Without Scan Tool

How to Retrieve a DTC (Without HDS)

The audio-HVAC display module has a self-diagnostic function for climate control. To run the self-diagnostic function, do the following:

NOTE: Before troubleshooting the climate control system, refer to the multiplex integrated control system test mode A.

1. Turn the ignition switch ON (II).
2. Press the AUTO button, and set the temperature to Low.




3. Press and hold the OFF button. While holding the OFF button, press the rear window defogger button fire times within 10 seconds. The self-diagnostic will begin.




If there is any problem in the system, the temperature indicator will light up the segment (A through Q) corresponding to the error. The temperature indicator will then alternate every second between displaying "88" (all segments lit) and the error code segment (A through Q). To determine the meaning of the DTC, refer to the DTC Troubleshooting Index.

If there are no problems detected, the screen will go blank in about 10 seconds.

Cancelling the Self-diagnostic Function

4. Turn the ignition switch OFF or press the AUTO button to cancel the self-diagnostic function. After completing repair work, run the self-diagnostic function again to make sure that there are no other malfunctions.