Diagnostics For A/C System Malfunction

Diagnostics for A/C System Malfunction

A/C OR SELF-DIAGNOSIS SYSTEMS DO NOT OPERATE

TROUBLE SYMPTOM:
- Set temperature is not indicated on the display, switch LEDs are faulty and switches do not operate.
- Self-diagnosis system does not operate.

WIRING DIAGRAM:

Wiring Diagram:

Step 1-9:

BLOWER FAN DOES NOT ROTATE

TROUBLE SYMPTOM:
- Blower motor does not rotate.
- Blower motor does not rotate in "HI".

WIRING DIAGRAM:

Wiring Diagram:

Step 1-5:

COMPARTMENT TEMPERATURE DOES NOT CHANGE, OR A/C SYSTEM DOES NOT RESPOND PROMPTLY

WIRING DIAGRAM:

Wiring Diagram:

Step 1-6:

Step 7-11:

Step 12: