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1994 Ford Bronco/F-Series A/C Clutch Wiring Diagram - Cycling & Cutout Switches
Reference · 1992-1996 BroncoAll 411 wiring diagrams
1994 Bronco/F-Series gasoline A/C-heater control wiring diagram showing the control assembly, A/C cycling and high-pressure cut-out switches, and A/C clutch field coil with pressure thresholds.
Part of 1992-1996 Ford Bronco Wiring Diagrams
This is a page from a 1994 Ford Bronco/F-Series (gasoline) wiring diagram covering the A/C compressor clutch control circuit. Power originates at fuse 6 (15A) in the fuse panel, hot in ACC or RUN, feeding circuit 182 BR/W to the A/C-Heater Control Assembly (mode positions OFF, MAX, A/C NORM, VENT, FLOOR, FLR/DEF, DEFROST). From the switch, circuit 348 P routes through connectors C296, C203, splice S153, and C162 to the A/C Clutch Cycling Pressure Switch (opens at/below 169 kPa / 24.5 psi, closes at/above 293 kPa / 43.5 psi), then via circuit 347 BK/Y to the A/C High Pressure Cut Out Switch (normally open at or above 445 ±15 psi, closed at/below 260 ±30 psi). Circuit 883 PK/LB connects the Powertrain Control Module (pins 43 and 10, though noted as "NOT USED WITH BRONCO, LIGHTNING OR W/E4OD & 4R70W") and continues via splice S127 and circuit 321 GY/W to the A/C Clutch Diode and A/C Clutch Field Coil. Grounds run via circuit 57 BK through C101, with circuit 398 BK/Y to the Instrument Cluster. Cross-references include Power Distribution page 13-19, switch testing page 149-7, PCM pages 23-5/24-7/25-5/26-4, and grounds page 10-5.
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Frequently asked questions
- What fuse powers the A/C clutch circuit on a 1994 Bronco/F-Series?
- Fuse 6, a 15A fuse in the fuse panel, hot in ACC or RUN, feeding circuit 182 BR/W (see Power Distribution page 13-19).
- At what pressures does the A/C clutch cycling pressure switch operate?
- It is normally open at or below 169 kPa (24.5 psi) and closed at or above 293 kPa (43.5 psi).
- What are the operating pressures of the A/C high pressure cut out switch?
- It is normally open at or above 445 ±15 psi and normally closed at or below 260 ±30 psi.
- What wire colors and circuit numbers feed the A/C clutch field coil?
- Circuit 883 PK/LB runs to splice S127, then circuit 321 GY/W through connector C163 to the A/C clutch field coil; ground is circuit 57 BK through C101.
- Does the PCM control the A/C clutch on this circuit for the Bronco?
- The diagram notes the PCM connection (pins 43 and 10 via C185, circuit 883 PK/LB) is 'NOT USED WITH BRONCO, LIGHTNING OR W/E4OD & 4R70W'.
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