Pinpoint Test B: Powertrain Control Module (PCM) Power Relay: Introduction: Notes

This pinpoint test is intended to diagnose the following:

Harness Circuit(s):
Vehicle Power.
Ignition Start/Run.
PCM Power Relay Ground.
Battery positive voltage.
PCM Power Relay (12A646).

Fig 1: Powertrain Control Module Power (PCMPWR) Relay Connector
Courtesy of FORD MOTOR CO.

NOTE: The IGN START/RUN and ground circuits, and/or the B+ and VPWR circuits may be reversed in the harness connector. Refer to SYSTEM WIRING DIAGRAMS for additional information.

Fig 2: Powertrain Control Module Power - 2 (PCMPWR-2) Relay Connector

Courtesy of FORD MOTOR CO.