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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 132 (Charging System) >> Diagnosis And Testing >> Pinpoint Test >> Pinpoint Test A: DTCs B1317, B1676 and/or P0563 >> PINPOINT TEST A: DTCs B1317, B1676, P0563 AND/OR P0563

PINPOINT TEST A: DTCs B1317, B1676, P0563 AND/OR P0563

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Make sure battery voltage is greater than 12.2 volts prior to and during this pinpoint test.
NOTE: Do not have a battery charger attached during vehicle testing.
  1. A1 CHECK BATTERY CONDITION 
    • Carry out the Battery - Condition Test to determine if the battery can hold a charge and is OK for use. Refer to BATTERY, MOUNTING AND CABLES .
    • Does the battery pass the condition test? 
    • Yes  : GO to A2.
    • No  : INSTALL a new battery. REFER to BATTERY, MOUNTING AND CABLES . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  2. A2 RETRIEVE PCM DTCs 
    • Retrieve CMDTCs from all modules.
    • Do any charging system DTCs other than B1317, B1676 or P0563 exist? 
    • Yes  : REFER to the DTC CHART  for the correct pinpoint test and DIAGNOSE those DTCs first.
    • No  : GO to A3.
  3. A3 MONITOR PCM PID GENERATOR VOLTAGE DESIRED (GENVDSD) 
    • Start the engine.
    • NOTE: Many of the PCM PIDs selected will be monitored later in this pinpoint test.

      Select and monitor the following PCM PIDs:

