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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 920 (Handles, Locks, Latches And Entry Systems) >> Diagnostic Tests >> Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test C: A Single Door Lock Is Inoperative >> Pinpoint Test C: A Single Door Lock Is Inoperative

Pinpoint Test C: A Single Door Lock Is Inoperative

WARNING: This page is about a different car, the 2007 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
  1. C1 CHECK CIRCUIT CPL11 (GY/BN) OR CIRCUIT CPL19 (WH/VT) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: SJB C2280b
    • Disconnect: Suspect Door Lock Actuator Connector
      • Fig 1: Measuring Resistance Between Driver Door Lock Actuator C525-1, Circuit CPL11 (GY/BN) & Ground
      GF0008675Courtesy of FORD MOTOR CO.
    • If the driver side door lock actuator is inoperative, measure the resistance between the driver door lock actuator C525-1, circuit CPL11 (GY/BN), harness side and ground; and between the driver door lock actuator C525-1, circuit CPL11 (GY/BN), harness side and the SJB C2280b-13, circuit CPL11 (GY/BN), harness side.
      • Fig 2: Measuring Resistance Between Passenger Door Lock Actuator C603-1, Circuit CPL19 (WH/VT) & Ground
      GF0008676Courtesy of FORD MOTOR CO.
    • If the passenger side door lock actuator is inoperative, measure the resistance between the passenger door lock actuator C603-1, circuit CPL19 (WH/VT), harness side and ground; and between the passenger door lock actuator C603-1, circuit CPL19 (WH/VT), harness side and the SJB C2280b-9, circuit CPL19 (WH/VT), harness side.
    • Is the resistance greater than 10,000 ohms between the door lock actuator connector and ground, and less than 5 ohms between the door lock actuator and the SJB connector? 
    1. YES  : Go to  C2.
    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  2. C2 CHECK CIRCUIT CPL18 (GY/VT) OR CIRCUIT CPL51 (BU/GN) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: SJB C2280c
      • Fig 3: Measuring Resistance Between Driver Door Lock Actuator C525-2, Circuit CPL51 (BU/GN) & Ground
      GF0008677Courtesy of FORD MOTOR CO.
    • If the driver side door lock actuator is inoperative, measure the resistance between the driver door lock actuator C525-2, circuit CPL51 (BU/GN), harness side and ground; and between the driver door lock actuator C525-2, circuit CPL51 (BU/GN), harness side and the SJB C2280c-12, circuit CPL51 (BU/GN), harness side.
      • Fig 4: Measuring Resistance Between Passenger Door Lock Actuator C603-2, Circuit CPL18 (GY/VT) & Ground
      GF0008678Courtesy of FORD MOTOR CO.
    • If the passenger side door lock actuator is inoperative, measure the resistance between the passenger door lock actuator C603-2, circuit CPL18 (GY/VT), harness side and ground; and between the passenger door lock actuator C603-2, circuit CPL18 (GY/VT), harness side and the C2280b-10, circuit CPL18 (GY/VT), harness side.
    • Is the resistance greater than 10,000 ohms between the door lock actuator connector and ground, and less than 5 ohms between the door lock actuator and the SJB connector? 
    1. YES  : Go to  C3.
    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  3. C3 CHECK THE SUSPECT DOOR LOCK ACTUATOR OPERATION 
      Fig 5: Connecting Fused (5A) Jumper Wire Between Suspect Door Lock Actuator Connector Pin 1
      GF0008679Courtesy of FORD MOTOR CO.
    • Connect a fused (5A) jumper wire between the suspect door lock actuator connector pin 1, component side and the battery positive terminal; and between the suspect door lock actuator connector pin 2, component side and ground.
      • Fig 6: Connecting Fused (5A) Jumper Wire Between Suspect Door Lock Actuator Connector Pin 2
      GF0008680Courtesy 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 between the suspect door lock actuator connector pin 1, component side and ground.
    • Does the door lock actuator operate correctly? 
    1. YES  : Go to  C4.
    2. NO  : INSTALL a new door lock actuator. REFER to Door Lock Actuator . CLEAR the DTCs. REPEAT the self-test.
  4. C4 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the SJB 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 SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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