U0155-LOST COMMUNICATION WITH CLUSTER/CCN

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

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 Instrument Cluster (CCN) for approximately two to five seconds.

Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
INSTRUMENT CLUSTER POWER AND GROUND
TIPM NOT CONFIGURED CORRECTLY
INSTRUMENT CLUSTER (CCN)
MODULE THAT SET THIS DTC

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 active DTCs.

Is this DTC active?

Yes

(Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing) and perform the U0155-Lost Communication with Cluster/CCN diagnostic procedure.

(Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the Stored Lost Communication DTCs diagnostic procedure.