Displaying & Reading Trouble Codes - Climate Control

General Troubleshooting Information

How to Retrieve a DTC
The climate control unit has a self-diagnosis function. To run the self-diagnosis function, do the following:

1. Turn the ignition switch ON (II).




2. Press the AUTO button and then the OFF button.

If there is any abnormality in the system, the temperature indicator will light up 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).

NOTE: The system will only display the DTC when the AUTO and OFF buttons are pressed. If you release the buttons, the display will go blank. To return the display, simply press the AUTO then the OFF buttons again.

To determine the meaning of the DTC, refer to the DTC Troubleshooting Index. If there is no abnormality, the segments will not light up. Diagnostic Trouble Code Descriptions






NOTE: If there are no DTCs detected (no opens or shorts in the climate control circuits or sensors), and the system is still not operating properly, check the sensor input to the climate control unit

Canceling the Self-diagnosis Function
3. Turn the ignition switch OFF to cancel the self-diagnosis function. After completing repair work, run the self-diagnosis function again to make sure that there are no other malfunctions.