Service Manual2011 Aveo TROUBLE CODE DIAGNOSIS

Aveo

TROUBLE CODE DIAGNOSIS

Diagnostic Trouble Code (DTC) Type Definitions (G14D Engine)

Emissions Related DTCs

Action Taken When the DTC Sets - Type A

The Malfunction Indicator Lamp (MIL) will be illuminated as soon as the error occurs.
The ECM will record operating conditions at the time the diagnostic fails. The information will be stored in the freeze frame and failure records buffers.
A history DTC is stored.

Action Taken When the DTC Sets - Type B

The Malfunction Indicator Lamp (MIL) will be illuminated after 2 valid driving cycles.
The ECM will record operating conditions at the time the diagnostic fails. The information will be stored in the freeze frame and failure records buffers.
A history DTC is stored.

Action Taken When the DTC Sets - Type E

The Malfunction Indicator Lamp (MIL) will be illuminated after 3 valid driving cycles.
The ECM will record operating conditions at the time the diagnostic fails. The information will be stored in the freeze frame and failure records buffers.
A history DTC is stored.

Conditions for Clearing the MIL/DTC - Type A

The MIL will turn off after a consecutive driving cycle in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm-up cycles without a fault.
A history DTC will clear by using a scan tool.

Conditions for Clearing the MIL/DTC - Type B

The MIL will turn off after four consecutive driving cycles in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm up cycles without a fault.
DTC(s) can be cleared by using a scan tool.

Conditions for Clearing the MIL/DTC - Type E

The MIL will turn off after four consecutive driving cycles in which the diagnostic runs without a fault.
A history DTC will clear after 40 consecutive warm up cycles without a fault.
DTC(s) can be cleared by using a scan tool.

Non-Emissions Related DTCs

Action Taken When the DTC Sets - Type Cnl

The Malfunction Indicator Lamp (MIL) will not illuminate.
The ECM will record operating conditions at the time the diagnostic fails. The information will be stored in the freeze frame and failure records buffers.

Conditions for Clearing the DTC - Type Cnl

A history DTC will clear after 40 consecutive warm up cycles without a fault.
DTC(s) can be cleared by using a scan tool.

Conditions for Clearing the DTC - Type Z

This DTC is available in the control module software, but has been disabled, or turned OFF. In this case, the diagnostic does not run, no DTCs are stored, and the MIL does not illuminate.

Clearing Trouble Codes

Important : Do not clear DTCs unless directed to do so by the service information provided for each diagnostic procedure. When DTCs are cleared, the Freeze Frame and Failure Record data which may help diagnose an intermittent fault will also be erased from memory. If the fault that caused the DTC to be stored into memory has been corrected, the Diagnostic Executive will begin to count the ”warm–up” cycles with no further faults detected, the DTC will automatically be cleared from the engine control module (ECM) memory. To clear DTCs, use the diagnostic scan tool.

Notice : To prevent ECM damage, the key must be OFF when disconnecting or reconnecting the power to the ECM (for example battery cable, ECM pigtail connector, ECM fuse, jumper cables, etc.). When the ECM sets a Diagnostic Trouble Code (DTC), the Malfunction Indicator Lamp (MIL) lamp will be turned on only for type A, B and E but a DTC will be stored in the ECM’s memory for all types of DTC. The DTC will stay in the ECM’s memory until cleared by scan tool. DTCs should be cleared after repairs have been completed. Some diagnostic tables will tell you to clear the codes before using the chart. This allows the ECM to set the DTC while going through the chart, which will help to find the cause of the problem more quickly.

