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.
Enter this test only when directed here from other system tests. This test is only intended to diagnose the following components and circuits:
- Harness circuits; VPWR. PWR, GND and PCMR.
- PCM relay.
- PCM.
PCM TERMINAL CIRCUIT IDENTIFICATION
| PCM Terminal No. | Circuit | Wire Color |
|---|---|---|
| 4 | PCMR | White/Green |
| 7 | COMM | Green/Black |
| 10, 19, 96 & 104 | GND | Black |
| 18 | MIL | Violet |
| 22 | COMM | Gray/Red |
| 24 | COMM | Green/White |
| 25 | COMM | White |
| 31 | COMM | Pink/Black |
| 33 | COMM/TP SIG | Red/Green |
| 38 | IGN | Blue/Yellow |
| 39 & 45 | GND | Black/Red |
| 57 | VREF | Brown |
| 58 | SIG RTN | Black/Yellow |
| 66, 71 & 97 | VPWR | Black/White |
| 80 | KAPWR | Yellow |