Circuit/System Verification
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC P0117, P0118, U060F, U0610 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 Freeze Frame/Failure Records parameters listed below are within 30°C (54°F) of the following parameter: Start-Up Engine Coolant Temperature Sensor
- Start-Up Intake Air Temperature Sensor
- Start-Up Intake Air Temperature Sensor 2
- Start-Up Intake Air Temperature Sensor 3
- If not within 30°C (54°F) of each other
Replace the appropriate component:
- B75D Multifunction Intake Air Sensor - Bank 1
- B75E Multifunction Intake Air Sensor - Bank 2
- Go to next step: If within 30°C (54°F) of each other
- Verify the scan tool parameter:
- Intake Air Temperature Sensor = The parameter value should not change
- Intake Air Temperature Sensor 2 = The parameter value should not change
- Perform the action while monitoring the parameter:
- Wiggle the harness and connector: B75D Multifunction Intake Air Sensor - Bank 1
- Wiggle the harness and connector: B75E Multifunction Intake Air Sensor - Bank 2
- Wiggle the harness and connector: K20 Engine Control Module
- If the parameter value changes
Repair as necessary - Wiring / Terminal (s) / Electrical Connector (s)
- Go to next step: If the parameter value does not change
- 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
- If the DTC sets
- All OK.