Pinpoint Test A: All Door Locks Are Inoperative From One Switch: Testing

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

A1 CHECK THE SUSPECT DOOR LOCK CONTROL SWITCH
- Key in OFF position.
- Disconnect: Suspect Door Lock Control Switch C541 (LH front) or C605 (RH front).
- Carry out the door lock control switch component test. Refer to COMPONENT TESTING for component testing.
- Is the door lock control switch OK?
- Yes : GO to A2.
- No : INSTALL a new door lock control switch as necessary. CLEAR the DTCs. REPEAT the self-test.
A2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
- Measure the resistance between the suspect door lock control switch connector pin 3, circuit 1205 (BK), harness side and ground.
  
  Fig 1: Checking Circuit 1205 (BK) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : GO to A3.
- No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A3 CHECK CIRCUIT 1762 (PK/LG) FOR AN OPEN
- Disconnect: SJB C2280c.
- Measure the resistance between the suspect door lock control switch connector pin 1, circuit 1762 (PK/LG), harness side and the SJB C2280C-18, circuit 1762 (PK/LG), harness side.
  
  Fig 2: Checking Circuit 1762 (PK/LG) For An Open
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes : REPAIR circuit 1761 (PK/YE). CLEAR the DTCs. REPEAT the self-test.
- No : REPAIR circuit 1762 (PK/LG). CLEAR the DTCs. REPEAT the self-test.