Pinpoint Test B: All Door Locks Are Inoperative

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

B1 CHECK CIRCUIT 7 (LG/YE) FOR VOLTAGE
- Disconnect: VSM C3008a
- Measure the voltage between the VSM C3008a-8, circuit 7 (LG/YE), harness side and ground.
  
  Fig 1: Checking Circuit 7 (LG/YE) For Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
1. YES : Go to B2.
2. NO : VERIFY the central junction box (CJB) fuse 107 (30A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
B2 CHECK CIRCUIT 117 (PK/BK) FOR AN OPEN OR SHORT TO GROUND
- Disconnect: Right Front Door Lock Actuator C603
- Measure the resistance between the right front door lock actuator C603-1, circuit 117 (PK/BK), harness side and the VSM C3008a-2, circuit 117 (PK/BK), harness side; and between the right front door lock actuator C603-1, circuit 117 (PK/BK), harness side and ground.
  
  Fig 2: Checking Circuit 117 (PK/BK) For Open Or Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms between the right front door lock actuator and the VSM, and greater than 10,000 ohms between the right front door lock actuator and ground?
1. YES : Go to B3.
2. NO : REPAIR the circuit. TEST the system for normal operation.
B3 CHECK CIRCUIT 118 (PK/OG) FOR A SHORT TO GROUND
- Measure the resistance between the right front door lock actuator C603-2, circuit 118 (PK/OG), harness side and ground.
  
  Fig 3: Checking Circuit 118 (PK/OG) For Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
1. YES : Go to B4.
2. NO : REPAIR the circuit. TEST the system for normal operation.
B4 CHECK CIRCUIT 163 (RD/OG) FOR A SHORT TO GROUND
- Disconnect: Driver Door Lock Actuator C525
- Measure the resistance between the driver door lock actuator C525-2, circuit 163 (RD/OG), harness side and ground.
  
  Fig 4: Checking Circuit 163 (RD/OG) For Short To Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
1. YES : Go to B5.
2. NO : REPAIR the circuit. TEST the system for normal operation.
B5 CHECK THE SUSPECT DOOR LOCK ACTUATOR
- Connect a fused (5A) jumper wire between the suspect door lock actuator connector pin 1, component side and the battery positive terminal; and a jumper wire between the suspect door lock actuator connector pin 2, component side and ground.
  
  Fig 5: Checking Suspect Door Lock Actuator (1 Of 2)
  Courtesy of FORD MOTOR CO.
- Connect a fused (5A) jumper wire between the suspect door lock actuator connector pin 2, component side and the battery positive terminal; and a jumper wire between the suspect door lock actuator connector pin 1, component side and ground.
  
  Fig 6: Checking Suspect Door Lock Actuator (2 Of 2)
  Courtesy of FORD MOTOR CO.
- Does the door lock actuator operate correctly?
1. YES : REMOVE the jumper wires. Go to B6.
2. NO : INSTALL a new door lock actuator. REFER to Front Door Lock Actuator or Rear Door Lock Actuator in this article. TEST the system for normal operation.
B6 CHECK FOR CORRECT VSM OPERATION
- Disconnect all the VSM connectors.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect all the VSM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new VSM. REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.