Pinpoint Test A: All Power Windows Are Inoperative

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

A1 CHECK CIRCUIT 1499 (PK/LG) FOR VOLTAGE
- Disconnect: LH Front Window Control Switch C504a.
- Key in ON position.
- Measure the voltage between LH front window control switch C504a-5, circuit 1499 (PK/LG), harness side and ground.
  
  Fig 1: Measuring Voltage Between LH Front Window Control Switch C504a-5, Circuit 1499 (PK/LG), Harness Side & Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
Yes: GO to A3.

No: GO to A2.
A2 CHECK CIRCUIT 1499 (PK/LG) FOR AN OPEN
- Key in OFF position.
- Disconnect: SJB C2280e.
- Measure the resistance between LH front window control switch C504a-1, circuit 1499 (PK/LG), harness side and SJB 02280e-4, circuit 1499 (PK/LG), harness side.
  
  Fig 2: Checking Circuit 1499 (PK/LG)
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes: GO to PINPOINT TEST H to diagnose the delayed accessory relay circuit.

No: REPAIR the circuit. TEST the system for normal operation.
A3 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Disconnect: LH Front Window Control Switch C504b.
- Measure the resistance between LH front window control switch C504b-4, circuit 1205 (BK), harness side and ground.
  
  Fig 3: Measuring Resistance Between LH Front Window Control Switch C504b-4, Circuit 1205 (BK), Harness Side & Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
Yes: INSTALL a new LH front window control switch. REFER to WINDOW CONTROL SWITCH . TEST the system for normal operation.

No: REPAIR the circuit. TEST the system for normal operation.