U110E

U110E-LOST AMBIENT TEMPERATURE MESSAGE

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The ambient temperature sensor signal is a direct input to the Totally Integrated Power Module (TIPM). The TIPM busses the ambient temperature signal over the CAN network.

- When Monitored:
Ignition on.

- Set Condition:
The Powertrain Control Module (PCM) doesn't receive the ambient temperature signal over the CAN C bus from the BCM. The circuit is continuously monitored. One Trip fault.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan too, select View PCM DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

2. U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM) ALSO ACTIVE
1. With the scan too, select View DTCs.

Is the U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM) also set?

Yes

- Perform the U0141-Lost Communication with IPM (FCM/TIPM) diagnostic procedure. U0141.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Stored Lost Communication DTCs and perform the Stored Lost Communication DTCs diagnostic procedure.