U110E

U110E-LOST AMBIENT TEMPERATURE MESSAGE





For complete wiring diagrams 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 TIPM. 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 TIPM. The TIPM 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 too, select 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 (TIPM) ALSO ACTIVE

With the scan too, select View DTCs.

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

Yes

- Follow the diagnostics for U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE (TIPM). U0141
- Perform POWERTRAIN VERIFICATION TEST. Powertrain Verification Test

No

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