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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2242 (LAN System (Can)) >> DTC/Circuit Diagnosis >> I-Key Branch Line Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONNECTOR
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the terminals and connectors of the Intelligent Key unit for damage, bend and loose connection (unit side and connector side).

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT
    1. Disconnect the connector of Intelligent Key unit.
    2. Check the resistance between the Intelligent Key unit harness connector terminals.
      Intelligent Key unit harness connector Resistance (Ω)
      Connector No. Terminal No.
      M164 2 3 Approx. 54 - 66

    Is the measurement value within the specification? 

    YES: GO TO 3.

    NO: Repair the Intelligent Key unit branch line.

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT

    Check the power supply and the ground circuit of the Intelligent Key unit. Refer to "INTELLIGENT KEY UNIT: DIAGNOSIS PROCEDURE ".

    Is the inspection result normal? 

    YES (Present error)>>Replace the Intelligent Key unit.

    YES (Past error)>>Error was detected in the Intelligent Key unit branch line.

    NO: Repair the power supply and the ground circuit.

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