Circuit/System Verification
- Verify the coolant is at the correct level.
- If not correct
Repair as necessary
- Go to next step: If correct
- If not correct
- Ignition/Vehicle - Off - For greater than 8 h
- Ignition - On / Vehicle - In Service Mode
- Verify the scan tool parameter:ECT Sensor/IAT Sensor/Radiator Coolant Temperature Sensor = Within 9°C (16°F) of each other
- If not within 9°C (16°F) of each other
Refer to: Circuit/System Testing
- Go to next step: If within 9°C (16°F) of each other
- If not within 9°C (16°F) of each other
- Verify the scan tool parameter:Radiator Coolant Temperature Sensor = -39 to 120°C (-38 to 248°F)
- If not between -39 and 120°C (-38 and 248°F)
Refer to: Circuit/System Testing
- Go to next step: If between -39 and 120°C (-38 and 248°F)
- If not between -39 and 120°C (-38 and 248°F)
- Verify the scan tool parameter:Radiator Coolant Temperature Sensor = The value should not spike or drop out.
Perform the action while monitoring the parameter:
- Wiggle the harness and connector:B203 Radiator Coolant Temperature 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
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC sets
- All OK.