Without Scan Tool

How to Use the Self-diagnostic Function (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.

1. Turn the ignition switch OFF and then ON (II).




2. Press and hold the OFF button, then press the rear window defogger button five times within 10 seconds. Release the buttons. All the LEDs blink for 2 seconds, then the self-diagnostic function begins.

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





3. Set the navigation system diagnosis mode. Touch the Aircon button.
- If there is any problem in the system, the display panel will indicate it. To determine the meaning of the indication, refer to the above table.
- If there are no problems detected, the display panel will be blank.

Canceling the Self-diagnostic Function




4. 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.

NOTE: In the case of multiple problems, the display panel will indicate them all. If the navigation display indicates TR sensor open, TMA sensor open, TS sensor open, TE sensor open, DrVENT sensor open, PaVENT sensor open, and PRE sensor open at the same time, there may be an open in the common ground wire.