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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1548 (Windows And Glass - Glass, Frames And Mechanisms) >> Diagnosis And Testing >> Glass, Frames and Mechanisms >> Pinpoint Tests >> Pinpoint Test E: A Single Power Window is Inoperative - RH Rear Window >> Pinpoint Test E: A Single Power Window Is Inoperative - RH Rear Window

Pinpoint Test E: A Single Power Window Is Inoperative - RH Rear Window

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
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. E1 CHECK THE RH REAR WINDOW OPERATION FROM THE LH FRONT WINDOW CONTROL SWITCH 
    • Ignition ON.
    • Operate the RH rear window from the LH front window control switch.
    • Does the RH rear window operate from the LH front window control switch? 
    • Yes:  GO to E2  .
    • No:  GO to  E3.
  2. E2 CHECK CIRCUIT CPW14 (VT/WH) FOR VOLTAGE 
    • Ignition OFF.
    • Disconnect: RH Rear Window Control Switch C801.
    • Ignition ON.
    • Measure the voltage between RH rear window control switch C801-3, circuit CPW14 (VT/WH), harness side and ground.
      Fig 1: Measuring Voltage Between RH Rear Window Control Switch C801-3, Circuit CPW14 (VT/WH), Harness Side And Ground
      G06099715Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  INSTALL a new RH 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. E3 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR VOLTAGE AND GROUND 
    • Ignition OFF.
    • Disconnect: RH Rear Window Motor C803.
    • Ignition ON.
    • Measure the voltage between RH rear window motor C803-2, circuit CPW23 (GY), harness side and RH rear window motor C803-1, circuit CPW24 (WH/VT), harness side while operating the RH rear window control switch in the DOWN then UP positions.
      Fig 2: Checking Circuits CPW20 (WH/OG) And CPW19 (VT) For Voltage And Ground
      G06099713Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts in both switch directions? 
    • Yes:  INSTALL a new window regulator and motor. REFER to WINDOW REGULATOR - REAR DOOR . TEST the system for normal operation.
    • No:  GO to E4  .
  4. E4 CHECK THE RH REAR WINDOW CONTROL SWITCH 
    • Ignition OFF.
    • Disconnect: RH Rear Window Control Switch C801.
    • Carry out the window control switch component test on the RH rear window control switch.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article for component testing.

    • Did the RH rear window control switch pass the component test? 
    • Yes:  GO to E5  .
    • No:  INSTALL a new RH rear window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation.
  5. E5 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR AN OPEN 
    • Measure the resistance between RH rear window control switch, harness side, and RH rear window motor, harness side using the following chart:
      RH REAR WINDOW CONTROL SWITCH REFERENCE

      RH Rear Window Control Switch Circuit RH Rear Window Motor
      C801-5 CPW24 (WH/VT) C803-1
      C801-2 CPW23 (GY) C803-2
      Fig 3: Checking Circuits CPW20 (WH/OG) And CPW19 (VT) For An Open
      G06099717Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes:  GO to E6  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  6. E6 CHECK CIRCUITS CPW23 (GY) AND CPW24 (WH/VT) FOR A SHORT TO GROUND 
    • Measure the resistance between RH rear window control switch C801-5, circuit CPW24 (WH/VT), harness side and ground; and between RH rear window control switch C801-2, circuit CPW23 (GY), harness side and ground.
      Fig 4: Measuring Resistance Between RH Front Window Control Switch C604-5, Circuit CPW20 (WH/OG), Harness Side And Ground
      G06099719Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes:  GO to E7  .
    • No:  REPAIR the circuit(s) in question. TEST the system for normal operation.
  7. E7 CHECK CIRCUITS CPW17 (BN/GN) AND CPW18 (GY/VT) FOR AN OPEN 
    • Disconnect: LH Front Window Control Switch C504B.
    • Measure the resistance between LH front window control switch, harness side and RH rear window control switch, harness side using the following chart:
      LH FRONT WINDOW CONTROL SWITCH REFERENCE

      LH Front Window Control Switch Circuit RH Rear Window Control Switch
      C504B-4 CPW17 (BN/GN) C801-1
      C504B-8 CPW18 (GY/VT) C801-6
      Fig 5: Checking Circuits CPW17 (BN/GN) And CPW18 (GY/VT) For An Open
      G06099732Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes:  GO to E8  .
    • No:  REPAIR the circuit. TEST the system for normal operation.
  8. E8 CHECK CIRCUITS CPW17 (BN/GN) AND CPW18 (GY/VT) FOR A SHORT TO GROUND 
    • Measure the resistance between RH rear window control switch C801-1, circuit CPW17 (BN/GN), harness side and ground; and between RH rear window control switch C801-6, circuit CPW18 (GY/VT), harness side and ground.
      Fig 6: Measuring Resistance Between RH Front Window Control Switch C604-1, Circuit CPW12 (GN/OG), Harness Side And Ground
      G06099721Courtesy 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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