AUX Fan Relay Control High or Open (Active)

Test 1 - Test 3:

Test 4:

SYMPTOM
AUX FAN RELAY CONTROL HIGH OR OPEN (ACTIVE)

POSSIBLE CAUSES
- A/C auxiliary FAN relay high side control circuit shorted to voltage
- Ground circuit open
- A/C auxiliary FAN relay high side control circuit open
- A/C auxiliary FAN relay
- Automatic temperature control (ATC)