      • Generator Monitor (GENMON).
      • Generator Command (GENCMD).
      • Generator Voltage Desired (GENVDSD).
      • Module Supply Voltage (VPWR).
    • Monitor the GENVDSD PID.
    • Does the GENVDSD PID indicate 15.1 volts or less? 
    • Yes  : GO to A4.
    • No  : GO to  A11.
  4. A4 MONITOR PCM PID GENERATOR VOLTAGE DESIRED (GENVDSD) 
    • With the engine still running at idle, measure battery voltage and record.
      Fig 1: Measuring Battery Voltage
      G06544266Courtesy of FORD MOTOR CO.
    • Monitor the GENVDSD PID.
    • Is battery voltage within ±0.6 volts of the PID GENVDSD? 
    • Yes  : The fault is not present at this time. This may indicate an intermittent fault. CARRY OUT a Wiggle Test on the charging system circuits to try and RECREATE the concern. CHECK generator connections for corrosion, loose connections and/or bent terminals. REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
    • No  : GO to A5.
  5. A5 CHECK THE A SENSE VOLTAGE 
    • Ignition OFF.
    • Disconnect: Generator C102A.
    • Ignition ON.
    • With ignition ON, measure battery voltage and record.
      Fig 2: Measuring Battery Voltage
      G06544266Courtesy of FORD MOTOR CO.
    • Measure the voltage between generator C102A-3, circuit SBB17 (RD), harness side and ground.
      Fig 3: Measuring Voltage Between Generator C102A-3, Circuit SBB17 (RD) And Ground
      G08645994Courtesy of FORD MOTOR CO.
    • Is the A sense voltage equal to battery voltage? 
    • Yes  : GO to A6.
    • No  : VERIFY Battery Junction Box (BJB) fuse 17 (10A) is OK. If OK, REPAIR corroded or loose connections at the battery positive C1100C, Battery Junction Box (BJB) C1035A, generator C102A and circuits SDC02 (RD) or SBB17 (RD). If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  6. A6 A SENSE CIRCUIT LOAD TEST 
    NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the SPECIAL TOOLS  . To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector.
    NOTE: This step puts a load on the A sense circuit. If there are corroded or loose connections, loading the circuit may help show the fault. A 250-350 mA incandescent 12-volt test lamp is required for this step. This circuit will not be loaded properly using an LED-style test lamp.
    • Using a 12-volt test lamp connected to ground, check for voltage at generator C102A-3, circuit SBB17 (RD), harness side.
      Fig 4: Checking For Voltage At C102A-3, Circuit SBB17 (RD) Using 12-Volt Test Lamp
      G06098957Courtesy of FORD MOTOR CO.
    • Does the test lamp illuminate? 
    • Yes  : GO to A7.
    • No  : REPAIR corroded or loose connections at the battery positive C1100C, Battery Junction Box (BJB) C1035A, generator C102A and circuits SDC02 (RD) or SBB17 (RD). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  7. A7 CHECK THE GENERATOR OUTPUT 
    • Connect: Generator C102A.
    • Start the engine.
    • Increase engine rpm until generator starts to generate output.
    • With the engine running, measure battery voltage and record.
      Fig 5: Measuring Battery Voltage
      G06544266Courtesy of FORD MOTOR CO.
    • Is the voltage above 14.5 volts? 
  8. A8 MONITOR PCM PIDs GENERATOR COMMAND (GENCMD), GENERATOR MONITOR (GENMON) AND GENERATOR VOLTAGE DESIRED (GENVDSD) 
    • Ignition OFF.
    • Disconnect: Generator C102A.
    • Connect a fused jumper wire between generator C102A-1, circuit CDC15 (VT), harness side and generator C102A-2, circuit CDC10 (BU/OG), harness side.
      Fig 6: Connecting Fused Jumper Wire Between Generator C102A-1, CDC15 (VT) And Generator C102A-2, Circuit CDC10 (BU/OG)
      G06065167Courtesy of FORD MOTOR CO.
    • Start the engine.
    • Monitor the GENVDSD, GENMON and GENCMD PIDs.
    • Using the active command, set GENVDSD PID to 14 volts.
    • Does the GENCMD PID read within 5% of GENMON PID? 
    • Yes  : GO to A9.
    • No  : GO to  A11.
  9. A9 COMPARE PCM MODULE SUPPLY VOLTAGE (VPWR) PID TO BATTERY VOLTAGE 
    • With the engine still running at idle, measure the battery voltage at the battery and monitor the PCM VPWR PID.
      Fig 7: Measuring Battery Voltage
      G06544266Courtesy of FORD MOTOR CO.
    • Does PCM VPWR PID accurately display battery voltage within ±0.5 volt? 
  10. A10 CHECK PCM SUPPLY VOLTAGE CIRCUITS 
    • Ignition OFF.
    • Remove the fused jumper wire from C102A.
    • Disconnect: Battery Junction Box Fuse 47 (15A).
    • Disconnect: (5.0L, 5.8L) PCM C175B.
    • Disconnect: (3.7L) PCM C1381B.
    • Inspect the connector pins for damage. Measure resistance between BJB fuse 47 (15A) output side and:
      • For 5.0L and 5.8L, PCM C175B-67, circuit CBB47 (GN/BU), harness side.
      • For 5.0L and 5.8L, PCM C175B-68, circuit CBB47 (GN/BU), harness side.
      • For 3.7L, PCM C1381B-67, circuit CBB47 (GN/BU), harness side.
      • For 3.7L, PCM C1381B-68, circuit CBB47 (GN/BU), harness side.
        Fig 8: Checking PCM Supply Voltage Circuits
        G08645999Courtesy of FORD MOTOR CO.
    • Are the resistances less than 0.5 ohm? 
    • Yes  : GO to A11.
    • No  : REPAIR high resistance or loose connections in the affected circuit(s). CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  11. A11 CHECK FOR CORRECT PCM OPERATION 
    • Ignition OFF.
    • Check the PCM harness and component side connectors for:
      • corrosion.
      • pushed-out pins and terminals.
      • damaged pins and terminals.
    • Connect the PCM and generator, make sure the connectors seat correctly.
    • Is the concern still present? 
    • Yes  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . CLEAR the DTCs. REPEAT the self-test. 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. CLEAR the DTCs. REPEAT the self-test.
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