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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 5)) >> DTC/Circuit Diagnosis >> DTC P1556: Battery Temperature Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BATTERY TEMPERATURE SENSOR INPUT SIGNAL 
    1. Disconnect battery current sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between battery current sensor harness connector and ground.

      +

      -

      Voltage (V)

      Battery current sensor

      Connector

      Terminal

      F5

      1

      Ground

      Approx. 5

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 2.

  2. CHECK BATTERY TEMPERATURE SENSOR INPUT SIGNAL CIRCUIT 
    1. Turn ignition switch ON.
    2. Disconnect ECM harness connector.
    3. Check the continuity between battery current sensor harness connector and ECM harness connector.

      +

      -

      Continuity

      Battery current sensor

      ECM

      Connector

      Terminal

      Connector

      Terminal

      F5

      2

      F14

      68

      Existed

    Is the inspection result normal?

    YES

    Perform the trouble diagnosis for power supply circuit.

    NO

    Repair or replace error-detected parts.

  3. CHECK BATTERY TEMPERATURE SENSOR GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between battery current sensor harness connector and ECM harness connector.

      +

      -

      Continuity

      Battery current sensor

      ECM

      Connector

      Terminal

      Connector

      Terminal

      F5

      3

      F14

      64

      Existed

    4. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair open circuit, short to ground or short to power in harness or connectors.

  4. CHECK BATTERY TEMPERATURE SENSOR 

    Check battery temperature sensor. Refer to Component Inspection (Battery Temperature Sensor) .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace battery negative cable assembly.