2021 Ford F-150 RaptorFACTORY OEM SERVICE PROCEDURE

Pinpoint Tests AJ: Powertrain Control Module (PCM) Power Relay: Introduction

NOTE: Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.

This pinpoint test is intended to diagnose the following:

  • harness circuits: B+, ISP-R, PCMRC, VPWR and PWRGND
  • PCM power relay (12A646)
  • PCM (12A650)
Fig 1: PCM Power Relay Connector
G06054163Courtesy of FORD MOTOR CO.
Pin Circuit
5 VPWR (Vehicle Power)
2 PCMRC (PCM Relay Control)
1, 3 B+ (Battery Positive Voltage)
Fig 2: Powertrain Control Module-B (PCM-B) Connector
G13711584Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
F-150 A 47, 61, 62, 76, 77
67, 68, 69
21
50		 PWRGND
VPWR
ISP-R
PCMRC
Transit Connect B 96, 97, 98
101, 102, 103
82
42		 VPWR
ISP-R
PCMRC
All other vehicles A 47, 61, 62, 76, 77
1, 16, 17, 2
21
50		 PWRGND
VPWR
ISP-R
PCMRC
Fig 3: Battery Junction Box-B (BJB-B) Connector
G12083819Courtesy of FORD MOTOR CO.
Pin Circuit
46 VPWR (Vehicle Power)
Fig 4: Battery Junction Box-C (BJB-C) Connector
G12083820Courtesy of FORD MOTOR CO.
Pin Circuit
20 PCMRC (PCM Relay Control)
Fig 5: Battery Junction Box-A (BJB-A) Connector
G13711587Courtesy of FORD MOTOR CO.
Pin Circuit
51 VPWR (Vehicle Power)
39 PCMRC (PCM Relay Control)
Fig 6: Battery Junction Box-G (BJB-G) Connector
G12083819Courtesy of FORD MOTOR CO.
Pin Circuit
34 VPWR (Vehicle Power)
Fig 7: Battery Junction Box-H (BJB-H) Connector
G12083820Courtesy of FORD MOTOR CO.
Pin Circuit
18 PCMRC (PCM Relay Control)
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