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Home › Nissan-Datsun › 2004 › Sentra SE-R › Repair and Diagnosis › External Pages › Different car › Section 2311 (Engine Control System - DTCS P1217 To P2A03) › DTC P1554 Battery Current Sensor › Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2006 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground screws on the body. Refer to "GROUND INSPECTION ".
    Fig 1: Locating Body Ground Screws
    G04147964Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK : GO TO  2.

    NG : Repair or replace ground connections.

  2. CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT 
    1. Disconnect battery current sensor harness connector.
    2. Turn ignition switch ON.
      Fig 2: Locating Battery Current Sensor
      G04148434Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check voltage between battery current sensor terminal 1 and ground with CONSULT-II or tester.

      Voltage: Approximately 5V 

    OK or NG 

    OK : GO TO  4.

    NG : GO TO  3.

    Fig 3: Checking Voltage Between Harness Connector Terminal 1 And Ground
    G04147589Courtesy of NISSAN MOTOR CO., U.S.A.
  3. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E5, F14
    • Harness for open or short between battery current sensor and ECM

    : Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between battery current sensor terminal 2 and ECM terminal 67.

      Continuity should exist  .

    4. Also check harness for short to ground and short to power.

    OK or NG 

    OK : GO TO  6.

    NG : GO TO  5.

  5. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E5, F14
    • Harness for open or short between battery current sensor and ECM

    : Repair open circuit or short to ground or short to power in harness or connectors.

  6. CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Check harness continuity between battery current sensor terminal 3 and ECM terminal 71.

      Continuity should exist  .

    2. Also check harness for short to ground and short to power.

    OK or NG 

    OK : GO TO  8.

    NG : GO TO  7.

  7. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E5, F14
    • Harness for open or short between battery current sensor and ECM

    : Repair open circuit or short to ground or short to power in harness or connectors.

  8. CHECK BATTERY CURRENT SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK : GO TO  9.

    NG : Replace battery negative cable assembly.

  9. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    : INSPECTION END 

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