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:











BLOWER MOTOR DOES NOT ROTATE

TROUBLE SYMPTOM:
- Blower motor does not rotate.
- Blower motor does not change speeds.

WIRING DIAGRAM:














BLOWER MOTOR TURNS AROUND EARLY

TROUBLE SYMPTOM:
- The blower rotates even though the blower switch is not turned on.
- The blower motor continues to rotate at high speed. (Not adjustable.)

WIRING DIAGRAM:











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

TROUBLE SYMPTOM:
- Compartment temperature does not change. (Cold air does not come out.)
- A/C system does not respond. (Response is extremely slow)

WIRING DIAGRAM: