Acuralink Control Unit

DTC Troubleshooting: U0155 (AcuraLink Control Unit)

DTC U0155: F-CAN Lost Communication with Gauge Control Module

1. Connect the HDS to the DLC. How to Troubleshoot the AcuraLink (With AcuraLink)

2. Turn the ignition switch to ON (II).

3. Check for DTCs with the HDS and DTC log data in the navigation system diagnostic mode. Navigation System Diagnostic Mode

Is DTC U0155 indicated with HDS and on the navigation display?
YES - Go to step 4.

NO - Intermittent failure, the F-CAN communication line is OK at this time. Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver).


4. Turn the ignition switch to LOCK (0).

5. Disconnect AcuraLink control unit (XM receiver) connector A (32P) and the gauge control module 32P connector.

6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) terminals No. 6 and No. 7 and gauge control module 32P connector terminals No. 21 and No. 22 respectively.

Is there continuity?
YES - Check for poor connections or loose terminals at the AcuraLink control unit (XM receiver). If all connections are OK, update the AcuraLink control unit if it does not have the latest software, then recheck. If the software is the latest, replace the AcuraLink control unit (XM receiver). AcuraLink Control Unit (XM Receiver) Removal/Installation

NO - Repair an open in the wire between AcuraLink control unit (XM receiver) and gauge control module.