XB33 - Check Power to Cooling Fan Circuit Continuity
- Key "OFF".
- Cooling fan disconnected.
- Disconnected Variable Control Relay Module (VCRM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.
- Measure resistance between the power-to-cooling fan circuit at the cooling fan vehicle harness connector and Pins 2 and 3 of the VCRM vehicle harness connector.
- Is resistance less than 5.0 ohms?
Yes -- Replace VCRM. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)
No -- Service open in power-to-cooling fan circuit. Reconnect all components. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)