Circuit/System Verification
WARNING: This page is about a different variant/trim than selected.
NOTE:
If you were sent here from DTC P0068, P0101, P0106, P1101 - Refer to: Circuit/System Testing.
- Ignition - On/Vehicle - In Service Mode
- Verify DTC P0601-P0607, P06A3, P16F3 is not set.
- If any of the DTCs are set
- Go to next step: If none of the DTCs are set
- Verify the scan tool parameter: Throttle Body Idle Air Flow Compensation = Less than 90%
- If 90% or greater
Refer to: Throttle Body Inspection and Cleaning
- Go to next step: If less than 90%
- If 90% or greater
- Verify DTC P0122, P0123, P0222, P0223, P2135, U0606, U0607 is not set.
- If only DTC P0122, P0123, P0222, P0223, P2135 is set
Replace the component: Q38 Throttle Body
- If DTC U0606, U0607 and one or more of the DTCs P0122, P0123, P0222, P0223, P2135 is set
Refer to: Circuit/System Testing
- Go to next step: If none of the DTCs are set
- If only DTC P0122, P0123, P0222, P0223, P2135 is set
- Perform the scan tool control function: Throttle Sweep - Start
Verify the scan tool parameter: Throttle Position Sensors 1 and 2 = Agree
- If not the specified state
Replace the component: Q38 Throttle Body
- Go to next step: If the specified state
- If not the specified state
- Verify DTC P0122, P0123, P0222, P0223, P2135, U0606, U0607 is not set.
- If any of the DTCs are set
Refer to: Circuit/System Testing
- Go to next step: If none of the DTCs are set
- If any of the DTCs are set
- Verify the scan tool parameter: MAP Sensor = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- If not in the specified range
Refer to: DTC P0107 or P0108
- Go to next step: If in the specified range
- If not in the specified range
- Engine - Running
- Verify the scan tool parameter: MAP Sensor = 22 to 52 kPa (3.2 to 7.5 PSI) - The value should change with accelerator pedal input.
- If not in the specified range or does not change
Refer to: DTC P0107 or P0108
- Go to next step: If in the specified range and changes
- If not in the specified range or does not change
- Observe the scan tool parameter: MAF Sensor & Engine Speed
- Increase the engine speed slowly to 3, 000 RPM and then back to idle.
- Verify the scan tool parameter: MAF Sensor = The value should change smoothly and gradually as the engine speed is increased and decreased.
- If the value does not change smoothly and gradually
Refer to: DTC P0102 or P0103
- Go to next step: If the value changes smoothly and gradually
- If the value does not change smoothly and gradually
- 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 data.
Verify the DTC does not set.
- If the DTC sets
Refer to: Circuit/System Testing
- Go to next step: If the DTC does not set
- If the DTC sets
- All OK.