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, P2228, P2229, P2230, P227C, P227D, P227E 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:
- BARO Sensor 1 = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- BARO Sensor 2 = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- If not in the specified range
Refer to: DTC P2228-P2230 or P227C-P227E
- If in the specified range
- Verify the following conditions do not exist:
- Mass Airflow Sensor - Cracked/Loose Clamps/Visible Damage
- O-Ring @ B75C Multifunction Intake Air Sensor/Leaking/Missing/Visible Damage
- If a condition exists
Repair or replace as necessary
- Go to next step: If no condition exists
- Verify the scan tool parameter:
- BARO Sensor 1 = The value should not spike or drop out.
- BARO Sensor 2 = The value should not spike or drop out.
- Perform the action while monitoring the parameter:
- Wiggle the harness and connector: B75C Multifunction Intake Air Sensor
- Wiggle the harness and connector: K20 Engine Control Module
- If the value spikes or drops out
Repair as necessary - Wiring/Terminal(s)/Electrical Connector(s)
- Go to next step: If the value does not spike or drop out
- 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
Replace the component: B75C Multifunction Intake Air Sensor
- Go to next step: If the DTC is not set
- If the DTC sets
- All OK.