Diagnostic Trouble Codes

DTC	Description	Type	Illuminate MIL
P0012	Intake Camshaft Position (CMP) System Performance - Retarded	A	YES
P0015	Exhaust Camshaft Position (CMP) System Performance - Retarded	B	YES
P0016	Crankshaft Position (CKP) - Intake Camshaft Position (CMP) Correlation	A	YES
P0017	Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation	B	YES
P0026	Intake Valve Control Solenoid Control Performance	A	YES
P0027	Exhaust Valve Control Solenoid Control Performance	B	YES
P0068	Throttle Body Airflow Performance	A	YES
P0076	Intake Valve Control Solenoid Control Circuit Low Voltage	A	YES
P0077	Intake Valve Control Solenoid Control Circuit High Voltage	A	YES
P0079	Exhaust Valve Control Solenoid Control Circuit Low Voltage	B	YES
P0080	Exhaust Valve Control Solenoid Control Circuit High Voltage	A	YES
P0106	Manifold Absolute Pressure (MAP) Sensor Performance	E	YES
P0107	Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage	B	YES
P0108	Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage	B	YES
P0112	Intake Air Temperature (IAT) Sensor Circuit Low Voltage	E	YES
P0113	Intake Air Temperature (IAT) Sensor Circuit High Voltage	E	YES
P0117	Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage	B	YES
P0118	Engine Coolant Temperature (ECT) Sensor Circuit High Voltage	B	YES
P0122	Throttle Position (TP) Sensor 1 Circuit Low Voltage	B	YES
P0123	Throttle Position (TP) Sensor 1 Circuit High Voltage	B	YES
P0131	HO2S Circuit Low Voltage Sensor 1	B	YES
P0132	HO2S Circuit High Voltage Sensor 1	B	YES
P0133	HO2S Slow Response Sensor 1	E	YES
P0134	HO2S Circuit Insufficient Activity Sensor 1	B	YES
P0135	HO2S Heater Performance Sensor 1	B	YES
P0137	HO2S Circuit Low Voltage Sensor 2	E	YES
P0138	HO2S Circuit High Voltage Sensor 2	E	YES
P013A	HO2S Slow Response Rich to Lean Sensor 2	E	YES
P013B	HO2S Slow Response Lean to Rich Sensor 2	E	YES
P0140	HO2S Circuit Insufficient Activity Sensor 2	E	YES
P0141	HO2S Heater Performance Sensor 2	E	YES
P0171	Fuel Trim System Lean	B	YES
P0172	Fuel Trim System Rich	B	YES
P0222	Throttle Position (TP) Sensor 2 Circuit Low Voltage	B	YES
P0223	Throttle Position (TP) Sensor 2 Circuit High Voltage	B	YES
P0230	Fuel Pump Relay Control Circuit	C	NO
P0261	Injector 1 Control Circuit Low Voltage	B	YES
P0262	Injector 1 Control Circuit High Voltage	B	YES
P0264	Injector 2 Control Circuit Low Voltage	B	YES
P0265	Injector 2 Control Circuit High Voltage	B	YES
P0267	Injector 3 Control Circuit Low Voltage	B	YES
P0268	Injector 3 Control Circuit High Voltage	B	YES
P0270	Injector 4 Control Circuit Low Voltage	B	YES
P0271	Injector 4 Control Circuit High Voltage	B	YES
P0300	Engine Misfire Detected	A/B	YES
P0301	Cylinder 1 Misfire Detected	A/B	YES
P0302	Cylinder 2 Misfire Detected	A/B	YES
P0303	Cylinder 3 Misfire Detected	A/B	YES
P0304	Cylinder 4 Misfire Detected	A/B	YES
P0315	Crankshaft Position (CKP) System Variation Not Learned	A	YES
P0317	Rough Road Sensing System Input Not Present	C	NO
P0324	Knock Sensor (KS) Module Performance	C	NO
P0325	Knock Sensor (KS) Circuit	C	NO
P0335	Crankshaft Position (CKP) Sensor Circuit	B	YES
P0336	Crankshaft Position (CKP) Sensor Performance	E	YES
P0340	Intake Camshaft Position (CMP) Sensor Circuit	A	YES
P0341	Intake Camshaft Position (CMP) Sensor Performance	A	YES
P0351	Ignition Coil 1 Control Circuit	B	YES
P0352	Ignition Coil 2 Control Circuit	B	YES
P0353	Ignition Coil 3 Control Circuit	B	YES
P0354	Ignition Coil 4 Control Circuit	B	YES
