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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1398 (Handles, Locks, Latches & Entry Systems) >> Diagnostic Tests >> Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test J: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad >> Pinpoint Test J: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad

Pinpoint Test J: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. J1 CHECK THE SJB KEYCODE PID 
    • Enter the following diagnostic mode on the diagnostic tool: SJB DataLogger
    • Observe the SJB PID (KEYCODE). Read and record the 5-digit factory set entry code.
    • Enter the 5-digit factory set entry code on the keyless entry keypad, then press the 3/4 button.
    • Do the doors unlock? 
    1. YES  : The system is operating as designed. INFORM the customer of the correct system operation.
    2. NO  : Go to  J2.
  2. J2 RETRIEVE THE RECORDED SJB DTCs FROM THE ON-DEMAND SELF-TEST 
    • Check for recorded SJB DTCs from the on-demand self-test.
    • Is DTC B2695, B2696, or B2697 recorded? 
    1. YES  : Go to  J3.
    2. NO  : Go to  J5.
  3. J3 REPEAT THE SJB ON-DEMAND SELF-TEST 
    • Disconnect: Keyless Entry Keypad C530
    • Clear the DTCs, then repeat the SJB on-demand self-test.
    • Is DTC B26956, B2696, or B2697 recorded? 
    1. YES  : Go to  J4.
    2. NO  : INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad . CLEAR the DTCs. REPEAT the self-test.
  4. J4 CHECK CIRCUITS CPK29 (GY/BU), CPK30 (VT/GN) AND CPK31 (YE/GN) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: SJB C2280c
    • Measure the resistance between the keypad, harness side and ground as follows:
      Keypad Connector-Pin Circuit
      C530-7 CPK29 (GY/BU)
      C530-5 CPK30 (VT/GN)
      C530-1 CPK31 (YE/GN)
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  J10.
    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  5. J5 CHECK THE SJB KEY_PAD PID 
    • Enter the following diagnostic mode on the diagnostic tool: SJB DataLogger
    • Press each keyless entry keypad button while observing the SJB PID (KEY_PAD).
    • Does the PID display the correct values? 
    1. YES  : Go to  J10.
    2. NO  : Go to  J6.
  6. J6 CHECK CIRCUIT GD126 (BK/WH) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Keyless Entry Keypad C530
      • Fig 1: Checking Circuit GD126 (BK/WH) For An Open
      GF0028457Courtesy of FORD MOTOR CO.
    • Measure the resistance between the keyless entry keypad C530-2, circuit GD126 (BK/WH), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  J7.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  7. J7 CHECK THE KEYLESS ENTRY KEYPAD 
    • Connect a fused (5A) jumper wire between the keyless entry keypad harness side, while monitoring the SJB PID (KEY_PAD) as follows:
      Keyless Entry Keypad Connector-Pin/ Circuit Keyless Entry Keypad Connector-Pin/ Circuit SJB PID (KEY_PAD) Value
      C530-7
      CPK29 (GY/BU)      		 C530-2
      GD126 (BK/WH)      		 1/2
      C530-5
      CPK30 (VT/GN)      		 C530-2
      GD126 (BK/WH)      		 7/8
      C530-1
      CPK31 (YE/GN)      		 C530-2
      GD126 (BK/WH)      		 9/0
    • Does the PID display the correct values? 
    1. YES  : INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad .
    2. NO  : Go to  J8.
  8. J8 CHECK CIRCUITS CPK29 (GY/BU), CPK30 (VT/GN) AND CPK31 (YE/GN) FOR AN OPEN 
    • Disconnect: SJB C2280c
    • Measure the resistance between the SJB, harness side and the keyless entry keypad, harness side as follows:
      SJB Connector-Pin Circuit Keyless Entry Keypad Connector-Pin
      C2280c-15 CPK29 (GY/BU) C530-7
      C2280c-16 CPK30 (VT/GN) C530-5
      C2280c-21 CPK31 (YE/GN) C530-1
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  J9.
    2. NO  : REPAIR the circuit in question. TEST the system for normal operation.
  9. J9 CHECK CIRCUITS CPK29 (GY/BU), CPK30 (VT/GN) AND CPK31 (YE/GN) FOR A SHORT TO EACH OTHER 
    • Measure the resistance between the keypad, harness side as follows:
      Keypad Connector-Pin Circuits Keypad Connector-Pin
      C530-7 CPK29 (GY/BU) and CPK30 (VT/GN) C530-5
      C530-7 CPK29 (GY/BU) and CPK31 (YE/GN) C530-1
      C530-5 CPK30 (VT/GN) and CPK31 (YE/GN) C530-1
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  J10.
    2. NO  : REPAIR the circuit in question. TEST the system for normal operation.
  10. J10 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 article. CYCLE each IKT key to the ON position for a minimum of 6 seconds to program the RKE function of the integrated keys. 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.
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