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Home › Lexus › 2007 › LS 460L › Repair and Diagnosis › External Pages › Different car › Section 629 (Power Control System) › Power Distribution System › Component Diagnosis › B2616 Ignition Relay Circuit › Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IGNITION RELAY POWER SUPPLY
    1. Turn ignition switch OFF.
    2. Disconnect ignition relay.
    3. Check voltage between ignition relay harness connector and ground under the following conditions.
    VOLTAGE SPECIFICATION

    Ignition relay Ground Condition Voltage (V)
    Terminal
    1 Ground Ignition switch OFF or ACC 0
    Ignition switch ON Battery voltage
    Fig 1: Checking Voltage Between Ignition Relay Harness Connector And Ground
    G05874213Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO  3

    NO: GO TO 2

  2. CHECK IGNITION RELAY POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect BCM harness connector.
    3. Check continuity between ignition relay harness connector (A) and BCM harness connector (B).
      CONTINUITY SPECIFICATION

      Ignition relay BCM Continuity
      Terminal Connector Terminal
      1 M19 70 Yes
      Fig 2: Checking Continuity Between Ignition Relay Harness Connector (A) And BCM Harness Connector (B)
      G05874214Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check continuity between ignition relay harness connector (A) and ground.
    CONTINUITY SPECIFICATION

    Ignition relay Ground Continuity
    Terminal
    1 Ground No

    Is the inspection result normal? 

    YES: GO TO  6

    NO: Repair or replace harness.

  3. CHECK IGNITION RELAY GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Check continuity between ignition relay harness connector and ground.
    CONTINUITY SPECIFICATION

    Ignition relay Ground Continuity
    Terminal
    2 Ground Yes
    Fig 3: Checking Continuity Between Ignition Relay Harness Connector And Ground
    G05874215Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 4

    NO: Repair or replace harness.

  4. CHECK IGNITION RELAY POWER SUPPLY CIRCUIT-2

    Check voltage between ignition relay harness connector and ground.

    VOLTAGE SPECIFICATION

    Ignition relay Ground Voltage (V)
    Terminal
    5 Ground Battery voltage
    Fig 4: Checking Voltage Between Ignition Relay Harness Connector And Ground
    G05874216Courtesy of NISSAN MOTOR CO., U.S.A.

    Is the inspection result normal? 

    YES: GO TO 5

    NO: Repair or replace harness.

  5. CHECK IGNITION RELAY

    Refer to "COMPONENT INSPECTION (IGNITION RELAY) ".

    Is the inspection result normal? 

    YES: GO TO 6

    NO: Replace ignition relay.

  6. CHECK INTERMITTENT INCIDENT

Refer to "INTERMITTENT INCIDENT ".

Inspection End.

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