P0366	Exhaust Camshaft Position (CMP) Sensor Performance	B	YES
P0420	Catalyst System Low Efficiency	A	YES
P0458	Evaporative Emission (EVAP) Purge Solenoid Control Circuit Low Voltage	E	YES
P0459	Evaporative Emission (EVAP) Purge Solenoid Control Circuit High Voltage	E	YES
P0461	Fuel Level Sensor Performance	C	NO
P0462	Fuel Level Sensor Circuit Low Voltage	C	NO
P0463	Fuel Level Sensor Circuit High Voltage	C	NO
P0480	Cooling Fan Relay 1 Control Circuit	B	YES
P0481	Cooling Fan Relay 2 Control Circuit	B(M/T), C(A/T)	YES
P0502	Vehicle Speed Sensor (VSS) Circuit Low Voltage	C	NO
P0506	Idle Speed Low	E	YES
P0507	Idle Speed High	E	YES
P0532	Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit Low Voltage	C	NO
P0533	Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit High Voltage	C	NO
P0562	System Voltage Low	C	NO
P0563	System Voltage High	B	YES
P0571	Brake Switch Circuit	C	NO
P0598	Engine Coolant Thermostat Heater Control Circuit Low Voltage	C	NO
P0599	Engine Coolant Thermostat Heater Control Circuit High Voltage	C	NO
P0602	Control Module Not Programmed	A	YES
P0604	Control Module Random Access Memory (RAM)	A	YES
P0606	Control Module Internal Performance	A	YES
P0607	Control Module Performance	A	YES
P060A	Control Module Monitoring Processor Performance	A	YES
P060B	Control Module Analog to Digital Performance	A	YES
P060C	Control Module Main Processor Performance	A	YES
P060D	Control Module Accelerator Pedal Position (APP) System Performance	A	YES
P061A	Control Module Torque Performance	A	YES
P0641	5 Volt Reference 1 Circuit	A	YES
P0646	Air Conditioning (A/C) Clutch Relay Control Circuit Low Voltage	C	NO
P0647	Air Conditioning (A/C) Clutch Relay Control Circuit High Voltage	C	NO
P0650	Malfunction Indicator Lamp (MIL) Control Circuit	C	NO
P0651	5 Volt Reference 2 Circuit	A	YES
P0685	Engine Controls Ignition Relay Control Circuit	B	YES
P0697	5 Volt Reference 3 Circuit	A	YES
P0700	Transmission Control Module (TCM) Requested MIL Illumination	A	YES
P1137	HO2S Circuit Low Voltage During Power Enrichment Sensor 2	C	NO
P1138	HO2S Circuit High Voltage During Decel Fuel Cut–Off (DFCO) Sensor 2	C	NO
P1166	HO2S Circuit Low Voltage During Power Enrichment Sensor 1	E	YES
P1396	Rough Road Sensor Performance - Variation	C	NO
P1397	Rough Road Sensor Performance - No Signal	C	NO
P1631	Theft Deterrent Fuel Enable Signal Not Correct	C	NO
P2101	Throttle Actuator Position Performance	A	YES
P2104	Throttle Actuator Control (TAC) System – Forced Idle	A	YES
P2105	Throttle Actuator Control (TAC) System – Forced Engine Shutdown	A	YES
P2106	Throttle Actuator Control (TAC) System Performance – Throttle Limitation Active	A	YES
P2110	Throttle Actuator Control (TAC) System – Forced Limited Engine Speed	A	YES
P2119	Throttle Closed Position Performance	C	NO
P2122	Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage	A	YES
P2123	Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage	A	YES
P2127	Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage	A	YES
P2128	Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage	A	YES
P2135	Throttle Position (TP) Sensor 1–2 Correlation	B	YES
P2138	Accelerator Pedal Position (APP) Sensor 1–2 Correlation	A	YES
P2297	HO2S Performance During Decel Fuel Cut–Off (DFCO) Sensor 1	B	YES
P2610	Control Module Ignition Off Timer Performance	C	NO
U0101	Lost Communication With Transmission Control Module	C	NO
U0167	Lost Communication With Vehicle Immobilizer Control Module	C	NO

