U0164

DTC Troubleshooting: U0164

DTC U0164:

Door Multiplex Control Unit Lost Communication With Climate Control Unit

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. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC U0164 indicated?

YES -

Go to the door multiplex control unit input test and check the power and grounds. If OK, replace the driver's power window master switch.�

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections between the door multiplex control unit and climate control unit.