XB25 - Check VCRM Connector and Power to Cooling Fan Circuit

- Key "OFF".

- Disconnect Variable Control Relay Module (VCRM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Connect a test lamp between Pin 2 and Pin 4 of the VCRM vehicle harness connector.

- Observe test lamp for an indication of a fault while performing the following: (The lamp will be on, but not to full brightness. A short to ground will be indicated by the lamp getting brighter.)

- Shake, wiggle, bend the power-to-cooling fan circuit near the cooling fan.

- Disconnect cooling fan. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Test lamp still connected between Pin 2 and Pin 4 of the VCRM vehicle harness connector.

- Observe test lamp for an indication of a fault while performing the following (the lamp will turn on, indicating a short to ground):

- Again, shake, wiggle, bend the power-to-cooling fan circuit from the VCRM vehicle harness connector to the cooling fan vehicle harness connector.

- Is a fault indicated?

Yes -- Isolate fault and service as necessary. Reconnect all components. Start engine. A/C "ON", wait 5 seconds. A/C "OFF", Key "OFF". Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Unable to isolate fault at this time. Reconnect all components. For further diagnosis using the EEC-IV Monitor Box or Scan Tool, go to Normal Scan Data Values. For further diagnosis of this, or any other symptom, return to Diagnostic Routines. Symptom Related Diagnostic Procedures