Diagnostic Trouble Code (DTC) P0012, P0015, P0026, P0027

DTC Description

DTC P0012 : Intake Camshaft Position (CMP) System Performance - Retarded

DTC P0015 : Exhaust Camshaft Position (CMP) System Performance – Retarded

DTC P0026 : Intake Valve Control Solenoid Control Performance

DTC P0027 : Exhaust Valve Control Solenoid Control Performance

Circuit/System Description

The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The CMP actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the CMP actuator solenoid duty cycle by controlling the amount of solenoid ON time. The CMP actuator solenoid controls the advance or the retard of each camshaft. The CMP actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.

Conditions for Running the DTC

Engine is running.
No disabling faults present.
TEC learned.

Conditions for Setting the DTC

(P0012)

This diagnostic detects an intake camshaft position phaser error.

The ECM detects the actual intake camshaft position (CMP) is between 5° and 50° when the PWM is less than 10% or greater than 85%.

Or,

The ECM detects the difference between the actual and desired CMP is greater than 12° for a certain period of time.

(P0015)

This diagnostic detects an exhaust camshaft position phaser error.

The ECM detects the actual exhaust camshaft position (CMP) is between -35° and 0° when the PWM is less than 10% or greater than 90%.

Or,

The ECM detects the difference between the actual and desired CMP is greater than 15° for a certain period of time.

(P0026)

This diagnostic detects an intake camshaft position actuator solenoid stuck error.

The ECM detects actual intake CMP is greater than 50° or less than 5° when the difference between actual and desired CMP is greater than 20°.

(P0027)

This diagnostic detects an exhaust camshaft position actuator solenoid stuck error.

The ECM detects actual exhaust CMP is less than -50° or greater than -5° when the difference between actual and desired CMP is greater than 20°.

Action Taken When the DTC Sets

DTC P0012 and P0026 are type A DTCs.
DTC P0015 and P0027 are type B DTCs.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Conditions for Clearing the MIL/DTC

DTC P0012 and P0026 are type A DTCs.
DTC P0015 and P0027 are type B DTCs.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Diagnostic Aids

The engine oil condition has a major impact on the camshaft actuator system.
A low oil level condition may set this DTC. The engine may require an oil change.
Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing belt can cause this DTC to set.

DTC P0012, P0015, P0026, P0027

Step	Action	Value(s)	Yes	No
1	Did you perform the Diagnostic System Check?	-	Go to Step 2	Go to "Diagnostic System Check"
2	Observe the DTC information with a scan tool. Are there any other DTCs also set?	-	Go to applicable DTC table	Go to Step 3
3	Turn the ignition OFF. Disconnect the harness connector from the appropriate CMP actuator solenoid. Note : The test lamp is used to load the circuit and may not illuminate. Connect a test lamp between the ignition 1 voltage circuit of the harness connector and the negative terminal of the battery. Turn the ignition ON. Measure the voltage between the ignition 1 voltage circuit of the harness connector and the positive battery terminal. Is the voltage less than the specified value?	0.1 V	Go to Step 4	Go to Step 7
4	Turn the ignition OFF. Measure the resistance between the control circuit of the harness connector and ground. Is the resistance less than the specified value?	5 ohms	Go to Step 5	Go to Step 6
5	Inspect for the following conditions: Torn, restricted, mis-positioned, or missing screens at the CMP actuator solenoid. Engine oil leaks between the oil sealing lands of the CMP actuator solenoid. Oil seepage at the CMP actuator solenoid connector. Any recent engine mechanical repairs. An incorrectly timed or incorrectly installed camshaft can cause a DTC to set. Loss in the oil supply to the CMP actuator solenoid valve or the CMP actuator assembly. A blockage or restriction in the CMP actuator system oil passages. Low oil pressure or oil supply to the CMP actuator assembly or actuator solenoid. A damaged or misaligned CMP sensor reluctor. A worn timing belt and jumped timing. A wrong camshaft installed. Did you find and correct the condition?	-	Go to Step 10	Go to Step 8
6	Inspect the control circuit for an open/high resistance. Did you find and correct the condition?	-	Go to Step 10	Go to Step 9
7	Repair the ignition 1 voltage circuit for an open/high resistance. Did you complete the repair?	-	Go to Step 10	-
8	Replace the CMP actuator. Did you complete the replacement?	-	Go to Step 10	-
9	Replace the ECM. Did you complete the replacement?	-	Go to Step 10	-
10	Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 2	Go to Step 11
11	Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed?	-	Go to applicable DTC table	System OK

Diagnostic Trouble Code (DTC) P0016, P0017

DTC Description

DTC P0016 : Crankshaft Position (CKP)-Intake Camshaft Position (CMP) Correlation

DTC P0017 : Crankshaft Position (CKP)-Exhaust Camshaft Position (CMP) Correlation

Circuit Description

The camshaft position (CMP) sensor is used to detect camshaft position and to have correlation with crankshaft position (CKP) so that the ECM can determine which cylinder is ready to be fueled by the injector.

