What fuses power the E4OD transmission control circuits on this diagram?

Fuse 13 (15A, hot at all times) and fuse 17 (10A, hot in start or run) in the fuse panel, referenced to Power Distribution pages 13-7 and 13-11.

What does the BOO switch do according to this diagram?

The Brake On/Off (BOO) switch sends a signal to the PCM to disengage the torque converter clutch when the brake pedal is depressed. The PCM may ignore this signal if the TP signal is above closed throttle. The switch is closed with the brake pedal depressed.

What is the Transmission Control Switch (TCS)?

It is a momentary contact switch that signals the PCM to allow automatic shifts from 1st through 4th or from 1st through 3rd gears. It includes the TCIL lamp and receives power on circuit 640 R/W (start or run).

What does it mean when the TCIL flashes?

The lamp indicates that 4th gear has been disengaged, and it may also flash if monitored sensors/actuators or circuits have failed.

Which PCM pins are used in this circuit?

PCM pins 32, 29, and 79, with circuits including 511 LG, 224 T/W, and 911 W/LG. The PCM is covered further on pages 24-3, 24-6, 25-2, and 25-8.

Home/ Registry/ Ford/ Bronco/ 1992-1996/ “Buckin Bronco”/ Photo supermotors.net/registry/media/1110728

1996 Ford Bronco E4OD Transmission Controls Wiring Diagram - BOO Switch & TCS

96 Bronco 30-1 Transmission Controls (E4OD) wiring diagram: BOO switch, transmission control switch, turn/hazard lamps, PCM

‹ ›

E4OD transmission controls wiring diagram for 1996 Ford Bronco showing BOO switch and transmission control switch circuits.

AI caption July 2017 · Photo 248 of 386

This is page 30-1 of a factory-style wiring diagram set covering Transmission Controls for the E4OD automatic transmission, marked '96' (1996). It shows the electrical circuits for the Brake On/Off (BOO) switch and the Transmission Control Switch (TCS) with its Transmission Control Indicator Lamp (TCIL), and how these feed the Powertrain Control Module (PCM). Power comes from the fuse panel: fuse 13 (15A, hot at all times) and fuse 17 (10A, hot in start or run), with references to Power Distribution pages 13-7 and 13-11. Wire circuits shown include 383 R/W (red/white), 10 LG/R, 511 LG through the BOO switch, 640 R/W to the TCS, 911 W/LG through connectors C275M/C275F and C202F/C202M, and 224 T/W to PCM pins 32, 29, and 79. Callout notes explain that the BOO switch signals the PCM to disengage the torque converter clutch when the brake pedal is depressed; the TCS is a momentary contact switch allowing shifts from 1st through 4th or 1st through 3rd gears; and the TCIL indicates 4th gear disengagement or flashes on monitored sensor/actuator faults. Cross-references point to Turn/Stop/Hazard Lamps (pages 90-1, 90-2) and PCM pages 24-3, 24-6, 25-2, 25-8.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What fuses power the E4OD transmission control circuits on this diagram?: Fuse 13 (15A, hot at all times) and fuse 17 (10A, hot in start or run) in the fuse panel, referenced to Power Distribution pages 13-7 and 13-11.
What does the BOO switch do according to this diagram?: The Brake On/Off (BOO) switch sends a signal to the PCM to disengage the torque converter clutch when the brake pedal is depressed. The PCM may ignore this signal if the TP signal is above closed throttle. The switch is closed with the brake pedal depressed.
What is the Transmission Control Switch (TCS)?: It is a momentary contact switch that signals the PCM to allow automatic shifts from 1st through 4th or from 1st through 3rd gears. It includes the TCIL lamp and receives power on circuit 640 R/W (start or run).
What does it mean when the TCIL flashes?: The lamp indicates that 4th gear has been disengaged, and it may also flash if monitored sensors/actuators or circuits have failed.
Which PCM pins are used in this circuit?: PCM pins 32, 29, and 79, with circuits including 511 LG, 224 T/W, and 911 W/LG. The PCM is covered further on pages 24-3, 24-6, 25-2, and 25-8.