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Pinpoint Test A: All Power Windows Are Inoperative

  1. A1 CHECK THE SJB DTCs 
    • Retrieve the recorded DTC results from the SJB for the continuous and on-demand self test.
    • Are any DTCs recorded? 
    1. YES  : REFER to the SJB Diagnostic Trouble Code Index.
    2. NO  : Go to  A2.
  2. A2 CHECK THE LH FRONT WINDOW CONTROL SWITCH GROUND 
    • Disconnect: LH Front Window Control Switch C508a
      • Fig 1: Checking Circuit For Open
      GF0032696Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch C508a-1, circuit 1205 (BK), harness side and ground; and between LH front window control switch C508a-5, circuit 1205 (BK), harness side and ground.
    • Is the resistance less than 5 ohms on both circuits? 
    1. YES  : Go to  A3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. A3 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all SJB connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect all the SJB connectors and make sure they are seated correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. 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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