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Pinpoint Test E : One Or Both Rear Power Windows Are Inoperative - Navigator

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. 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 CIRCUIT CBP48 (GY/YE) FOR VOLTAGE

    • Disconnect: Master Window Control Switch C535B.
    • Ignition ON.
    • Measure the voltage between master window control switch C535B-3 , circuit CBP48 (GY/YE), harness side and ground.
    1. GFD137669Courtesy of FORD MOTOR COMPANY

    Is the voltage greater than 11 volts? 

    Yes  GO to  E2.
    No  VERIFY the BCM circuit breaker 48 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. If not OK, REFER to the OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short. REPAIR the circuit. TEST the system for normal operation.

  2. E2 CHECK THE VOLTAGE TO THE LR OR RR WINDOW CONTROL SWITCH

    • Connect: Master Window Control Switch C535B.
    • Disconnect: Inoperative Rear Window Control Switch C701 (LR) or C801 (RR).
    • Ignition ON.
    • NOTE: Set the window lock-out switch to the UNLOCK position.

      Measure the voltage between the inoperative rear window control switch connector and ground.

      • For an inoperative LR window, measure the voltage between LR window control switch C701-3 , circuit CPW30 (GY/YE), harness side and ground.
      • For an inoperative RR window, measure the voltage between RR window control switch C801-3 , circuit CPW30 (GY/YE), harness side and ground.
    1. GFD137661Courtesy of FORD MOTOR COMPANY

    Is the voltage greater than 11 volts? 

    Yes  GO to  E3.
    No  REPAIR the circuit. TEST the system for normal operation.

  3. E3 CHECK THE GROUNDS TO THE INOPERATIVE REAR WINDOW CONTROL SWITCH

    • Ignition OFF.
    • Measure the resistance between the inoperative window control switch and ground.
      • For an inoperative LR window, measure the resistance between LR window control switch C701-1 , circuit CPW17 (BN/GN), harness side and ground; and between C701-6 , circuit CPW18 (GY/VT), harness side and ground.
      • For an inoperative RR window, measure the resistance between RR window control switch C801-1 , circuit CPW17 (BN/GN), harness side and ground; and between C801-6 , circuit CPW18 (GY/VT), harness side and ground.
    1. GFD137662Courtesy of FORD MOTOR COMPANY

    Is the resistance less than 3 ohms? 

    Yes  GO to  E5.
    No  GO to  E4.

  4. E4 CHECK THE CIRCUITS TO THE INOPERATIVE REAR WINDOW CONTROL SWITCH FOR AN OPEN

    • Ignition OFF.
    • Disconnect: Master Window Control Switch C535B.
    • For an inoperative LR window, measure the resistance between master window control switch C535B, harness side and LR window control switch C701, harness side using the following chart:
      Master Window Control Switch Circuit LR Window Control Switch
      C535B-1 CPW15 (YE)/ CPW17 (BN/GN) C701-1
      C535B-2 CPW16 (BU/OG)/ CPW18 (GY/VT) C701-6
    1. GFD137670Courtesy of FORD MOTOR COMPANY
    • For an inoperative RR window, measure the resistance between master window control switch C535B, harness side and RR window control switch C801, harness side using the following chart:
      Master Window Control Switch Circuit RR Window Control Switch
      C535B-7 CPW17 (BN/GN) C801-1
      C535B-8 CPW18 (GY/VT) C801-6
    1. GFD137671Courtesy of FORD MOTOR COMPANY

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new master window control switch. REFER to Window Control Switch . TEST the system for normal operation.
    No  REPAIR the affected circuit. TEST the system for normal operation.

  5. E5 CHECK THE INOPERATIVE WINDOW CONTROL SWITCH

    • Connect: Master Window Control Switch C535B.
    • Ignition ON.
    • To operate the window in the upward direction, connect fused jumper wires between the inoperative power window switch as shown.
      • For an inoperative LR window, connect a fused jumper wire between LR window control switch C701-1 , circuit CPW17 (BN/GN), harness side and C701-2 , circuit CPW23 (GY), harness side; and a second fused jumper wire between C701-5 , circuit CPW24 (WH/VT), harness side and C701-3 , circuit CPW30 (YE), harness side.
      • For an inoperative RR window, connect a fused jumper wire between RR window control switch C801-1 , circuit CPW17 (BN/GN), harness side and C801-2 , circuit CPW23 (GY) harness side; and a second fused jumper wire between C801-5 , circuit CPW24 (WH/VT), harness side and C801-3 , circuit CPW30 (YE), harness side.
    1. GFD137665Courtesy of FORD MOTOR COMPANY
    • To operate the window in the downward direction, connect fused jumper wires between the inoperative power window switch as shown.
      • For an inoperative LR window, connect a fused jumper wire between LR window control switch C701-3 , circuit CPW30 (YE), harness side and C701-2 , circuit CPW23 (GY), harness side; and a second fused jumper wire between C701-5 , circuit CPW24 (WH/VT), harness side and C701-6 , circuit CPW18 (GY/VT), harness side.
      • For an inoperative RR window, connect a fused jumper wire between RR window control switch C801-3 , circuit CPW30 (YE), harness side and C801-2 , circuit CPW23 (GY), harness side; and a second fused jumper wire between C801-5 , circuit CPW24 (WH/VT), harness side and C801-6 , circuit CPW18 (GY/VT), harness side.
    1. GFD137666Courtesy of FORD MOTOR COMPANY

    Does the window operate correctly? 

    Yes  REMOVE the fused jumper wires. INSTALL a new rear window control switch. REFER to Window Control Switch . TEST the system for normal operation.
    No  REMOVE the fused jumper wires. GO to  E6.

  6. E6 CHECK THE POWER WINDOW MOTOR CIRCUITS

    • Ignition OFF.
    • Disconnect: Inoperative Power Window Motor C703 (LR) or C803 (RR).
    • Measure the resistance between inoperative window control switch and the inoperative window motor.
      • For an inoperative LR window, measure the resistance between LR window control switch C701-5 , circuit CPW24 (WH/VT), harness side and LR power window motor C703-2 , circuit CPW24 (WH/VT), harness side.
      • For an inoperative RR window, measure the resistance between RR window control switch C801-5 , circuit CPW24 (WH/VT), harness side and RR power window motor C803-2 , circuit CPW24 (WH/VT), harness side.
    1. GFD137667Courtesy of FORD MOTOR COMPANY
    • Measure the resistance between inoperative window control switch and the inoperative window motor.
      • For an inoperative LR window, measure the resistance between LR window control switch C701-2 , circuit CPW23 (GY), harness side and LR power window motor C703-1 , circuit CPW23 (GY), harness side.
      • For an inoperative RR window, measure the resistance between RR window control switch C801-2 , circuit CPW23 (GY), harness side and RR power window motor C803-1 , circuit CPW23 (GY), harness side.
    1. GFD137668Courtesy of FORD MOTOR COMPANY

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new window motor. REFER to Window Regulator Motor - Front Door . TEST the system for normal operation.
    No  REPAIR the affected circuit. TEST the system for normal operation.
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