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 is not set.
- If any of the DTCs are set
Refer to: DTC P0641, P0651, P0697, or P06A3
- Go to next step: If none of the DTCs are set
- If any 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 Cleaning
- Go to next step: If less than 90%
- If 90% or greater
- Perform the scan tool control function: Throttle Sweep - On
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 in the specified range
- If not in the specified range
- Engine - Running
- Verify the scan tool parameter: MAP Sensor = 26 to 52 kPa (3.8 to 7.5 PSI) and changes - 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
- Perform the following steps:
- Observe the scan tool parameter:
- MAF Sensor
- Engine Speed
- Increase the engine speed slowly to 3000 RPM and then back to idle.
- Review the scan tool snapshot data.
- 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 P0101
- Go to next step: If the value changes smoothly and gradually
- Observe the scan tool parameter:
- 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 that no DTCs are set.
- If any DTC is set
Refer to: Circuit/System Testing
- Go to next step: If no DTC is set
- If any DTC is set
- All OK.