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Home >> Lincoln >> 2009 >> MKX FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2144 (MULTIFUNCTION Electronic Modules) >> Diagnosis And Testing >> Driver Seat Module (DSM) >> Pinpoint Tests >> Pinpoint Test C: DTC B1318 >> Pinpoint Test C: DTC B1318

Pinpoint Test C: DTC B1318

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. 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.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .
  1. C1 CHECK THE DSM DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DSM  Self-Test.
    • Clear the DTCs. Repeat the DSM  self-test.
    • Is DTC B1318 still present? 
    • Yes:  GO to C2  .
    • No:  The system is operating normally at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.
  2. C2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM 
    • Enter the following diagnostic mode on the scan tool: PCM Self-Test.
    • Retrieve the continuous memory DTCs from the PCM.
    • Is DTC P0620, P0625, P0626 or P065B set in the PCM? 
  3. C3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE 
    • Ignition OFF.
    • Check the battery condition and verify the battery is fully charged. Refer to BATTERY, MOUNTING AND CABLES .
    • Is the battery OK and fully charged? 
  4. C4 CHECK THE DSM VOLTAGE SUPPLY 
    • Measure and record the voltage at the battery.
    • Disconnect: DSM  C3299A.
    • Ignition ON.
    • Measure the voltage between the DSM  C3299A-1, circuit SBB60 (GN/RD), harness side and ground.
      Fig 1: Checking Circuit For High Resistance
      G06134166Courtesy of FORD MOTOR CO.
    • Is the voltage within 0.2 volt of the recorded battery voltage? 
    • Yes:  GO to C5  .
    • No:  REPAIR the circuit for high resistance. CLEAR the DTC. REPEAT the self-test.
  5. C5 CHECK THE DSM GROUND CIRCUIT 
    • Ignition OFF.
    • Disconnect: Negative Battery Cable.
    • Measure the resistance between the DSM  C3299A-2, circuit GD145 (BK/BU), harness side and ground.
      Fig 2: Checking Circuit For High Resistance
      G06134167Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to C6  .
    • No:  REPAIR the circuit for high resistance. CONNECT the negative battery cable. TEST the system for normal operation.
  6. C6 CHECK FOR CORRECT DSM OPERATION 
    • Connect: Negative Battery Cable.
    • Disconnect the DSM  connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the DSM  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 DSM  . REFER to DRIVER SEAT MODULE (DSM) . TEST the system for normal operation.
    • 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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