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.

The battery voltage is between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Front Control Module (FCM) is configured correctly.

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





VERIFY 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

- Perform the U0156-Lost Communication with EOM diagnostic procedure. U0156

No

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