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Home >> Ford >> 2012 >> Taurus SHO >> Repair and Diagnosis >> External Pages >> Different car >> Section 1956 (Glass, Frames And Mechanisms - Without Window One-Touch Up -- F250-F550 Super Duty) >> Diagnosis And Testing >> Glass, Frames and Mechanisms >> Pinpoint Tests >> Pinpoint Test C: A Single Power Window is Inoperative - LH Front >> Pinpoint Test C: A Single Power Window Is Inoperative - LH Front

Pinpoint Test C: A Single Power Window Is Inoperative - LH Front

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.
NOTE: If the LH front window is already in the full DOWN position, skip to pinpoint Step  C2.
  1. C1 CHECK THE LH FRONT POWER WINDOW DOWN OPERATION 
    • Ignition OFF.
    • Disconnect: LH Front Window Control Switch C504A (Crew Cab) or C535 (regular and SuperCab).
    • Ignition ON.
    • For regular or SuperCab, connect a fused jumper wire between LH front window control switch C535-7, circuit CBP01 (BU), harness side and LH window control switch C535-1, circuit CPW10 (YE/VT), harness side; and between LH front window control switch C535-5, circuit CPW11 (BU/GY), harness side and LH front window control switch C535-2, circuit GD137 (BK/WH), harness side.
      Fig 1: Connecting Fused Jumper Wire Between LH Front Window Control Switch C535-7, Circuit CBP01 (BU) And LH Window Control Switch C535-1, Circuit CPW10 (YE/VT)
      G06780599Courtesy of FORD MOTOR CO.
    • For Crew Cab, connect a fused jumper wire between LH front window control switch C504A-2, circuit CBP01 (BU), harness side and LH window control switch C504A-1, circuit CPW10 (YE/VT), harness side; and between LH front window control switch C504A-5, circuit CPW11 (BU/GY), harness side and ground.
      Fig 2: Connecting Fused Jumper Wire Between LH Front Window Control Switch C504A-2, Circuit CBP01 (BU) And LH Window Control Switch C504A-1, Circuit CPW10 (YE/VT)
      G06780600Courtesy of FORD MOTOR CO.
    • Does the LH front window move down? 
    • Yes  : REMOVE the jumper wires. GO to C2.
    • No  : REMOVE the jumper wires. GO to  C3.
  2. C2 CHECK THE LH FRONT POWER WINDOW UP OPERATION 
    • Ignition ON.
    • For regular or SuperCab, connect a fused jumper wire between LH front window control switch C535-7, circuit CBP01 (BU), harness side and LH window control switch C535-5, circuit CPW11 (BU/GY), harness side; and between LH front window control switch C535-1, circuit CPW10 (YE/VT), harness side and LH front window control switch C535-2, circuit GD137 (BK/WH), harness side.
      Fig 3: Connecting Fused Jumper Wire Between LH Front Window Control Switch C535-7, Circuit CBP01 (BU) And LH Window Control Switch C535-5, Circuit CPW11 (BU/GY)
      G06780601Courtesy of FORD MOTOR CO.
    • For Crew Cab, connect a fused jumper wire between LH front window control switch C504A-2, circuit CBP01 (BU), harness side and LH window control switch C504A-5, circuit CPW11 (BU/GY), harness side; and between LH front window control switch C504A-1, circuit CPW10 (YE/VT), harness side and ground.
      Fig 4: Connecting Fused Jumper Wire Between LH Front Window Control Switch C504A-2, Circuit CBP01 (BU) And LH Window Control Switch C504A-5, Circuit CPW11 (BU/GY)
      G06780602Courtesy of FORD MOTOR CO.
    • Does the LH front window move up? 
    • Yes  : INSTALL a new LH front window control switch. REFER to WINDOW CONTROL SWITCH .
    • No  : REMOVE the jumper wires. GO to C3.
  3. C3 CHECK WINDOW MOTOR CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: LH Front Window Motor C524.
    • Measure the resistance between LH front window motor C524-2, circuit CPW10 (YE/VT), harness side and LH front window control switch C535-1 (regular and SuperCab) or C504A-1 (Crew Cab), circuit CPW10 (YE/VT), harness side.
      Fig 5: Measuring Resistance Between LH Front Window Motor C524-2 And LH Front Window Control Switch C535-1 (Regular And SuperCab) Or C504A-1 (Crew Cab)
      G06780603Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : GO to C4.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  4. C4 CHECK WINDOW MOTOR CIRCUIT FOR AN OPEN 
    • Measure the resistance between LH front window motor C524-1, circuit CPW11 (BU/GY), harness side and LH front window control switch C535-5 (regular and SuperCab) or C504A-5 (Crew Cab), circuit CPW11 (BU/GY), harness side.
      Fig 6: Measuring Resistance Between LH Front Window Motor C524-1 And LH Front Window Control Switch C535-5 (Regular And SuperCab) Or C504A-5 (Crew Cab)
      G06780604Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : VERIFY there are no mechanical binding conditions preventing the glass mechanism from operating correctly. If a mechanical binding issue is found, REPAIR as necessary. If no mechanical binding condition exists, INSTALL a new LH front window regulator and motor. REFER to WINDOW REGULATOR AND MOTOR - FRONT DOOR . TEST the system for normal operation.
    • No  : REPAIR the circuit. TEST the system for normal operation.
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