Circuit/System Verification
WARNING: This page is about a different variant/trim than selected.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC P0641, P0651, P0697, P06A3, P06D2 is not set.
- If any of the DTCs are set
Refer to: DTC P0641, P0651, P0697, P06A3, or P06D2
- Go to next step: If none of the DTCs are set
- If any of the DTCs are set
- If you were sent here from DTC P0068, P0106, P0121, P1101 - Refer to: Circuit/System Testing.
- Engine - Idling - At normal operating temperature - For greater than 60 s
- Verify the scan tool parameter: Throttle Body Idle Air Flow Compensation = Less than 90%
- If 90% or greater
Refer to: Throttle Body Cleaning
- Go to next step: If less than 90%
- If 90% or greater
- 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
Refer to: DTC P0121-P0123, P0222, P0223, P2135, U0606, or U0607
- Go to next step: If the specified state
- If not the specified state
- Determine the current vehicle testing altitude.
- 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 P0106, P0107, or P0108
- Go to next step: If the specified state
- If not in the specified range
- Verify the scan tool parameter: MAP Sensor = 26 to 52 kPa (3.8 to 7.5 PSI) - The value should change with accelerator pedal input.
- If not between 26 and 52 kPa (3.8 and 7.5 PSI) or does not change
Refer to: DTC P0106, P0107, or P0108
- Go to next step: If between 26 and 52 kPa (3.8 and 7.5 PSI) and changes
- If not between 26 and 52 kPa (3.8 and 7.5 PSI) or does not change
- Monitor the scan tool parameter: MAF Sensor
Perform the following steps:
- Engine - Idling - At normal operating temperature
- Increase the engine speed slowly to 3 000 RPM and then back to idle.
- Review Stored Data
- While reviewing the data frame by frame, the parameter should change smoothly and gradually as the engine speed was increased and decreased.
- If the value does not change smoothly and gradually
Refer to: Circuit/System Testing
- Go to next step: If the value changes 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.