Checking Rad Fan High Speed Operation (Turbo)

Test 1 - 3:

Test 4 - 6:

SYMPTOM
CHECKING RAD FAN HIGH SPEED OPERATION (TURBO)

POSSIBLE CAUSES
- Ground circuit open
- Radiator fan motor
- Fused B+ circuit
- Radiator fan relay output circuit
- RAD fan relay #1 operation
- Radiator fan relay
- Relay #3 ground circuit open (Z1)