Pinpoint Test A: A Single Power Window Is Inoperative - Power Sliding Window

WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

A1 CHECK VOLTAGE TO THE REAR WINDOW ADJUST SWITCH
- Disconnect: Power Sliding Window Switch C203.
- Key in ON position.
- Measure the voltage between power sliding window switch C203-2, circuit 400 (LB/BK) harness side and ground.
  
  Fig 1: Checking Voltage To Rear Window Adjust Switch
- Is the voltage greater than 10 volts?
Yes : GO to A2.

No : REPAIR the circuit. TEST the system for normal operation.
A2 CHECK GROUND TO THE POWER SLIDING WINDOW SWITCH
- Key in OFF position.
- Measure the resistance between power sliding window switch C203-3, circuit 57 (BK) harness side and ground; and between power sliding window switch C203-6, circuit 57 (BK) harness side and ground.
  
  Fig 2: Checking Ground To Power Sliding Window Switch
- Are the resistances less than 5 ohms?
Yes : GO to A3.

No : REPAIR the circuit(s). TEST the system for normal operation.
A3 CHECK THE POWER SLIDING WINDOW SWITCH
- Key in ON position.
- Connect a fused jumper between power sliding window switch C203-2, circuit 400 (LB/BK) and C203-1, circuit 405 (VT/LB) harness side; and between power sliding window switch C203-7, circuit 404 (VT/LG) and C203-6, circuit 57 (BK) harness side. The power sliding window should close.
  
  Fig 3: Checking Power Sliding Window Switch (1 Of 2)
- Connect a fused jumper between power sliding window switch C203-2, circuit 400 (LB/BK) and C203-7, circuit 404 (VT/LG) harness side; and between power sliding window switch C203-1, circuit 405 (VT/LB) and C203-3, circuit 57 (BK) harness side. The power sliding window should open.
  
  Fig 4: Checking Power Sliding Window Switch (2 Of 2)
- Did the power sliding window OPEN and CLOSE?
Yes : INSTALL a new power sliding window switch. TEST the system for normal operation.

No : REMOVE the jumper wires. GO to A4.
A4 CHECK CIRCUIT 404 (VT/LG) AND CIRCUIT 405 (VT/LB) FOR A SHORT TO VOLTAGE
- Key in ON position.
- Disconnect: Power Sliding Window Motor C312.
- Measure the voltage between power sliding window motor C312-1, circuit 404 (VT/LG) and C312-2, circuit 405 (VT/LB) harness side and ground.
  
  Fig 5: Checking Circuit 404 (VT/LG) And Circuit 405 (VT/LB) For Short To Voltage
- Is voltage present?
Yes : REPAIR the circuit(s). TEST the system for normal operation.

No : GO to A5.
A5 CHECK CIRCUIT 404 (VT/LG) AND CIRCUIT 405 (VT/LB) FOR A SHORT TO GROUND
- Key in OFF position.
- Measure the resistance between rear window motor C312-1, circuit 404 (VT/LG) and C312-2, circuit 405 (VT/LB) harness side and ground.
  
  Fig 6: Checking Circuit 404 (VT/LG) And Circuit 405 (VT/LB) For Short To Ground
- Are the resistances greater than 10,000 ohms?
Yes : GO to A6.

No : REPAIR the circuit(s). TEST the system for normal operation.
A6 CHECK CIRCUIT 404 (VT/LG) AND CIRCUIT 405 (VT/LB) FOR AN OPEN
- Measure the resistance between power sliding window motor C312-1, circuit 404 (VT/LG) and power sliding window switch C203-7, circuit 404 (VT/LG) harness side; and between power sliding window motor C312-2, circuit 405 (VT/LB) and power sliding window switch C203-1, 405 (VT/LB) harness side.
  
  Fig 7: Checking Circuit 404 (VT/LG) And Circuit 405 (VT/LB) For Open
- Are the resistances less than 5 ohms?
Yes : INSTALL a new rear window motor. TEST the system for normal operation.

No : REPAIR the circuit(s). TEST the system for normal operation.