PINPOINT TEST B: Powertrain Control Module (PCM) Power Relay: Introduction
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
This pinpoint test is intended to diagnose the following:
- harness circuits: B+, INJPWRM, ISP-R, PCMRC, and VPWR
- PCM power relay (12A646)
- PCM (12A650)
Harness Side
| Circuit | Pin |
|---|---|
| B+ (Battery Positive Voltage) | 5 |
| B+ (Battery Positive Voltage) | 1 |
| PCMRC (PCM Relay Control) | 2 |
| VPWR (Vehicle Power) | 3 |
Harness Side
| Circuit | Pin |
|---|---|
| PCMRC (PCM Relay Control) | B25 |
| ISP-R (Ignition Switch Position Run) | B64 |
| VPWR (Vehicle Power) | B101 |
| VPWR (Vehicle Power) | B102 |
| VPWR (Vehicle Power) | B100 |