U0155-LOST COMMUNICATION WITH CLUSTER/CCN

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the ignition on.
Battery voltage between 10 and 16 volts.
Airbag fuse installed.
TIPM is configured correctly.
Set Condition:
Bus messages not received from the Cluster/CCN for approximately 2 to 5 seconds.

Possible Causes

CAN B BUS CIRCUITS OPEN OR SHORTED

DTC'S RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES

CLUSTER/CCN

CLUSTER/CCN POWER AND GROUND

MODULE THAT SET THE DTC

1.VERIFY DTC IS ACTIVE

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.

Is this DTC active?

Yes

Refer to the Stored Lost Communication test procedure. Refer to the table of contents in this section.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

2.CHECK FOR ANY OF THE FOLLOWING ACTIVE DTC'S

NOTE: Check for TIPM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTC's.

Does the scan tool display any active DTC's to the conditions listed above?

Yes

Diagnose and repair the DTC. Refer to the Table of Contents for a complete list of the symptoms.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

3.VERIFY THAT THE CCN IS ACTIVE ON THE BUS

Is the CCN active on the bus?

Yes

Refer to the Table of Contents located in this section for a no response test procedure.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

4.CHECK FOR ADDITIONAL COMMUNICATION RELATED DTC'S

Is there more than one module with active DTC's “Logged Against” the CCN?

Yes

Replace/update the Cluster (CCN) in accordance with the service information.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Replace/update the module that set this DTC in accordance with the service information.
Perform the BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).