Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

Ignition - On / Vehicle - In Service Mode
Verify DTC P2228, P2229, P2230, P227C, P227D, P227E, U060F, U1346 is not set.
- If only DTC P2228, P2229, P2230, P227C, P227D, P227E is set
  Replace the component: B75C Multifunction Intake Air Sensor
- If DTC U060F, U1346 is set and other DTCs are set
  Refer to: DTC P0102, P0103, or U060F
- Go to next step: If no DTC is 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
  Replace the component: B75C Multifunction Intake Air Sensor
- If in the specified range
Verify the following conditions do not exist:
- B75C Multifunction Intake Air Sensor - Contamination of the measuring element/Cracked/Loose Clamps/Visible Damage/Water intrusion
- 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, 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
  Repeat the procedure starting at step 2
- Go to next step: If the DTC is not set
All OK.