1995 Ford Bronco 5.0L Engine Controls Wiring Diagram - MAP, HO2S, PCM (24-6)

This is page 24-6 of the 1995 Ford Bronco factory wiring diagrams (EVTM), covering the Engine Controls circuit for the 5.0L engine. The diagram shows wiring between the Powertrain Control Module (PCM), the Manifold Absolute Pressure (MAP) sensor, the Data Link Connector (DLC), and the Heated Oxygen Sensor (HO2S). Circuit numbers and wire colors are labeled, including circuit 359 GY/R (signal return/reference through splice S137 and connectors C101F/C101M), circuit 358 LG/BK and 351 BR/W for the MAP sensor, circuit 89 O to the oxygen sensor signal, circuit 74 GY/LB, circuit 298 P/O feeding the HO2S heater from fuse E (15A, Hot in Run) in the engine compartment fuse box, circuit 511 LG from the turn/stop/hazard lamps (12V with brake pedal depressed), and circuit 57 BK ground to G101 via splice S100. Callout notes explain that the HO2S provides a voltage related to exhaust oxygen content for air/fuel regulation, and that the MAP sensor measures atmospheric pressure for fuel/air ratio, line pressure, and shift scheduling adjustments at altitude. Cross-references point to Power Distribution (page 13-4), E4OD Transmission (page 30-1), 4R70W Transmission (page 29-3), Turn/Stop/Hazard Lamps (page 90-2), Grounds (page 10-2), and component location views (section 151). Footnotes distinguish wiring with and without E4OD or 4R70W transmissions.