Ford Crown Victoria PCM Power, Ground & BOO Switch Wiring Diagram (Gasoline)

This document is a Ford gasoline-engine powertrain control module (PCM) power, ground, and relay wiring diagram. It shows three power feeds: a 25A instrument panel fuse (Hot in Start or Run) feeding circuit 16 R/LG through connectors C102F/C102M to the PCM power diode and PCM power relay; a 20A EEC fuse in the engine compartment fuse box (Hot at All Times) feeding circuit 554 V/BK to the Data Link Connector, relay center, and PCM power relay; and a 15A fuse feeding circuit 10 LG/R to the Brake On/Off (BOO) switch, which sends circuit 511 LG to PCM pin 32 when the brake pedal is depressed (used to disengage the torque converter clutch). The diagram also shows the A/C WOT cutout relay in the relay center with circuits 198 DG/O, 347 BK/Y, and 73 O/LB tied to the air conditioner/heater or EATC systems and PCM pins 73 and 63. Grounding is shown via circuit 570 BK/W from PCM pins 24, 51, 76, 77, and 103 through splices S114, S141, and S106 to grounds G102 and G101, plus circuit 57 BK from pin 25. Cross-references point to power distribution pages 13-5, 13-8, 13-10, 13-12, grounds pages 10-1 and 10-4, and A/C pages 54-3/55-3.