Pinpoint Test B: Powertrain Control Module (Pcm) Power Relay: Introduction
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Mercury Grand Marquis, and 2009 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The IGN START/RUN and ground circuits, or the B+ and VPWR circuits may be reversed in the harness connector. Refer to the appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
This pinpoint test is intended to diagnose the following:
- harness circuits: B+, IGN START/RUN, INJPWRM, ISP-R, PCMRC, VPWR and GND
- PCM power relay (12A646)
- PCM (12A650)
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Crown Victoria, Grand Marquis, Ranger, Town Car |
170 Pin | B35, B36 | VPWR |
| E-Series 6.8L, F-Super Duty |
170 Pin | E23 B35, B36 B31 B37 |
INJPWRM VPWR ISP-R PCMRC |
| Edge, Flex, MKS, MKX, Sable, Taurus, Taurus X |
190-Pin | B33 B51, B52, B53 B7 B8 |
INJPWRM VPWR ISP-R PCMRC |
| Explorer, Explorer Sport Trac, Mountaineer |
170 Pin | B35, B36 B46 B37 |
VPWR ISP-R PCMRC |
| F-150 2V 4.6L | 190-Pin | B67, B68 B17 B40 |
VPWR ISP-R PCMRC |
| Fusion, Milan, MKZ |
140 Pin | B45 B51, B52 B37 B35 |
INJPWRM VPWR ISP-R PCMRC |
| Mustang | 170 Pin | E23 B35, B36 B46 B37 |
INJPWRM VPWR ISP-R PCMRC |
| All other vehicles | 190-Pin | B21 B67, B68 B42 B38 |
INJPWRM VPWR ISP-R PCMRC |