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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1098 (Handles, Locks, Latches And Entry Systems) >> Diagnostic Tests >> Locks, Latches and Entry Systems - Module Controlled >> Pinpoint Tests >> Pinpoint Test D: The Door Locks Operate Only One Way >> Pinpoint Test D: The Door Locks Operate Only One Way

Pinpoint Test D: The Door Locks Operate Only One Way

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. 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.
NOTE: The side and rear cargo doors equipped with the E-Guard Cargo Protection SystemTM , will not unlock electronically or with the door lock rod.
  1. D1 RETRIEVE THE RECORDED VSM DTCs FROM THE CONTINUOUS AND ON-DEMAND SELF-TESTS 
    • Check for recorded VSM DTCs from the continuous and on-demand self-tests.
    • Are any DTCs recorded? 
    1. YES  : For DTC B2574 or B2575, go to Pinpoint Test E .
    2. NO  : Go to  D2.
  2. D2 CHECK THE SUSPECT DOOR LOCK CONTROL SWITCH 
    • Disconnect: Suspect Door Lock Control Switch
    • Carry out the door lock control switch component test. Refer to COMPONENT TESTING.
    • Is the door lock control switch OK? 
    1. YES  : Go to  D3.
    2. NO  : INSTALL a new door lock control switch. REFER to Door Lock Control Switch - Front Door  or Door Lock Control Switch - Rear Door . TEST the system for normal operation.
  3. D3 CHECK CIRCUITS 119 (PK/YE) AND 120 (PK/LG) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: VSM C2113b
    • If the doors do not lock, measure the resistance between the suspect door lock control switch and VSM as follows:
      Suspect Door Lock Switch Connector-Pin Circuit VSM Connector-Pin
      LH C508-12 119 (PK/YE) C2113b-8
      RH C629-4 119 (PK/YE) C2113b-8
      Rear C4121-5 119 (PK/YE) C2113b-8
    • If the doors do not unlock, measure the resistance between the suspect door lock control switch and VSM as follows:
      Suspect Door Lock Switch Connector-Pin Circuit VSM Connector-Pin
      LH C508-5 120 (PK/LG) C2113b-7
      RH C629-9 120 (PK/LG) C2113b-7
      Rear C4121-1 120 (PK/LG) C2113b-7
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  D4.
    2. NO  : REPAIR the circuit in question. TEST the system for normal operation.
  4. D4 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.
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