Keyless Access Control Unit

DTC Troubleshooting: U0155

DTC U0155:

Keyless Access Control Unit Lost 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. Clear the DTCs with the HDS.

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

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC U0155 indicated?

YES -

Go to the gauge control module input test, and do all power, ground, and communication input tests Gauge Control Module Input Test. If the tests prove OK, replace the gauge control module Service and Repair.�

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections at the gauge control module and the related units.