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Pinpoint Test D: A Single Power Window Is Inoperative - LH Rear Window

NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. D1 CHECK THE LEFT REAR WINDOW OPERATION FROM THE LH FRONT WINDOW CONTROL SWITCH 
    • Ignition ON.
    • Operate the LH rear window from the LH front window control switch.
    • Does the LH rear window operate from the LH front window control switch? 
      • Yes  : GO to D2.
      • No  : GO to  D3.
  2. D2 CHECK CIRCUIT CPW14 (VT/WH) FOR VOLTAGE 
    • Ignition OFF.
    • Disconnect: LH Rear Window Control Switch C701.
    • Ignition ON.
    • NOTE: Set the LH window control switch to the UNLOCK position.

      Measure the voltage between LH rear window control switch C701-3, circuit CPW14 (VT/WH), harness side and ground.

      Fig 1: Measuring Voltage Between LH Rear Window Control Switch C701-3, Circuit CPW14 (VT/WH) And Ground
      G07805440Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : INSTALL a new LH rear window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  3. D3 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR VOLTAGE AND GROUND 
    • Ignition OFF.
    • Disconnect: LH Rear Window Motor C703.
    • Ignition ON.
    • Measure the voltage between LH rear window motor C703-2, circuit CPW23 (GY), harness side and LH rear window motor C703-1, circuit CPW24 (WH/VT), harness side while operating the LH rear window control switch in the DOWN then UP positions.
      Fig 2: Checking Circuits CPW23 (GY) And CPW24 (WH/VT) For Voltage And Ground
      G07805441Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts when the switch is in the DOWN position; and greater than -10 volts when the switch is in the UP position? 
  4. D4 CHECK THE LH REAR WINDOW CONTROL SWITCH 
    • Ignition OFF.
    • Disconnect: LH Rear Window Control Switch C701.
    • Carry out the window control switch component test on the LH rear window control switch.

      Refer to COMPONENT TESTING article for component testing.

    • Did the LH rear window control switch pass the component test? 
      • Yes  : GO to D5.
      • No  : INSTALL a new LH rear window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation.
  5. D5 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR AN OPEN 
    • Measure the resistance between LH rear window control switch C701, harness side and LH rear window motor C703, harness side using the following chart:
      LH Rear Window Control Switch Circuit LH Rear Window Motor
      C701-5 CPW24 (WH/VT) C703-1
      C701-2 CPW23 (GY) C703-2
      Fig 3: Checking Circuits CPW23 (GY) And CPW24 (WH/VT) For Open
      G07805442Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
      • Yes  : GO to D6.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  6. D6 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR A SHORT TO GROUND 
    • Measure the resistance between LH rear window control switch C701-5, circuit CPW24 (WH/VT), harness side and ground; and between LH rear window control switch C701-2, circuit CPW23 (GY), harness side and ground.
      Fig 4: Checking Circuits CPW23 (GY) And CPW24 (WH/VT) For Short To Ground
      G07805443Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000? 
      • Yes  : GO to D7.
      • No  : REPAIR the circuit(s) in question. TEST the system for normal operation.
  7. D7 CHECK CIRCUITS CPW15 (YE)/CPW17 (BN/GN) AND CPW16 (BU/OG)/CPW18 (GY/VT) FOR AN OPEN 
    • Disconnect: LH Front Window Control Switch C504B.
    • Measure the resistance between LH front window control switch C504B, harness side and LH rear window control switch C701, harness side using the following chart:
      LH Front Window Control Switch Circuit LH Rear Window Motor
      C504B-1 CPW15 (YE)/CPW17 (BN/GN) C701-1
      C504B-6 CPW16 (BU/OG)/CPW18 (GY/VT) C701-6
      Fig 5: Checking Circuits CPW15 (YE)/CPW17 (BN/GN) And CPW16 (BU/OG)/CPW18 (GY/VT) For Open
      G07805444Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
      • Yes  : GO to D8.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  8. D8 CHECK CIRCUITS CPW17 (BN/GN) AND CPW18 (GY/VT) FOR A SHORT TO GROUND 
    • Measure the resistance between LH rear window control switch C701-1, circuit CPW17 (BN/GN), harness side and ground; and between LH rear window control switch C701-6, circuit CPW18 (GY/VT), harness side and ground.
      Fig 6: Checking Circuits CPW17 (BN/GN) And CPW18 (GY/VT) For Short To Ground
      G07805445Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
      • Yes  : INSTALL a new LH front window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
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