Pinpoint Test

CHECK THE Left Hand (LH) FRONT WINDOW CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN
1. Ignition OFF.
2. Disconnect: Left Hand (LH) Front Window Control Switch C535B.
3. Measure:
  
  Fig 1: Checking Left Hand (LH) Front Window Control Switch Ground Circuit For Open
  Courtesy of FORD MOTOR CO.
  - Is the resistance less than 3 ohms?
  - Yes: GO to step 2 .
  - No: REPAIR the circuit.
CHECK THE Left Hand (LH) FRONT WINDOW CONTROL SWITCH OPERATION
1. Ignition ON.
2. To check upward window operation, connect fused jumper wires:
  
  Fig 2: Checking Left Hand (LH) Front Window Control Switch Operation (Upward Window Operation)
  Courtesy of FORD MOTOR CO.
3. To check downward window operation, connect fused jumper wires:
  
  Fig 3: Checking Left Hand (LH) Front Window Control Switch Operation (Downward Window Operation)
  Courtesy of FORD MOTOR CO.
  - Does the window move up and/or down?
  - Yes: INSTALL a new Left Hand (LH) front window control switch. REFER to WINDOW CONTROL SWITCH .
  - No: GO to step 3 .
CHECK FOR AN OPEN CIRCUIT BETWEEN THE Left Hand (LH) WINDOW CONTROL SWITCH AND WINDOW MOTOR
1. Ignition OFF.
2. Disconnect: Left Hand (LH) Front Window Motor.
3. Measure:
  
  Fig 4: Checking For Open Circuit Between Left Hand (LH) Window Control Switch And Window Motor
  Courtesy of FORD MOTOR CO.
  - Are the resistances less than 3 ohms?
  - Yes: INSTALL a new Left Hand (LH) front window motor. REFER to WINDOW REGULATOR MOTOR - FRONT DOOR .
  - No: REPAIR the affected circuit.