throttle Position Sensor 2 Indicated Position | - | 6 % | This parameter displays the angle of the TP sensor 2 in percent. This information is calculated by the control module using the signal from the throttle position sensor 2. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open. |
With Ignition ON, Engine OFF, Accelerator pedal not actuated | 28 % | ||
With Ignition ON, Engine OFF, Accelerator pedal fully actuated | 100 % | ||
Throttle Position Sensor 2 Learned Minimum | - | 0.69 V | This parameter displays the learned minimum voltage for TP sensor 2 as determined by the control module this ignition cycle. |
Throttle Position Sensors 1 and 2 | - | Agree | This parameter displays the results of a control module test that compares the signals from the TP sensors 1 and 2. The scan tool will display Agree when the signal from TP sensor 1 corresponds with the signal from TP sensor 2. The scan tool will display Disagree when the signal from TP sensor 1 conflicts with the signal from TP sensor 2. |
Torque Delivered Signal | - | 2-6 ft lbs | Represents the PWM signal which indicates the available torque the engine is delivering to the drive wheels. The EBTCM monitors the Traction Control Torque signal to ensure that the ECM is responding properly to the Traction Control Desired Torque signal. |
Torque Management Ignition Timing Retard | - | 0 % | This parameter indicates 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 | - | Yes/No | This parameter displays the existing condition in the ECM causing the transmission torque request to be limited. |
Torque Request Inhibit- Ignition Timing | - | 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 | - | Yes/No | This parameter displays the existing condition in the ECM causing the transmission torque request to be limited. |
Torque Request Inhibit- Minimum Idle | - | Yes/No | This parameter displays the existing condition in the ECM causing the transmission torque request to be limited. |
Torque Request Inhibit- Minimum Torque | - | Yes/No | This parameter displays the existing condition in the ECM causing the transmission torque request to be limited. |
Torque Request Inhibit- TAC | - | Yes/No | This parameter displays the existing condition in the ECM causing the transmission torque request to be limited. |
Torque Request Inhibit- TAC Limit | - | Yes/No | This parameter displays the existing condition in the ECM causing the transmission torque request to be limited. |
Total Knock Retard | - | 0 Degrees | This parameter indicates 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. |
Total Misfire | - | 0 Counts | The scan tool range is 0-255 counts. This parameter indicates 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 or DTC P0300 has become active. The misfire history counter will update every 200 cylinder firing events. |
Traction Control Status | - | Inactive | This parameter displays Active if the electronic brake and traction control module (EBTCM) is commanding traction control. |
Traction Control Torque Delivered Signal | - | % | Represents the PWM signal which indicates the available torque the engine is delivering to the drive wheels. The EBTCM monitors the Traction Control Torque signal to ensure that the ECM is responding properly to the Traction Control Desired Torque signal. |
Traction Control Torque Request Signal | - | 0% | Scan tool range 0-100 percent. Represents the PWM signal from the electronic brake and traction control module (EBTCM). The EBTCM reduces the Traction Control Desired Torque signal pulse width when a drive wheel slippage situation is detected. The ECM monitors the Traction Control Desired Torque signal and reduces drive wheel slippage as necessary by retarding spark timing, decreasing boost sol. PWM, or increasing air/fuel ratio. The ECM can also turn OFF up to three fuel injectors if the Traction Control Desired Torque signal indicates a large enough amount of drive wheel slippage. |
Vehicle Speed Sensor | - | 0 km/h/mph | The scan tool range is 0-200 km/h (0-125 mph). This parameter displays the vehicle speed. The ECM receives reference pulses from the vehicle speed sensor (VSS) and converts them into km/h and mph for display. |
Warm-ups Since DTC Cleared | - | Varies | The scan tool displays a range of 0-255. This parameter counts the number of warm up cycles since a DTC was cleared from memory. The scan tool displays counts. |
