What wire colors does the 1994 Bronco vehicle speed sensor (acceleration sensor) use?

The sensor circuits are 886 O/BK (orange/black), 887 Y (yellow), and 863 O/W (orange/white), running through connectors C402, C205, C202 and C119 to the 4WABS Control Module.

Which fuses power the 1994 Bronco speedometer/odometer (PSOM) circuit?

Fuse 8 (15A, hot at all times) feeds circuit 54 LG/Y, and fuse 18 (10A, hot in run) feeds circuit 296 W/P to the Programmable Speedometer/Odometer Module.

What wire carries the speed signal from the PSOM to the PCM and cruise control?

Circuit 679 GY/BK (gray/black) runs from the PSOM through splice S246 to the Powertrain Control Module (via C185) and the Speed Control Servo/Amplifier Assembly (via C216).

How does the 1994 Bronco rear axle speed sensor work?

It monitors rear axle speed by sensing teeth on an exciter ring mounted on the ring gear. As teeth pass the sensor pole piece, an AC voltage with a frequency proportional to average rear wheel speed is induced, and the signal is sent to the PSOM, 4WABS, and PCM modules.

Where are the grounds for the vehicle speed sensor circuit?

Circuit 57 BK goes to ground G100 (see page 10-16), and circuit 570 BK/W goes to ground G200 (see page 10-10).

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1994 Ford Bronco Vehicle Speed Sensor Wiring Diagram - EVTM Page 64-2 PSOM VSS

1994 Bronco/F-Series Vehicle Speed Sensor wiring diagram with color-coded circuits

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Wiring diagram for the 1994 Bronco/F-Series vehicle speed sensor circuit with color-coded wires and connector references.

AI caption February 2020 · Photo 2994 of 3001

This is page 64-2 of the 1994 Ford Bronco/F-Series Electrical & Vacuum Troubleshooting Manual (EVTM), showing the Vehicle Speed Sensor circuit for the Bronco. The diagram traces the solid-state Acceleration Sensor (rear axle speed sensor) through circuits 886 (O/BK), 887 (Y), and 863 (O/W) to the 4WABS Control Module, and circuit 530 (LG/Y) and 491 (O/LB) to the Programmable Speedometer/Odometer Module (PSOM) in the instrument cluster. Power is supplied from the fuse panel: fuse 8 (15A, hot at all times) via circuit 54 LG/Y, and fuse 18 (10A, hot in run) via circuit 296 W/P. The PSOM outputs speed signal 679 GY/BK to the Powertrain Control Module (PCM) and Speed Control Servo/Amplifier Assembly, plus circuits 567 LB/Y (PSOM programming connector), 676 PK/O, 901 R/LB, and grounds 57 BK (G100) and 570 BK/W (G200). A sidebar explains that the sensor monitors rear axle speed via exciter ring teeth, producing an AC voltage proportional to average rear wheel speed for the PSOM, 4WABS, and PCM. A connector reference table cross-references connectors C119, C185, C216, C252, C277, and C1027 to their cell locations, with pointers to related pages for power distribution, grounds, and module details.

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Frequently asked questions

What wire colors does the 1994 Bronco vehicle speed sensor (acceleration sensor) use?: The sensor circuits are 886 O/BK (orange/black), 887 Y (yellow), and 863 O/W (orange/white), running through connectors C402, C205, C202 and C119 to the 4WABS Control Module.
Which fuses power the 1994 Bronco speedometer/odometer (PSOM) circuit?: Fuse 8 (15A, hot at all times) feeds circuit 54 LG/Y, and fuse 18 (10A, hot in run) feeds circuit 296 W/P to the Programmable Speedometer/Odometer Module.
What wire carries the speed signal from the PSOM to the PCM and cruise control?: Circuit 679 GY/BK (gray/black) runs from the PSOM through splice S246 to the Powertrain Control Module (via C185) and the Speed Control Servo/Amplifier Assembly (via C216).
How does the 1994 Bronco rear axle speed sensor work?: It monitors rear axle speed by sensing teeth on an exciter ring mounted on the ring gear. As teeth pass the sensor pole piece, an AC voltage with a frequency proportional to average rear wheel speed is induced, and the signal is sent to the PSOM, 4WABS, and PCM modules.
Where are the grounds for the vehicle speed sensor circuit?: Circuit 57 BK goes to ground G100 (see page 10-16), and circuit 570 BK/W goes to ground G200 (see page 10-10).