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1996 Ford Bronco E4OD Transmission Range (TR) Sensor Wiring Diagram 30-3
Reference · 1992-1996 BroncoAll 411 wiring diagrams
E4OD transmission controls wiring diagram for 1996 Ford Bronco showing oxygen sensors and transmission range sensor circuits.
Part of 1992-1996 Ford Bronco Wiring Diagrams
This is page 30-3 of a 1996 Ford factory wiring diagram covering Transmission Controls for the E4OD automatic transmission, focused on the Transmission Range (TR) Sensor. A callout explains that the sensor uses step-down resistors as a voltage divider so the PCM can monitor manual lever position for gear selection and EPC pressure, houses the START circuits (allowing starting only in PARK or NEUTRAL), and contains the Backup Lamp and 4X4 low-neutral sense circuits that close in reverse. The diagram shows circuit 359 (GY/R) linking the TR sensor to the Powertrain Control Module (connectors C185/C1027), Heated Oxygen Sensors #21 and #12 (connectors C1069M/C1069F, with a 5.8L-only branch), and splices S137 and S146, continuing to C1048 on page 30-2. TR sensor inputs include circuit 33 W/PK from the Starting System (page 20-2), circuit 463 R/W from All-Wheel Drive (page 34-1), and circuit 298 P/O (hot in run) from Power Distribution (page 13-4) via connector C1012. Outputs include circuit 32 R/LB to the Starting System, circuit 57 BK to All-Wheel Drive, circuit 140 BK/PK to Backup Lamps (page 93-1), and circuit 199 LB/Y through connectors C103F/C103M back to the PCM. Cross-references to related pages and connector numbers are provided throughout.
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Frequently asked questions
- What does the Transmission Range (TR) sensor do on the 1996 E4OD?
- Per the diagram's note, it incorporates step-down resistors acting as a voltage divider; the PCM monitors the voltage corresponding to manual lever position to determine desired gear and EPC pressure. It also houses the START circuits so the vehicle can only start in PARK or NEUTRAL, plus the Backup Lamp and 4X4 low-neutral sense circuits, which are closed in reverse.
- What wire colors and circuits connect to the E4OD TR sensor?
- Inputs: circuit 33 W/PK (starting system), 463 R/W (all-wheel drive), 298 P/O (power distribution, hot in run), and 359 GY/R via C1012. Outputs: 32 R/LB (starting system), 57 BK (all-wheel drive), 140 BK/PK (backup lamps), and 199 LB/Y to the PCM.
- Which circuit feeds the backup lamps from the TR sensor?
- Circuit 140 BK/PK, hot in run with the lever in reverse, going to Backup Lamps on page 93-1.
- What connectors are shown between the TR sensor and the PCM?
- Circuit 199 LB/Y passes through connector C1012, then C103F/C103M, then to the PCM at connectors C185/C1027. Circuit 359 GY/R also reaches the PCM at C185/C1027.
- Is any part of this diagram engine-specific?
- Yes: a note marks one branch of circuit 359 GY/R (to a Heated Oxygen Sensor) as '5.8L ONLY'.
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