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Home >> Ford >> 2012 >> Mustang Boss 302 >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Glass, Frames And Mechanisms - Without Window One-Touch Up -- F250-F550 Super Duty) >> Diagnosis And Testing >> Glass, Frames and Mechanisms >> Pinpoint Tests >> Pinpoint Test B: All Power Windows are Inoperative >> Pinpoint Test B: All Power Windows Are Inoperative

Pinpoint Test B: All Power Windows Are Inoperative

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. B1 CHECK VOLTAGE TO LH FRONT WINDOW CONTROL SWITCH 
    • Disconnect: LH Front Window Control Switch C504A (Crew Cab) or C535 (regular and SuperCab).
    • Ignition ON.
    • Measure the voltage between LH front window control switch C504A-2(Crew Cab) or C535-7(regular and SuperCab), circuit CBP01 (BU), harness side and ground.
      Fig 1: Measuring Voltage Between LH Front Window Control Switch C504A-2 (Crew Cab) Or C535-7 (Regular And SuperCab), Circuit CBP01 (BU) And Ground
      G06780596Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to  B3.
    • No  : VERIFY BCM circuit breaker 48 (30A) is OK. If OK, GO to B2.

      If not OK, REFER to the appropriate WIRING DIAGRAMS article to identify the possible causes of the circuit short.

  2. B2 CHECK THE LH FRONT WINDOW CONTROL SWITCH POWER CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: BCM C2280D.
    • Measure the resistance between LH front window control switch C504A-2(Crew Cab) or C535-7(regular and SuperCab), circuit CBP01 (BU), harness side and BCM C2280D-27, circuit CBP01 (BU), harness side.
      Fig 2: Measuring Resistance Between LH Front Window Control Switch C504A-2(Crew Cab) Or C535-7(Regular And SuperCab), Circuit CBP01 (BU) And BCM C2280D-27, Circuit CBP01 (BU)
      G07485969Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to PINPOINT TEST F  to DIAGNOSE the accessory delay relay system.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK THE LH FRONT WINDOW CONTROL SWITCH GROUND 
    • Ignition OFF.
    • Measure the resistance between LH front window control switch C504B-7(Crew Cab) or C535-2(regular and SuperCab), circuit GD137 (BK/WH), harness side and ground.
      Fig 3: Measuring Resistance Between LH Front Window Control Switch C504B-7 (Crew Cab) Or C535-2 (Regular And SuperCab), Circuit GD137 (BK/WH) And Ground
      G06780598Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : INSTALL a new LH front window control switch. REFER to WINDOW CONTROL SWITCH .
    • No  : REPAIR the circuit. TEST the system for normal operation.
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