Without Scan Tool

Retrieving DTCs (without HDS)

The climate control unit has a self-diagnostic function. To run the self-diagnostic function, do the following:

NOTE: Before troubleshooting the climate control system, refer to B-CAN System Diagnosis Test Mode A Troubleshooting- B-CAN System Diagnosis Test Mode A Troubleshooting, and the communication circuit self-diagnostic function test.

1. Turn the ignition switch ON (II).




2. Press and hold the OFF button. While holding the OFF button, press the rear window defogger button five times within 10 seconds. Release the OFF button. All the LEDs and LCD segments should blink three times, then the self-diagnostic begins. Wait for about one minute for the self-diagnostic to complete.

NOTE: The blower motor can be run at any speed regardless of what the panel is displaying.




If there is any problem in the system, the temperature indicator will light the AUTO indicator and the segment (A through N) 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 N) and AUTO indicator. To determine the meaning of the DTC, refer to the DTC Troubleshooting Index. Electronic Climate Control

If there are no problems detected, the segments will not illuminate, and the system will appear to be turned off.

Canceling the Self-diagnostic Function

3. Turn the ignition switch OFF 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.