The ECM compares the camshaft position or the camshaft angle, to the position of the crankshaft. If the ECM detects a deviation between the camshaft position target and the crankshaft position, this DTC sets.

Conditions for Running the DTC

Engine is running.
No disabling fault present.

Conditions for Setting the DTC

(P0016)

The ECM detects that offset ratio between camshaft and crankshaft is greater than 0.3616 or less than 0.2616.

(P0017)

The ECM detects that offset ratio between camshaft and crankshaft is greater than 0.1102 or less than 0.0102.

Action Taken When the DTC Sets

DTC P0016 is type A DTC.
DTC P0017 is type B DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Conditions for Clearing the MIL/DTC

DTC P0016 is type A DTC.
DTC P0017 is type B DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Diagnostic Aids

Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft sensor, crankshaft sensor, or timing belt can cause this DTC to set.
For an intermittent condition, refer to "Intermittent Conditions".

DTC P0016, P0017

Step	Action	Value(s)	Yes	No
1	Did you perform the Diagnostic System Check?	-	Go to Step 2	Go to "Diagnostic System Check"
2	Observe the Freeze Frame/Failure Records for this DTC. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 3	Go to Diagnostic Aids
3	Observe the DTC Information with a scan tool. Does the scan tool display that DTCs related to CKP sensor, and/or CMP sensor also failed this ignition?	-	Go to applicable DTC table	Go to Step 4
4	Repair one of the following conditions: For the correct installation of the camshaft position (CMP) sensor For the correct installation of the crankshaft position (CKP) sensor For a timing belt tensioner condition For an incorrectly installed timing belt For excessive play in the timing belt Did you complete the repair?	-	Go to Step 5	-
5	Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 2	Go to Step 6
6	Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed?	-	Go to applicable DTC table	System OK

Diagnostic Trouble Code (DTC) P0068

DTC Description

DTC P0068 : Throttle Body Airflow Performance

Circuit Description

Measured airflow based on MAP is compared with estimated airflow based on throttle position and engine speed. If the ECM detects that measured airflow is much higher than the throttle based estimated airflow, a DTC will set.

Conditions for Running the DTC

Engine is running.
No MAP or IAT fault exists.

Conditions for Setting the DTC

Difference between measured airflow and estimated airflow is greater than 9 g/s.

Action Taken When the DTC Sets

DTC P0068 is type A DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Conditions for Clearing the MIL/DTC

DTC P0068 is type A DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

DTC P0068

Step	Action	Value(s)	Yes	No
1	Did you perform the Diagnostic System Check?	-	Go to Step 2	Go to "Diagnostic System Check"
2	Are DTCs related to MAP sensor and/or IAT sensor also set?	-	Go to applicable DTC table	Go to Step 3
3	Observe the Freeze Frame/Failure Records for this DTC. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 4	Go to "Intermittent Conditions"
4	Inspect for the following conditions: The vacuum hoses for splits, kinks, and improper connections --Inspect thoroughly for any type of leak or restriction. Air leaks at the throttle body mounting area and the intake manifold sealing surfaces. Restrictions or leaks in the air intake system, including the filter. Restrictions or leaks at the PCV hose. Did you find and correct the condition?	-	Go to Step 7	Go to Step 5
5	Inspect for the following conditions: Loose or damaged throttle plate Broken throttle shaft Damaged throttle body Did you find and correct the condition?	-	Go to Step 7	Go to Step 6
6	Replace the throttle body assembly. Did you complete the replacement?	-	Go to Step 7	-
7	Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 3	Go to Step 8
8	Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed?	-	Go to applicable DTC table	System OK

Diagnostic Trouble Code (DTC) P0076, P0077, P0079, P0080

DTC Description

DTC P0076 : Intake Valve Control Solenoid Control Circuit Low Voltage

DTC P0077 : Intake Valve Control Solenoid Control Circuit High Voltage

DTC P0079 : Exhaust Valve Control Solenoid Control Circuit Low Voltage

DTC P0080 : Exhaust Valve Control Solenoid Control Circuit High Voltage

Circuit Description

The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.

Conditions for Running the DTC

No disabling faults present.
Engine is running.
Ignition voltage is between 11 V and 16 V.

Conditions for Setting the DTC

(P0076, P0079)

The ECM detects a short to ground or an open in the CMP actuator control circuit.

