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Home >> Infiniti >> 2013 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1550 To P2542 >> DTC P1550: Battery Current Sensor >> Component Inspection (Battery Current Sensor)
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Component Inspection (Battery Current Sensor)

  1. CHECK BATTERY CURRENT SENSOR 
    1. Turn ignition switch OFF.
    2. Reconnect harness connectors disconnected.
    3. Disconnect battery negative cable.
    4. Install jumper cable between battery negative terminal and body ground.
      5. Fig 1: Installing Jumper Cable
      G08855425Courtesy of NISSAN NORTH AMERICA, INC.
    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.

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