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Pinpoint Test B: Single Power Window Is Inoperative - Driver Power Window

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
  1. B1 CHECK CIRCUIT 400 (LB/BK) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504.
    • Measure the voltage between driver window control switch C504-2, circuit 400 (LB/BK), harness side and ground.
      Fig 1: Checking Circuit 400 (LB/BK) For Voltage
      G03277684Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to B2.
    2. No  : GO to  B5.
  2. B2 CHECK THE GROUND TO THE DRIVER WINDOW CONTROL SWITCH - CIRCUIT 57 (BK) 
    • Key in OFF position.
    • Measure the resistance between driver window control switch C504-5, circuit 57 (BK), harness side and ground.
      Fig 2: Checking Ground To Driver Window Control Switch - Circuit 57 (BK)
      G03277685Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to B3.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK THE DRIVER POWER WINDOW SWITCH 
    • Remove the driver window control switch.
    • Carry out the driver window control switch component test.

      Refer to the appropriate SYSTEM WIRING DIAGRAMS for schematic and connector information.

    • Did the driver window control switch pass the component test? 
    1. Yes  : GO to B4.
    2. No  : INSTALL a new driver window control switch. TEST the system for normal operation.
  4. B4 CHECK FOR VOLTAGE AT THE DRIVER WINDOW MOTOR 
    • Connect: Driver Window Control Switch C504.
    • Disconnect: Driver Window Motor C524.
    • Key in ON position.
    • Press the driver window control switch to the UP position while measuring the voltage between driver window motor C524-1, circuit 992 (WH/BK) harness side and ground. Press the driver window control switch to the DOWN position while measuring the voltage between driver window motor C524-2, circuit 903 (RD) harness side and ground.
    • Is the voltage greater than 10 volts on both circuits? 
    1. Yes  : INSTALL a new driver window motor. REFER to MOTOR AND WINDOW REGULATOR . CLEAR the DTCs. TEST the system for normal operation.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  5. B5 CHECK THE ACCESSORY DELAY RELAY 
    • Key in OFF position.
    • Disconnect: Accessory Delay Relay.
    • Carry out the accessory delay relay component test.

      Refer to the appropriate SYSTEM WIRING DIAGRAMS for schematic and connector information .

    • Did the accessory delay relay pass the component test? 
    1. Yes  : GO to B6.
    2. No  : INSTALL a new accessory delay relay. TEST the system for normal operation.
  6. B6 CHECK THE VOLTAGE SOURCE TO THE ACCESSORY DELAY RELAY 
    • Disconnect: Accessory Delay Relay.
    • Key in ON position.
    • Measure the voltage between accessory delay relay C2050, pin 85 and ground; and between accessory delay relay C2050, pin 30 and ground.
      Fig 3: Checking Voltage Source To Accessory Delay Relay
      G03277686Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts on both circuits? 
    1. Yes  : GO to 7.
    2. No  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES . CLEAR the DTCs. REPEAT the SJB self-test.
  7. B7 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280c.
    • Measure the resistance between driver window control switch C504-2, circuit 400 (LB/BK), harness side and SJB C2280c-20, circuit 400 (LB/BK).
      Fig 4: Checking Circuit 400 (LB/BK) For An Open
      G03277687Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to B8.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  8. B8 CHECK THE ACCESSORY DELAY RELAY GROUND 
    • Connect: SJB C2280C.
    • Measure the resistance between accessory delay relay C2050, pin 86 and ground.
      Fig 5: Checking Accessory Delay Relay Ground
      G03277688Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to B9.
    2. No  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES . CLEAR the DTCs. REPEAT the SJB self-test.
  9. B9 CHECK FOR CORRECT MODULE OPERATION 
    • Disconnect: SJB C2280C.
    • Disconnect: SJB C2280D.
    • Check for:
      • Corrosion.
      • Damage or pushed-out pins.
    • Connect all the SJB connectors and make sure they are seated correctly.
    • Operate the system and verify if the concern is still present.
    • Is the concern still present? 
    1. Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES . CLEAR the DTCs. REPEAT the SJB self-test.
    2. No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self -test.
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