(P0077, P0080)

The ECM detects a short to voltage in the CMP actuator control circuit.

Action Taken When the DTC Sets

DTC P0076, P0077, and P0080 are type A DTCs.
DTC P0079 is type B DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Conditions for Clearing the MIL/DTC

DTC P0076, P0077, and P0080 are type A DTCs.
DTC P0079 is type B DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

DTC P0076, P0077, P0079, P0080

Step	Action	Value(s)	Yes	No
1	Did you perform the Diagnostic System Check?	-	Go to Step 2	Go to "Diagnostic System Check"
2	Turn the ignition OFF. Disconnect the harness connector from the appropriate CMP actuator solenoid. Turn the ignition ON. Connect a test lamp between the ignition 1 voltage circuit of the harness connector and ground. Does the test lamp illuminate?	-	Go to Step 3	Go to Step 4
3	Turn the ignition ON. Connect a test lamp between the control circuit and the ignition 1 voltage circuit of the harness connector. Command the CMP actuator solenoid ON and OFF with a scan tool. Does the test lamp turn ON and OFF with each command?	-	Go to Step 7	Go to Step 5
4	Inspect the ignition 1 voltage circuit for a short to ground or an open/high resistance. Did you find and correct the condition?	-	Go to Step 9	Go to Step 6
5	Inspect the control circuit for the following conditions: A short to voltage. A short to ground. An open/high resistance. Did you find and correct the condition?	-	Go to Step 9	Go to Step 8
6	Inspect the fuse that supplies voltage to the ignition 1 voltage supply circuit. If the fuse is open, test all the components connected to the ignition 1 voltage supply circuit. Did you find and correct the condition?	-	Go to Step 9	Go to "Diagnostic System Check"
7	Replace the CMP actuator. Did you complete the replacement?	-	Go to Step 9	-
8	Replace the ECM. Did you complete the replacement?	-	Go to Step 9	-
9	Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame /Failure Records. Did the DTC fail this ignition?	-	Go to Step 2	Go to Step 10
10	Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed?	-	Go to applicable DTC table	System OK

Diagnostic Trouble Code (DTC) P0106

DTC Description

DTC P0106 : Manifold Absolute Pressure (MAP) Sensor Performance

Circuit Description

Conditions for Running the DTC

(COMMON)

Engine running.
Valid Barometric Pressure (BARO) update.
Torque Converter Clutch (TCC) steady (A/T).
No TP sensor fail conditions present.
No MAP fail conditions present.

(CASE A)

Engine speed is between 1300 and 4500 rpm.
Change in idle airflow is 4.9988% or less.
Coolant temperature is -10°C (14°F) or greater.
Throttle position is less than 0.2014%.
Vehicle speed is 30 Km/h or greater.
All of the above are met for greater than 1.5 seconds.

(CASE B)

Engine speed is between 1300 and 4500 rpm.
A/C steady state.
Coolant temperature is 60°C (140°F) or greater.
Change in engine speed is 200 rpm or less.
Change in TP sensor is less than 2.9999% or change in MAP is less than 5 kPa.
Change in idle airflow is 4.9988% or less.
All of the above are met for greater than 1.5 seconds.

Conditions for Setting the DTC

(CASE A)

Altitude compensated MAP reading is greater than high threshold or less than low thresholds based on rpm and TP signal.

(CASE B)

Altitude compensated MAP reading is less than low threshold based on rpm and TP signal.

Action Taken When the DTC Sets

DTC P0106 is type E DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Conditions for Clearing the MIL/DTC

DTC P0106 is type E DTC.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Diagnostic Aids

With the ignition ON and the engine stopped, the manifold pressure is equal to atmospheric pressure and the signal voltage will be high. This information is used by the ECM as an indication of vehicle altitude. Comparison of this reading with a known good vehicle with the same sensor is a good way to check the accuracy of a suspect sensor. Readings should be the same +0.4 volt.

The MAP sensor vacuum source should be thoroughly checked for restrictions at the intake manifold.

Test Description

Numbers below refer to the step numbers on the Diagnostic Table.

