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Home >> Infiniti >> 2008 >> G37 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - G37 Coupe - DTC P1148 Through P2A03 >> P1550 Battery Current Sensor >> Component Inspection
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Component Inspection

  1. CHECK BATTERY CURRENT SENSOR
    1. Turn ignition switch OFF.
    2. Reconnect harness connectors disconnected.
    3. Disconnect battery negative cable (1).
      Fig 1: Identifying Battery Negative Cable And Jumper Cable
      G05733511Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Install jumper cable (A) between battery negative terminal and body ground.
    5. Turn ignition switch ON.
    6. Check the voltage between ECM harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      ECM Ground Voltage
      Connector Terminal
      F102 91 (Battery current sensor signal) Ground Approx. 2.5V

      Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to "HOW TO HANDLE BATTERY ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace battery negative cable assembly.