Warm-ups with out Emission Faults | - | 0 | The scan tool displays a range of 0-255. This parameter counts the number of warm up cycles without an emission fault present. The counter increments to 255 and rolls back to 0 unless a fault occurs. If a fault occurs, the counter reverts back to 0 until the fault is corrected. Clearing the information with a scan tool or a loss of power to the ECM also resets the counter to 0. The scan tool displays counts. This display indicates the number of warm-up cycles without a emission failure. |
Warm-ups with out Non-Emission Faults | - | 0 | The scan tool displays a range of 0-255. This parameter counts the number of warm up cycles without a non-emission fault present. The counter increments to 255 and rolls back to 0 unless a fault occurs. If a fault occurs, the counter reverts back to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0. |
Wide Open Throttle | - | No | This parameter indicates the throttle status commanded by the control module. The scan tool will display YES is 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 | Air Conditioning Compressor Clutch Enable; Air Conditioning Compressor Clutch ON | ||||||||
Camshaft Position Actuator Data System | Exhaust Cam Phase Solenoid Bank 1 Enable; Exhaust Cam Phase Solenoid ON | ||||||||
Clutch Pedal Position Learn | This device control is used to trigger the procedure to learn the clutch pedal fully applied position. | ||||||||
Compression Test | This device control is used to set up the internal combustion engine for a compression test. The fuel pump, fuel injectors, and spark are all disabled. The throttle is opened to a Wide Open Throttle (WOT) position. For conventional engine vehicles, the extended crank feature is not active, and for strong hybrid vehicles, the Hybrid Powertrain Control Module is configured to crank at the speed specified in the device control command. Engine cranking is completely controlled by the technician either through the ignition key or through a remote starter switch as applicable. The device control limits and rejects will apply normally upon entry to the device control. Once the device control is active, the limits will be monitored (to prevent unwanted starter operation, for example), but in the case of a limit exceeded or a tester disconnect, device control of the fuel and spark will not be released until the Power Mode switches to Accessory or OFF. This will prevent unexpected fuel and spark operation in the case of a device control abort. | ||||||||
Cooling Fan | Cooling Fan Speed Enable; Cooling Fan Speed | ||||||||
Cooling Fan Relay 1 | The scan tool displays a commanded state of OFF or ON. This allows you to communicate with the ECM and activate or deactivate the cooling fan 1 relay, manually turning both low speed fans ON and OFF. | ||||||||
Cooling Fan Relays 1, 2 and 3 | The scan tool displays a commanded state of OFF or ON. This allows you to activate or deactivate all of the cooling fan relays. Both cooling fans turn ON and OFF in high speed. | ||||||||
Cooling Fan Relays 2 and 3 | The scan tool displays a commanded state of OFF or ON. This allows you to activate or deactivate the cooling fan series/parallel relay and the cooling fan 2 relay. The RH cooling fan 2 turns ON and OFF in high speed. | ||||||||
Crankshaft Position Variation Learn | This output control is used to activate the crankshaft position variation learn (CASE) algorithm which calculates the reference pulse correction factors for the misfire diagnostic. | ||||||||
Cylinder Power Balance | Enables/disables a cylinder by turning OFF the fuel injector to the cylinder. The fuel injector is normally enabled. The control module disables the fuel injector when the following conditions are met:
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Engine Controls Ignition Relay | Activates the engine controls ignition relay. The commanded states include NONE, ON, and OFF. The normal commanded state is NONE. The system remains in the commanded state until cancelled by the tool. | ||||||||
Engine Oil Life Reset | This device control contains the engine oil remaining life determined from an algorithm based upon the effective engine revolutions and the distance driven since the last oil change. This device control may be used to reset the engine oil remaining life to 100 % after an oil change or to any other value when replacing a control module | ||||||||
