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Home >> Infiniti >> 2015 >> QX80 Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Trouble Codes (DTCS) P0181-P1550) >> DTC/Circuit Diagnosis >> DTC P1550: Battery Current Sensor >> Component Inspection (Battery Current Sensor) >> Diagnostic Test
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Diagnostic Test

  1. CHECK BATTERY CURRENT SENSOR

    1. Turn ignition switch OFF.
    2. Reconnect harness connectors disconnected.
    3. Disconnect battery negative cable.
      Fig 1: Installing Jumper Cable Between Battery Negative Terminal And Body Ground
      G07051261Courtesy of NISSAN NORTH AMERICA, INC.
      ARROWF : To body ground
    4. Install jumper cable between battery negative terminal and body ground.
    5. Turn ignition switch ON.
    6. Check the voltage between ECM harness connector terminals under the following conditions.
      ECM Voltage (V)
      Connector + -
      Terminal Terminal
      E80 138
      (Battery current sensor signal)
      150 Approx. 2.5

      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.