Circuit/System Verification
- Ignition ON.
- Verify that DTC P0480, P0481, P0691, P0692, P0693, or P0694 is not set.
- If a DTC is set
- If no DTC is set
- Verify the scan tool parameters listed below display OFF:
- Cooling Fan Relay 1 Command
- Cooling Fan Relays 2 and 3 Command
- If a scan tool parameter displays ON
Refer to Diagnostic Aids and Symptoms - Engine Cooling for further diagnosis.
- If both scan tool parameters display OFF
- Verify that the fans are not activated.
- If a fan is operating
Refer to Circuit/System Testing.
- If both fans are OFF
- If a fan is operating
- All OK