LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2005 >> Focus ZX5 S, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Handles, Locks, Latches And Entry Systems >> Diagnosis And Testing >> Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test A: All Door Locks Are Inoperative

Pinpoint Test A: All Door Locks Are Inoperative

  1. A1 CHECK THE LOCK(S) OPERATION 
    • Key in OFF position.
    • Press both the driver and passenger door lock control switches to the LOCK and UNLOCK position.
    • Are all the door locks inoperative? 
    • Yes  : Go to  A2.
    • No  : Go to  A5.
  2. A2 CHECK THE GEM GROUND 
    • Disconnect: GEM C201a.
    • Disconnect: GEM C201d.
    • Measure the resistance between the GEM C201a pin 5, circuit 31-DK20 (BK), harness side and ground; and between the GEM C201d pin 1, circuit 91-DK20 (BK/BU), harness side and ground.
      Fig 1: Checking GEM Ground
      G03953034Courtesy of FORD MOTOR CO.
    • Are both resistances less than 0.5 ohms? 
    • Yes  : Go to  A3.
    • No  : REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.
  3. A3 CHECK CIRCUIT 29-AA17 (OG/WH) FOR VOLTAGE 
    • Disconnect: GEM C201c.
    • Measure the voltage between the GEM C201c pin 1, circuit 29-AA17 (OG/WH), harness side and ground.
      Fig 2: Measuring Voltage Between GEM C201C Pin 1, Circuit 29-AA17 (OG/WH), Harness Side And Ground
      G03953035Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : Go to  A9.
    • No  : Go to  A4.
  4. A4 CHECK CIRCUIT 29-AA17 (OG/WH) FOR AN OPEN OR A SHORT TO GROUND 
    • Disconnect: CJB C270f.
    • Measure the voltage between the GEM C201c pin 1, circuit 29-AA17 (OG/WH), harness side and the CJB C270f pin 2, circuit 29-AA17 (OG/WH), harness side; and between the GEM C201c pin 1, circuit 29-AA17 (OG/WH), harness side and ground.
      Fig 3: Checking Circuit 29-AA17 (OG/WH) For An Open Or A Short To Ground
      G03953036Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the GEM and CJB, and greater than 10,000 ohms between the GEM and ground? 
    • Yes  : INSTALL a new CJB. CLEAR the DTCs. REPEAT the self-test.
    • No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  5. A5 CHECK CIRCUIT 32-AA59 (WH/BK) FOR VOLTAGE 
    • Disconnect: Driver Side Door Lock Actuator C525.
    • Disconnect: Passenger Side Door Lock Actuator C609.
    • Disconnect: Driver Side Rear Door Lock Actuator C705.
    • Disconnect: Passenger Side Rear Door Lock Actuator C805.
    • Measure the voltage between the inoperative door lock actuator connector and ground while pressing the door lock control switch UNLOCK button of an operational door lock control switch.
      • Measure the voltage between the driver side door lock actuator C525 pin 2, circuit 32-AA59A (WH/BK), harness side and ground.
      • Measure the voltage between the passenger side door lock actuator C609 pin 2, circuit 32-AA59B (WH/BK), harness side and ground.
      • Measure the voltage between the driver side rear door lock actuator C705 pin 2, circuit 32-AA59 (WH/BK), harness side and ground.
      • Measure the voltage between the passenger side rear door lock actuator C805 pin 2, circuit 32-AA59 (WH/BK), harness side and ground.
      Fig 4: Checking Circuit 32-AA59 (WH/BK) For Voltage
      G03953037Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
    • Yes  : Go to  A8.
    • No  : If the driver door lock is inoperative, Go to  A6.

      Otherwise, REPAIR the suspect circuit(s). CLEAR the DTCs. REPEAT the self-test.

  6. A6 CHECK CIRCUIT 32-AA59A (WH/BK) FOR AN OPEN 
    • Disconnect: GEM C201e.
    • Measure the resistance between the GEM C201e pin 5, circuit 32-AA59A (WH/BK), harness side and the driver side door lock actuator C525 pin 2, circuit 32-AA59A (WH/BK), harness side.
      Fig 5: Checking Circuit 32-AA59A (WH/BK) For An Open
      G03953038Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes  : Go to  A7.
    • No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  7. A7 CHECK CIRCUIT 32-AA59A (WH/BK) FOR A SHORT TO GROUND 
    • Measure the resistance between the GEM C201e pin 5, circuit 32-AA59A (WH/BK), harness side and ground.
      Fig 6: Measuring Resistance Between GEM C201e Pin 5, Circuit 32-AA59A (WH/BK), Harness Side And Ground
      G03953039Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes  : Go to  A9.
    • No  : REPAIR the circuit. CLEAR the DTCs.

      REPEAT the self-test.

  8. A8 CHECK CIRCUIT 33-AA59 (YE/BK) FOR A SHORT TO GROUND 
    • Measure the resistance between the inoperative door lock actuator and ground while pressing the door lock control switch UNLOCK button and when the door lock control switch is released.
      • Measure the resistance between the driver door lock actuator C525 pin 1, circuit 33-AA59A (YE/BK), harness side and ground.
      • Measure the resistance between the passenger door lock actuator C609 pin 1, circuit 33-AA59B (YE/BK), harness side and ground.
      • Measure the resistance between the driver side rear door lock actuator C705 pin 1, circuit 33-AA59 (YE/BK), harness side and ground.
      • Measure the resistance between the passenger side rear door lock actuator C805 pin 1, circuit 33-AA59 (YE/BK), harness side and ground.
      Fig 7: Checking Circuit 33-AA59 (YE/BK) For A Short To Ground
      G03953040Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms when UNLOCK is pressed, and greater than 10,000 ohms when UNLOCK is released? 
    • Yes  : INSTALL a new door latch. REFER to FRONT DOOR LATCH  or REAR DOOR LATCH . CLEAR the DTCs. REPEAT the self-test.
    • No  : REPAIR the circuit. CLEAR the DTCs.

      REPEAT the self-test.

  9. A9 CHECK FOR CORRECT GEM OPERATION 
    • Disconnect all GEM connectors.
    • Check for:
      • Corrosion
      • Pushed-out pins
    • Connect all GEM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new GEM. Refer to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test.
    • 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.
scientia non olet · About LEMON Manuals