A sensor that displays an ignition ON, engine OFF BARO value that does not appear normal for the altitude the vehicle is in should be considered to be malfunctioning.
While starting the engine, the MAP sensor should detect any changes in the manifold pressure. This test is to determine if the sensor is stuck at a value.
A normal MAP sensor will react as quickly to the throttle changes as they can be made. A sensor should not appear to be lazy or catch up with the throttle movements.
This step checks if the reason for no MAP change was due to a faulty sensor or vacuum source to the sensor.
The MAP sensor vacuum source should be thoroughly checked for restrictions. A drill bit can be used to clean out any casting flash that may exist in the vacuum port.
The MAP sensor vacuum source should be thoroughly checked for restrictions. A drill bit can be used to clean out any casting flash that may exist in the vacuum port.
The MAP Sensor System Performance diagnostic may have to complete several tests before determining if the diagnostic has passed or failed the last test. Operate the vehicle in the Conditions for Setting the DTC several times to ensure that the diagnostic runs enough tests to pass or fail.

DTC P0106

Step	Action	Value(s)	Yes	No
1	Did you perform the Diagnostic System Check?	-	Go to Step 2	Go to "Diagnostic System Check"
2	Install a scan tool to the Data Link Connector (DLC). Turn the ignition switch to ON, with the engine not running. Compare the Barometric Pressure (BARO) reading with a known good vehicle. Is the BARO reading similar?	-	Go to Step 3	Go to Step 8
3	Start the engine while watching the Manifold Absolute Pressure (MAP) sensor value. Does the MAP sensor value change while starting the engine?	-	Go to Step 4	Go to Step 5
4	With the engine still running, snap the throttle while watching the MAP sensor display on the scan tool. Does the MAP sensor value change rapidly with the throttle position changes?	-	Go to Step 9	Go to Step 6
5	Turn the ignition switch OFF. Remove the MAP sensor and install a vacuum pump to the MAP sensor. Turn the ignition switch ON, with the engine OFF. Apply 380 mm Hg (15 in Hg) to the MAP sensor. Does the MAP sensor value on the scan tool change?	-	Go to Step 7	Go to Step 8
6	Inspect the air induction system for the following conditions: Any damaged components Loose or improper installation An airflow restriction Any vacuum leak Improperly routed vacuum hoses Any snow or ice builup Any restrictions in the MAP sensor port or vacuum source Did you find and correct the condition?	-	Go to Step 9	Go to Step 8
7	Repair the restriction in the MAP sensor or vacuum port as necessary. Is the action complete?	-	Go to Step 9	-
8	Replace the MAP sensor. Is the action complete?	-	Go to Step 9	-
9	Clear the DTCs with a scan tool. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame /Failure Records. Did the DTC fail this ignition?	-	Go to Step 2	Go to Step 10
10	Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed?	-	Go to applicable DTC table	System OK

Diagnostic Trouble Code (DTC) P0107, P0108

DTC Description

DTC P0107 : Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

DTC P0108 : Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

Circuit/System Description

The Engine Control Module (ECM) uses the Manifold Absolute Pressure (MAP) sensor to control the fuel delivery and the ignition timing. The MAP sensor measures the changes in the intake manifold pressure which results from engine load (intake manifold vacuum) and the rpm changes, and it converts these into voltage outputs. The ECM sends a 5 volt reference voltage to the MAP sensor. As the manifold pressure changes, the output of MAP sensor also changes. By monitoring the Map sensor output voltage, the ECM knows the manifold pressure. A low pressure (low voltage) output voltage will be about 1.0 to 1.5 volts while the higher pressure (high voltage) output voltage will be about 4.5 to 4.8 volts at Wide Open Throttle(WOT). The MAP sensor is also used, under certain conditions to measure Barometric Pressure (BARO), allowing the ECM to make adjustments for different altitude.

Conditions for Running the DTC

P0107

No TP sensor fail conditions present.
Throttle position is 0% or greater if the engine speed is 1000 RPM or less.

Or, throttle position is 14.9994% or greater if the engine speed is greater than 1000 RPM.

Ignition voltage is greater than 11V.

P0108

No TP sensor fail conditions present.
Engine running time is greater than 10 seconds.
Throttle position is 14.9994% or less if the engine speed is 2500 RPM or less.

Or, throttle position is 35.0006% or less if the engine speed is greater than 2500 RPM.

Conditions for Setting the DTC

P0107

The ECM detects that the raw MAP signal is less than 2% of the sensor reading scale.

