U110E

U110E-LOST AMBIENT TEMPERATURE MESSAGE





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

Ignition on.

- Set Condition:

The PCM doesn't receive the ambient temperature signal over the CAN C bus from the FCM. The circuit is continuously monitored. One Trip fault.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Theory of Operation

The ambient temperature sensor signal is a direct input to the FCM. The FCM sends the PCM the ambient temperature signal over the CAN C bus.

Diagnostic Test

1. ACTIVE DTC

Ignition on, engine not running.

With the scan tool, View PCM DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition

2. U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE ALSO ACTIVE

With the scan tool view DTCs.

Is the U0141-NO BUS MESSAGE RECEIVED FROM THE FCM also set?

Yes

- Follow the diagnostics for U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE

No

- Replace and program the Powertrain Control Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test