Engine Speed | Activates the throttle activation control (TAC) system to change engine RPM. The normal commanded state is None. To enable the RPM control, all instruction on the scan tool must be completed. The system will increase or decrease the RPM within a range of 400-2,000 RPM. The set step value changes the RPM by increments of 25 RPM, 100 RPM, and 500 RPM. The system remains in the commanded state until cancelled by the scan tool. | ||||||||
EVAP Purge Solenoid Valve | Activates the purge solenoid in 10 % increments from 0 to 100 %. The device control will be aborted and inhibited if the fuel tank pressure (FTP) sensor exceeds -27 mm Hg (-14 in H2O). | ||||||||
Exhaust Camshaft Position Actuator | This function controls the exhaust camshaft position actuator. The normal commanded state is 0 degrees. The system will INCREASE or DECREASE the exhaust camshaft timing by changing the duty cycle of the actuator in 5-degree increments up to 50 degrees. This also affects Desired Exhaust Camshaft Position Angle. | ||||||||
Fuel Control Loop Status | Controls the system loop status. The commanded states include NONE, OPEN, or CLOSED. The normal commanded state is NONE. When commanded OPEN or CLOSED, the system remains in the commanded state until cancelled by the scan tool. | ||||||||
Fuel Injector Balance | 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:
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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:
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Fuel Trim Enable | Disables the ECMs ability to learn new fuel trim parameters. The commanded states are NONE, ENABLED, DISABLED. The normal commanded state is NONE. The system remains in the commanded state until cancelled by the scan tool. | ||||||||
Fuel Trim Reset | Activates the reset of fuel trim data in all fuel trim cells. | ||||||||
Generator L-Terminal | Generator L-Terminal Enable; Generator L-Terminal ON | ||||||||
HO2S Heater Learn | This output control is used to trigger the reset of the learned resistances for the oxygen sensor heaters following a replacement in service. 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, typically 12 or more hours. | ||||||||
HO2S Heater Sensor 1 | Commands the heated oxygen sensor (HO2S) heater from 0-100 % in 10 % increments. The normal state is NONE. The system remains in the commanded state until cancelled by the tool or the heaters exceed a maximum temperature. | ||||||||
HO2S Heater Sensor 2 | Commands the heated oxygen sensor (HO2S) heater from 0-100 % in 10 % increments. The normal state is NONE. The system remains in the commanded state until cancelled by the tool or the heaters exceed a maximum temperature. | ||||||||
Idle Ignition Timing | Enables or disables idle spark command. When commanded ON, the idle spark will be controlled to 13 degrees before top dead center. The normal commanded state is OFF. | ||||||||
Idle Learn | This output control is used to reset the learned airflow adaptive values to their initial values. | ||||||||
Ignition Timing Retard | Controls the amount of spark retard. The scan tool will command an increase or decrease in the amount of spark retard in 1 degree increments, within a range of 1-10 degrees. The normal commanded state is None. | ||||||||
Inlet Camshaft Position Actuator | This function controls the intake camshaft position actuator. The normal commanded state is 0 degrees. The system will INCREASE or DECREASE the intake camshaft timing by changing the duty cycle of the actuator in 5 degree increments up to 40 degrees. This also affects Desired Intake Camshaft Position Angle. | ||||||||
Intake Camshaft Position Actuator Solenoid Valve | Intake Cam Phase Solenoid Enable; Intake Cam Phase Solenoid ON | ||||||||
Malfunction Indicator Lamp (MIL) | Malfunction Indicator Lamp Enable; Malfunction Indicator Lamp ON | ||||||||
Misfire Graphics | Graphs 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. | ||||||||
Remote Vehicle Start Disable History Reset | This function clears the remote vehicle start (RVS) disable history. When RESET is selected the reason the control module did not allow RVS in the last 8 attempts is cleared. | ||||||||
Starter Relay | Starter Relay Enable Starter Relay ON | ||||||||
Throttle Position | Operates TAC motor in 10 % increments to open or close the throttle blade. The test operates during key ON, engine OFF. |
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