Checking Radiator Fan Operation

Tests 1 - 3:

Tests 4 - 8:

Tests 9 - 12:

SYMPTOM
CHECKING RADIATOR FAN OPERATION WITH NO DTC'S

POSSIBLE CAUSES
- Check radiator fan high speed operation
- Fused B+ circuit open
- High speed radiator fan relay output circuit open
- Radiator fan ON/OFF relay (output open)
- Radiator fan HIGH/LOW relay (output open)
- Radiator fan motor
- Low speed radiator fan relay output circuit open from ON/OFF relay
- Radiator fan motor ground circuit open
- Low speed radiator fan relay output circuit open from HIGH/LOW relay
- Radiator fan motor