U128D

DTC Troubleshooting: U128D

DTC U128D:

AcuraLink Control Unit (XM Receiver) Lost B-CAN Communication with Gauge Control Module

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. Troubleshooting - B-CAN System Diagnosis Test Mode A

1. Connect the HDS to the DLC. How to Troubleshoot the 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 use XM (HIP) Diag. Navigation System Diagnostic Mode

Is DTC U128D indicated with HDS and on the navigation display?

YES -

Go to step 4.

NO -

Intermittent failure, the B-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 36P connector.

6. Check for continuity between AcuraLink control unit (XM receiver) connector A (32P) terminal No. 10 and gauge control module 36P connector terminal No. 30.





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 (XM receiver) AcuraLink Control Unit Update 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.