What circuit and wire color feeds power to the 5.8L fuel injectors?

Circuit 361, a red (R) wire that is 12V with the relay energized, feeds the fuel injectors and the other engine control solenoids.

Which PCM circuits control the fuel injectors on the 5.8L?

Injector control circuits are 556 (White) and 555 (Tan), going to PCM pins 59 and 58. Injectors use connectors C190 through C197.

What does the Idle Air Control valve do according to this diagram?

It controls idle speed during all modes of engine operation. Duty cycles are sent by the PCM, which controls a solenoid that opens or closes an air bypass depending on the signal received. It uses connector C1007.

What wire colors go from the PCM to the E4OD transmission?

Circuits 925 W/Y, 315 P/O, 237 O/Y, 924 O/BK, 923 BR/O, 480 P/Y, 199 LB/Y, 911 W/LG, and 224 T/W run to the E4OD transmission (see pages 30-1 and 30-2).

What circuit controls the canister purge solenoid?

Circuit 101, a gray/yellow (GY/Y) wire, runs from the canister purge solenoid (connector C171) to PCM pin 31. The PCM grounds the solenoid to release fuel vapors collected by the carbon canister into the engine.

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1996 Ford Bronco 5.8L Engine Controls Wiring Diagram - PCM, Injectors, IAC

Engine Controls wiring diagram, 5.8L, page 25-2, air injection, canister purge, idle air control and fuel injectors

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Ford 5.8L engine controls wiring diagram of secondary air injection, canister purge, idle air control and fuel injector circuits.

AI caption August 2018 · Photo 374 of 386

This document is page 25-2 of a factory-style wiring diagram set covering Engine Controls for the 5.8L engine, filed under a 1996 Ford Bronco. It shows the Powertrain Control Module (PCM, labeled 'solid state') and its wiring to major engine control components: the Secondary Air Injection Bypass (AIRB) solenoid (connector C1022), Secondary Air Injection Diverter (AIRD) solenoid (C1023), Canister Purge solenoid (C171), Idle Air Control valve (C1007), and eight fuel injectors (connectors C190–C197). Power is supplied on circuit 361 (Red, 12V relay energized), while control circuits include 190 W/O, 200 BR, 101 GY/Y, 264 W/LB, 556 W, and 555 T, routed to numbered PCM pins (51, 11, 31, 21, 59, 58). Explanatory callouts describe each component's function, e.g., the IAC valve controls idle speed via PCM duty cycles, and injectors are PCM-controlled and mounted at each intake port. The bottom of the page cross-references related diagrams: circuit 784 LB/BK to All-Wheel Drive (page 34-3), circuits 676 PK/O and 679 GY/BK to the Vehicle Speed Sensor (pages 64-1, 64-2), and nine circuits (925, 315, 237, 924, 923, 480, 199, 911, 224 with wire colors) to the E4OD transmission (pages 30-1, 30-2). Splice points S149, S151, S159, S160 and connectors C101/C185 are also shown.

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Frequently asked questions

What circuit and wire color feeds power to the 5.8L fuel injectors?: Circuit 361, a red (R) wire that is 12V with the relay energized, feeds the fuel injectors and the other engine control solenoids.
Which PCM circuits control the fuel injectors on the 5.8L?: Injector control circuits are 556 (White) and 555 (Tan), going to PCM pins 59 and 58. Injectors use connectors C190 through C197.
What does the Idle Air Control valve do according to this diagram?: It controls idle speed during all modes of engine operation. Duty cycles are sent by the PCM, which controls a solenoid that opens or closes an air bypass depending on the signal received. It uses connector C1007.
What wire colors go from the PCM to the E4OD transmission?: Circuits 925 W/Y, 315 P/O, 237 O/Y, 924 O/BK, 923 BR/O, 480 P/Y, 199 LB/Y, 911 W/LG, and 224 T/W run to the E4OD transmission (see pages 30-1 and 30-2).
What circuit controls the canister purge solenoid?: Circuit 101, a gray/yellow (GY/Y) wire, runs from the canister purge solenoid (connector C171) to PCM pin 31. The PCM grounds the solenoid to release fuel vapors collected by the carbon canister into the engine.