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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2437 (MULTIFUNCTION Electronic Modules) >> Diagnosis And Testing >> Smart Junction Box (SJB) >> 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 Mercury Mariner and 2010 Ford Escape. 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 DISCONNECT .
  1. C1 RECHECK THE SJB DTCs 
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: SJB  Self-Test.
    • Clear the DTCs. Repeat the SJB  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 PINPOINT TEST A: BATTERY CONDITION TEST , Battery Condition Test.
    • Is the battery OK and fully charged? 
  4. C4 CHECK THE SJB VOLTAGE SUPPLY 
    • Measure and record the voltage at the battery.
    • Disconnect: SJB  C2280G.
    • Ignition ON.
    • Measure the voltage between the SJB  C2280G-1, circuit SBB02 (YE/RD), harness side and ground.
      Fig 1: Measuring Voltage Between SJB C2280G-1, Circuit SBB02 (YE/RD) And Ground
      G06070671Courtesy 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 DTCs. REPEAT the self-test.
  5. C5 CHECK THE SJB GROUND CIRCUIT 
    • Ignition OFF.
    • Disconnect: Negative Battery Cable.
    • Disconnect: SJB  C2280D.
    • Measure the resistance between the SJB  C2280D-7, 8, 12, and 24, circuit GD182 (BK/GY), harness side and ground.
      Fig 2: Measuring Resistance Between SJB C2280D-7, 8, 12 And 24 Circuit GD182 (BK/GY), Harness Side And Ground
      G06134162Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  CONNECT the negative battery cable. 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 SJB OPERATION 
    • Disconnect the SJB  connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the SJB  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 SJB  . REFER to SMART JUNCTION BOX (SJB) . 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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