P0108

The ECM detects that the raw MAP signal is greater than 98% of the sensor reading scale.

Action Taken When the DTC Sets

DTC P0107 and P0108 are type B DTCs.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Conditions for Clearing the MIL/DTC

DTC P0107 and P0108 are type B DTCs.

Refer to “Diagnostic Trouble Code (DTC) Type Definitions”

Diagnostic Aids

For an intermittent fault condition, refer to "Intermittent Conditions".
Inspect the MAP sensor for an incorrectly routed harness or if the harness is too close to the following:

solenoids,
relays, and
motors.

Since fault condition in a wiring connector may trigger DTCs, always test the connectors related to this diagnostic procedure for shorted terminals or poor wiring connection before replacing any component.

DTC P0107, P0108

Step	Action	Value(s)	Yes	No
1	Did you perform the Diagnostic System Check?	-	Go to Step 2	Go to "Diagnostic System Check"
2	Observe the MAP sensor raw signal with a scan tool. Is the signal less than the specified value?	100 mV	Go to Step 4	Go to Step 3
3	Is the signal greater than the specified value?	4900 mV	Go to Step 6	Go to Step 4
4	Observe the Freeze Frame/Failure Records for this DTC. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 5	Go to "Intermittent Conditions"
5	Monitor the Diagnostic Trouble Code (DTC) information with a scan tool. Does the scan tool indicate that DTC P0651 is also set?	-	Go to applicable DTC table	Go to Step 7
6	Monitor the Diagnostic Trouble Code (DTC) information with a scan tool. Does the scan tool indicate that DTC P0651 is also set?	-	Go to Step 9	Go to Step 10
7	Turn OFF the ignition. Disconnect the MAP sensor electrical connector. Turn ON the ignition, with the engine OFF. Measure the voltage from the 5-volt reference circuit of the boost pressure sensor to a good ground with a DMM. Is the voltage greater than the specified value?	4.8 V	Go to Step 8	Go to Step 12
8	Connect a 3-amp fused jumper wire between the 5-volt reference circuit and the signal circuit of the MAP sensor. Does the scan tool indicate that the signal is greater than the specified value?	4900 mV	Go to Step 16	Go to Step 13
9	Turn OFF the ignition. Disconnect the MAP sensor electrical connector. Turn ON the ignition, with the engine OFF. Does the scan tool indicate that the MAP sensor raw signal is less than the specified value?	100 mV	Go to DTC P0651 table	Go to Step 14
10	Turn OFF the ignition. Disconnect the MAP sensor electrical connector. Turn ON the ignition, with the engine OFF. Does the scan tool indicate that the MAP sensor raw signal is less than the specified value?	100 mV	Go to Step 11	Go to Step 14
11	Remove the MAP sensor. Connect a jumper wire between each of the terminals in the MAP sensor harness connector and the corresponding terminal at the MAP sensor. Measure the voltage from the low reference circuit of the MAP sensor at the jumper wire terminal to a good ground with a DMM. Is the voltage greater than the specified value?	0.2 V	Go to Step 15	Go to Step 16
12	Test the 5-volt reference circuit of the MAP sensor for an open. Did you find and correct the condition?	-	Go to Step 20	Go to Step 17
13	Test the signal circuit of the MAP sensor for a short to ground or an open. Did you find and correct the condition?	-	Go to Step 20	Go to Step 17
14	Test the signal circuit of the MAP sensor for a short to voltage. Did you find and correct the condition?	-	Go to Step 20	Go to Step 19
15	Test the low reference circuit of the MAP sensor for a high resistance or an open. Did you find and correct the condition?	-	Go to Step 20	Go to Step 17
16	Inspect for poor connections at the MAP sensor. Did you find and correct the condition?	-	Go to Step 20	Go to Step 18
17	Inspect for poor connections at the engine control module (ECM). Did you find and correct the condition?	-	Go to Step 20	Go to Step 19
18	Replace the MAP sensor. Did you complete the replacement?	-	Go to Step 20	-
19	Replace the ECM. Did you complete the replacement?	-	Go to Step 20	-
20	Clear the DTCs with the scan tool. Turn OFF the ignition for 30 seconds. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition?	-	Go to Step 2	Go to Step 21
21	Check if any additional DTCs are set. Are there any DTCs that have not been diagnosed?	-	Go to applicable DTC table	System OK