FixVault
Home › Infiniti › 2024 › Q50 Luxe, RWD › Repair and Diagnosis › Engine Performance › System › Engine Control System (DTCS) (6 Of 7) › Engine (ECM) › P1554 Battery Current Sensor › Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING 

    TESTING CONDITION:

    • Before performing the following procedure, confirm that battery voltage is more than 12.8 V at idle.
    • Before performing the following procedure, confirm that all load switches and A/C switch are turned OFF.

    >>

    GO TO 2.

  2. PERFORM COMPONENT FUNCTION CHECK 
    NOTE: Use component function check to check the overall function of the battery current sensor circuit. During this check, a 1st trip DTC might not be confirmed.

    SYMBOL With CONSULT

    1. Start engine and let it idle.
    2. Select "BAT CUR SEN" in "DATA MONITOR" mode with CONSULT.
    3. Check "BAT CUR SEN" indication for 10 seconds.

      "BAT CUR SEN" should be above 2, 300 mV at least once.

    SYMBOL Without CONSULT

    1. Start engine and let it idle.
    2. Check the voltage between ECM harness connector terminals as per the following.
      ECM Voltage (V)
      + -
      Connector Terminal Connector Terminal
      F143 56
      (Battery current sensor signal)      		 F143 29 Above 2.3 at least once

    Is the inspection result normal?

    YES-1>>

    To check malfunction symptom before repair: Refer to Inspection .

    YES-2>>

    Confirmation after repair: INSPECTION END

    NO>>

    Refer to DTC Diagnosis Procedure .

About FixVault