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INTELLIGENT KEY UNIT : Diagnosis Procedure

  1. CHECK FUSE

    Check that the following fuse is not blown.

    TERMINAL SIGNAL REFERENCE

    Terminal No. Signal name Fuse No.
    11 Battery power supply 14 (10A)
    6 Ignition power supply 1 (10A)

    Is the fuse blown? 

    YES: Replace the blown fuse after repairing the affected circuit if a fuse is blown.

    NO: GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key unit connector.
    3. Check voltage between Intelligent Key unit harness connector and ground.
    VOLTAGE SPECIFICATION

    Terminal Voltage (V) (Approx.)
    (+) (-)
    Intelligent Key unit Ground
    Connector Terminal
    M40 11 Battery voltage
    6

    Is the measurement value normal? 

    YES: GO TO 3.

    NO: Repair harness or connector.

  3. CHECK GROUND CIRCUIT

    Check continuity between Intelligent Key unit harness connector and ground.

    CONTINUITY CHART

    Intelligent Key unit Ground Continuity
    Connector Terminal
    M40 12 Exists

    Does continuity exist? 

    YES: Intelligent Key unit power supply and ground circuit are OK.

    NO: Repair harness or connector.

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