U0156

U0156-LOST COMMUNICATION WITH EOM





For a complete wiring diagram, refer to the wiring information Electrical Diagrams..

- When Monitored:
Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

IOD fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

- Set Condition:
Bus messages not received from the Electronic Overhead Module (EOM) for approximately 2 to 5 seconds.





VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Ensure 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 Door Module DTCs.

Is this DTC active?

Yes

- Perform the diagnostic procedure for this DTC. Testing and Inspection.

No

- Perform the Stored Lost Communication DTCs diagnostic test procedure. Stored Lost Communication DTCs.