U128F

DTC Troubleshooting: U128F

DTC U128F:

Gauge Control Module Lost Communication With BSI Control Unit (BSI Message)

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. Clear the DTCs with the HDS.

2. Press the engine start/stop button to select the OFF, ACC, ON, and OFF mode.

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC U128F indicated?

YES -

Go to the BSI control unit input test, and do all power, ground, and communication input tests. If the tests prove OK, replace the BSI control unit BSI Control Unit Removal/Installation.�

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections at the BSI control unit 16P connector and the related units.