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HOMESERVICE MANUALSNISSAN-DATSUN2024FRONTIER SL, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM (DTC/CIRCUIT DIAGNOSIS) (5 OF 6)DTC/CIRCUIT DIAGNOSISDTC P1554: BATTERY CURRENT SENSORDTC CONFIRMATION PROCEDURE
2024 Nissan-Datsun Frontier SL, RWD

DTC Confirmation Procedure

2024 Nissan-Datsun Frontier SL, RWDSECTION DTC 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 
    1. Start engine and let it idle.
    2. Check the voltage between ECM harness connector and ground.
      ECM Voltage (Approx.)
      Connector + -
      Terminal Terminal
      F78 56 (Battery current sensor signal) 29 (Sensor ground) Above 2.3 V at least once.

    Is 1st trip DTC detected?

    >>

    Proceed to Diagnosis Procedure .

    >>

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    >>

    Confirmation after repair: INSPECTION END

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.