U0156

U0156-LOST COMMUNICATION WITH EOM



- When Monitored:
Continuously when the ignition is on.

The battery voltage is between 10 and 16 volts.

Ignition Off Draw (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 two to five seconds.





VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

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 the active DTCs.

Is this DTC active?

Yes

- Testing and Inspection and perform the U0156-Lost Communication with EOM diagnostic procedure.

No

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