Reading and Clearing Diagnostic Trouble Codes

Diagnostic Chart for Self-diagnosis

OPERATION






NOTE: For A/C system self-diagnosis, there is one that checks the control panel, and the other that checks the whole control system (sensor, actuator, blower motor, etc.). Perform the self-diagnosis for control panel first, and then perform the self-diagnosis for control system.

1. A/C CONTROL PANEL SELF-DIAGNOSIS

Step 1-7:

Step 8:

2. SWITCH CHECK TABLE






3. A/C CONTROL SYSTEM SELF-DIAGNOSIS

Step 1-3:

4. SENSOR CHECK TABLE

NOTE: When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an open circuit. Always check the sunload sensor with the sun shining on it.






5. OPERATING MODE TABLE