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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1031 (Windows And Glass) >> Diagnostic Tests >> Glass, Frames and Mechanisms >> Pinpoint Tests >> Pinpoint Test A: All Power Windows Are Inoperative >> Pinpoint Test A: All Power Windows Are Inoperative

Pinpoint Test A: All Power Windows Are Inoperative

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK THE VOLTAGE TO THE LH FRONT WINDOW CONTROL SWITCH - CIRCUIT 170 (RD/LB) 
    • Key in OFF position.
    • Disconnect: LH Front Window Control Switch C508
    • Key in ON position.
      • Fig 1: Checking Circuit For Voltage
      GF0023751Courtesy of FORD MOTOR CO.
    • Measure the voltage between LH front window control switch C508-8, circuit 170 (RD/LB), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A2.
    2. NO  : INSPECT smart junction box (SJB) fuse 15 (30A). If OK, go to  A3 .
  2. A2 CHECK THE GROUND TO THE LH FRONT WINDOW CONTROL SWITCH - CIRCUIT 57 (BK) 
    • Key in OFF position.
      • Fig 2: Checking Circuit For Open
      GF0023752Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch C508-12, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. A3 CHECK CIRCUIT 170 (RD/LB) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280c
      • Fig 3: Checking Circuit For Open
      GF0023753Courtesy of FORD MOTOR CO.
    • Measure the resistance between LH front window control switch C508-8, circuit 170 (RD/LB), harness side and SJB C2280c-29, circuit 170 (RD/LB), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to Pinpoint Test I .
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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