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. PCM Pre-Diagnostic Troubleshooting Procedure.

Diagnostic Test

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. PCM 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

- Manufacturer Code Charts and perform the Stored Lost Communication DTCs diagnostic procedure.