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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1401 (Seat System - Seats) >> Diagnosis And Testing >> Seats >> Pinpoint Tests >> Pinpoint Test AK: DTCs B1317, B1318 and B2486 >> PINPOINT TEST AK: DTCs B1317, B1318 AND B2486

PINPOINT TEST AK: DTCs B1317, B1318 AND B2486

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When taking measurements at Dual Climate Controlled Seat Module (DCSM) harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in Diagnostic Trouble Codes (DTCs) and system failure. Touching the tip of these connector pins is recommended instead.
NOTE: DTC B1317, B1318 or B1676 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.
NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is ON.
NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
  1. AK1 RETRIEVE ALL CMDTCs IN ALL MODULES 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: Self Test - ALL CMDTCs  .
    • Is DTC B1317, B1318, B2486 or B1676 present in one or more modules AND P0563, P0620, P0625, P0626 or P065B retrieved from the PCM? 
  1. AK2 CHECK THE BATTERY CONDITION 
    NOTE: DTC B1317, B1318 or B1676 can be set if the vehicle has been recently jump started, the battery has been recently charged or the battery has been discharged. The battery may become discharged due to excessive load(s) on the charging system from aftermarket accessories or if the battery has been left unattended with the accessories on.
  1. AK3 CHECK THE CHARGING SYSTEM VOLTAGE 
    NOTE: Do not allow the engine speed to increase above 2,000 rpm while performing this step or the generator may self excite and result in default charging system output voltage. If engine speed goes above 2,000 rpm, shut the vehicle OFF and restart the engine before performing this step.
    • Start the engine.
    • Measure voltage of the battery with and without a load on the charging system as follows:
      • Turn off all accessories and run the engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage.
      • Turn on headlights and HVAC fan on high and run engine at 1,500 rpm for a minimum of 2 minutes while measuring battery voltage.
      Fig 1: Checking Charging System Voltage
      G06259367Courtesy of FORD MOTOR CO.
    • Are the voltages between 13 and 15.2 volts? 
  1. AK4 CHECK VOLTAGE TO THE DSM 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Driver Seat Side Air Bag C327.
    • Disconnect: DSM  C3299a and C3299b.
      WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
    • Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
    • Ignition ON.
    • Measure the voltage between:
      • DSM  C3299a-1, circuit SBB32 (VT/RD), harness side and ground.
      • DSM  C3299b-1, circuit SBP12 (GN/RD), harness side and ground.
      Fig 2: Checking Voltage To DSM
      G06259368Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
  1. AK5 CHECK THE DSM GROUND CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between:
      • DSM  C3299a-2, circuit GD126 (BK/WH), harness side and ground.
      • DSM  C3299b-24, circuit GD126 (BK/WH), harness side and ground.
      Fig 3: Checking DSM Ground Circuits For Open
      G06259369Courtesy of FORD MOTOR CO.
    • Repeat this measurement while wiggling the harness.
    • Are the resistances less than 5 ohms? 
  1. AK6 CHECK FOR CORRECT DSM OPERATION 
    • Check the harness and component side connectors for the following:
      • corrosion.
      • damaged pins.
      • pushed-out pins.
    • Connect: DSM  C3299a and C3299b.
    • Make sure the DSM  connectors are seated correctly.
    • Operate the memory seat, mirrors and pedals to verify correct memory system operation.
    • Enter the following diagnostic mode on the scan tool: Self Test - DSM  .
    • Is DTC B1317 or B1318 still present? 
  1. AK7 CHECK VOLTAGE TO THE DCSM 
    • Ignition OFF.
    • Depower the SRS  . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
    • Disconnect: Passenger Seat Side Air Bag C313.
    • Disconnect: DCSM  C3305a.
      WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
    • Connect the battery ground cable. Refer to BATTERY, MOUNTING AND CABLES .
    • Ignition ON.
    • Measure the voltage between:
      • DCSM  C3305a-E, circuit SBB12 (GN/RD), harness side and ground.
      • DCSM  C3305a-F, circuit SBB12 (GN/RD), harness side and ground.
      Fig 4: Checking Voltage To DCSM
      G06259370Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
  1. AK8 CHECK THE DCSM GROUND CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between DCSM  C3305a-M, circuit GD139 (BK/YE), harness side and ground.
      Fig 5: Measuring Resistance Between DCSM C3305a-M, Circuit GD139 (BK/YE) Harness Side And Ground
      G06259371Courtesy of FORD MOTOR CO.
    • Repeat this measurement while wiggling the harness.
    • Is the resistance less than 5 ohms? 
  1. AK9 CHECK FOR CORRECT DCSM OPERATION 
    • Check the harness and component side connectors for the following:
      • corrosion.
      • damaged pins.
      • pushed-out pins.
    • Connect: DCSM  C3305a.
    • Make sure the DCSM  connector is seated correctly.
    • Start the engine.
    • Operate the climate controlled seats and verify system operation.
    • Enter the following diagnostic mode on the scan tool: Self Test - DCSM  .
    • Is DTC B1317 or B1318 still present? 
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