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PINPOINT TEST A: DTCs B1317 AND B1318

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
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: Carry out a thorough inspection and verification before proceeding with the pinpoint test. Refer to INSPECTION AND VERIFICATION .
  1. A1 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 or B1676 present in one or more modules AND is DTC P0563, P0620, P0625, P0626 or P065B present in the PCM? 
    • Yes:  REFER to DIAGNOSIS AND TESTING for diagnosis of the battery and charging system.
    • No:  GO to A2  .
  2. A2 CHECK BATTERY CONDITION 
    • Yes:  If the battery passed the condition test but required a recharge, REFER to DIAGNOSIS AND TESTING to diagnose the charging system. CLEAR all Continuous Memory Diagnostic Trouble Codes (CMDTCs). TEST the system for normal operation.

      If the battery passed the condition test and did not require a recharge, GO to A3  .

    • No:  INSTALL a new battery. CLEAR all CMDTCs  . TEST the system for normal operation.
  3. A3 CHECK THE CHARGING SYSTEM VOLTAGE 
    NOTE: Do not allow the engine RPM 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 RPM has gone above 2,000 RPM, shut the vehicle OFF and restart the engine before performing this step.
    • Start the engine.
    • Measure the voltage of the battery:
      • For DTC B1317, turn off all accessories and run the engine at 1,500 RPM for a minimum of 2 minutes.
      • For DTC B1318, turn on headlights and HVAC fan on high and run engine at 1,500 RPM for a minimum of 2 minutes.
        Fig 1: Measuring Battery Voltage
        G06063926Courtesy of FORD MOTOR CO.
    • Is the battery voltage between 13-15.2 volts? 
    • Yes:  For DTC B1318, GO to A4  .

      For DTC B1317, GO to  A7.

    • No:  REFER to DIAGNOSIS AND TESTING to diagnose the charging system. CLEAR all CMDTCs  . TEST the system for normal operation.
  4. A4 CHECK FOR IGNITION VOLTAGE AT THE PSCM 
    • Ignition OFF.
    • Disconnect: PSCM  C1463A.
    • Ignition ON.
    • Measure the voltage between PSCM  C1463A-1, circuit CBP35 (YE/GY), harness side and ground.
      Fig 2: Checking Circuit CBP35
      G06094625Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 11 volts? 
    • Yes:  GO to A5  .
    • No:  VERIFY SJB  fuse 35 (10A) is OK. If OK, REPAIR circuit CBP35 (YE/GY). If not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the self-test.
  5. A5 CHECK FOR BATTERY VOLTAGE AT THE PSCM 
    • Disconnect: PSCM  C1463B.
    • Measure the voltage between PSCM  C1463B-1, circuit SBB01 (RD), harness side and ground.
      Fig 3: Checking Circuit SBB01
      G06389241Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 11 volts? 
    • Yes:  GO to A6  .
    • No:  REPAIR circuit SBB01 (RD). CLEAR the DTCs. REPEAT the self-test.
  6. A6 CHECK THE PSCM GROUND CIRCUIT FOR AN OPEN 
    • Measure the resistance between PSCM  C1463B-2, circuit GD116 (BK/VT), harness side and ground.
      Fig 4: Checking Circuit GD116
      G06094627Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to A7  .
    • No:  REPAIR circuit GD116 (BK/VT). CLEAR the DTCs. REPEAT the self-test.
  7. A7 CHECK THE PSCM OPERATION 
    • Disconnect the PSCM  connectors.
    • Check the connectors for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect the PSCM  connectors and make sure that they are seated correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes:  INSTALL a new steering column. REFER to STEERING COLUMN . 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.
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