What connector does this PCM pinout diagram cover?

It covers the 104-pin Powertrain Control Module (PCM) connector, identified in the document as C191, with every pin's circuit number, wire color, and function listed.

Which PCM pin is Keep Alive Power (B+)?

Pin 55, circuit 1076 (DG/O), is Keep Alive Power (B+). Main VPWR power is on pins 71 and 97, circuit 361 (R).

Which pins control the fuel injectors?

Injector controls: pin 75 = #1 (555, T), pin 101 = #2 (556, W), pin 73 = #3 (559, T/BK), pin 100 = #4 (558, BR/LB), pin 99 = #6 (560, LG/O), pin 72 = #7 (561, T/R), pin 98 = #8 (562, LB), and pin 74 (557, BR/Y) is also printed as Fuel Injector #3 Control.

Where are the Coil Per Plug (CPP) outputs on this PCM?

CPP #1 = pin 26 (1024, LG/W), #2 = pin 104 (1026, LG/W), #3 = pin 27 (1028, W/PK), #4 = pin 78 (1030, DG/P), #5 = pin 52 (1021, LG/Y), #6 = pin 1 (1025, O/Y), #7 = pin 53 (1027, PK/LB), #8 = pin 79 (1029, W/R).

Which pins are the heated oxygen sensor inputs?

HO2S #11 input = pin 60 (74, GY/LB); HO2S #12 (catalyst monitor) = pin 35 (94, R/BK); HO2S #21 = pin 87 (392, R/LG); HO2S #22 (catalyst monitor) = pin 61 (398, P/LG). Heaters are on pins 93–96.

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1997 Ford Taurus SHO 3.4L V8 PCM Pinout Diagram - 104-Pin Connector C191

Ford PCM connector pinout chart: 104-pin powertrain control module pin/circuit/function table

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Powertrain Control Module (PCM) connector pinout listing each pin number, wire circuit color, and circuit function (ECT, IAT, MAF, injectors, COP coils, EGR, knock sensor, fuel pump) for diagnostic breakout.

AI caption May 2007 · Photo 278 of 579

This document is a complete pinout reference for a Ford Powertrain Control Module (PCM) 104-pin connector, identified as connector C191. The top of the page shows an illustration of the connector with all 104 cavities numbered and labeled with circuit numbers and wire color codes. Below, two tables list every pin (1–104) with its circuit number, wire color abbreviation, and circuit function. Functions covered include eight Coil Per Plug (CPP) outputs (#1–#8), eight fuel injector control circuits (#1–#8), power grounds, VPWR power feeds, Keep Alive Power (B+), sensor inputs (ECT, IAT, MAF, TP, CKP, CMP, VSS, TSS, TFT, DPFE, knock sensors #1 and #2, fuel tank pressure), four heated oxygen sensor inputs and heaters (HO2S #11, #12, #21, #22 including catalyst monitor circuits), transmission controls (shift solenoids #1–#3, EPC, TCC, TR sensor, TCIL), relay controls (fuel pump, HEDF, WAC, EAM solid state relay, Constant Control Relay Module), IMRC, EVR/EGR, EVAP purge and canister vent, Data Link Connector bus lines, SARC (Semi-Active Ride Control), power steering pressure switch, octane adjust shorting bar, and brake on/off input. Unused pins are explicitly marked NOT USED. The eight-coil/eight-injector layout indicates an 8-cylinder application, consistent with the 1997 Taurus SHO 3.4L V8.

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Frequently asked questions

What connector does this PCM pinout diagram cover?: It covers the 104-pin Powertrain Control Module (PCM) connector, identified in the document as C191, with every pin's circuit number, wire color, and function listed.
Which PCM pin is Keep Alive Power (B+)?: Pin 55, circuit 1076 (DG/O), is Keep Alive Power (B+). Main VPWR power is on pins 71 and 97, circuit 361 (R).
Which pins control the fuel injectors?: Injector controls: pin 75 = #1 (555, T), pin 101 = #2 (556, W), pin 73 = #3 (559, T/BK), pin 100 = #4 (558, BR/LB), pin 99 = #6 (560, LG/O), pin 72 = #7 (561, T/R), pin 98 = #8 (562, LB), and pin 74 (557, BR/Y) is also printed as Fuel Injector #3 Control.
Where are the Coil Per Plug (CPP) outputs on this PCM?: CPP #1 = pin 26 (1024, LG/W), #2 = pin 104 (1026, LG/W), #3 = pin 27 (1028, W/PK), #4 = pin 78 (1030, DG/P), #5 = pin 52 (1021, LG/Y), #6 = pin 1 (1025, O/Y), #7 = pin 53 (1027, PK/LB), #8 = pin 79 (1029, W/R).
Which pins are the heated oxygen sensor inputs?: HO2S #11 input = pin 60 (74, GY/LB); HO2S #12 (catalyst monitor) = pin 35 (94, R/BK); HO2S #21 = pin 87 (392, R/LG); HO2S #22 (catalyst monitor) = pin 61 (398, P/LG). Heaters are on pins 93–96.