Diagnostic Aids
WARNING: This page is about a different car, the 2002 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
Perform this test when instructed during SYMPTOM DIAGNOSIS. This test is only intended to diagnose the following:
- Cooling fan harness circuits.
- High fan control relays.
- Low fan control relay.
- PCM.
FAN CONTROL RELAY SIG CIRCUIT, PID & TERMINAL IDENTIFICATION
| Circuit (PID) | PCM Terminal No. | Wire Color |
|---|---|---|
| HFAN SIG (FANHP) | 32 | Brown/White |
| LFAN SIG (FANSP) | 34 | Blue/Orange |
| Relay PWR | N/A | Blue |
| Cooling Fan PWR | N/A | Blue |