U11C2

U11C2-LOST TRANSMISSION MESSAGE

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

- When Monitored:

- With the ignition on.
- Battery voltage between 10 and 16 volts.
- Ignition Off Draw (IOD) fuse installed.
- Totally Integrated Power Module (TIPM) is configured correctly.
- Set Condition:
The Powertrain Control Module (PCM) has not received a Bus message from the Transmission Control Module (TCM) for approximately 500ms.





1. VERIFY DTC IS ACTIVE

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding.

1. Turn the ignition on.
2. With the scan tool, read active PCM DTCs.

Is this DTC active?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test

2. U0101-LOST COMMUNICATION WITH TCM ALSO SET
1. With the scan tool continue reading DTCs.

Is the U0101-LOST COMMUNICATION WITH TCM also set?

Yes

- Perform the U0101-00-Lost Communication with TCM diagnostic procedure. U0101.

No

- Replace and program the Powertrain Control Module (PCM). Powertrain Control Module - Removal.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.