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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 DATA MONITOR
    1. Turn ignition switch ON.
    2. Check IGN RLY1-REQ and IGN RLY status with CONSULT-III. Refer to "CONSULT - III FUNCTION (IPDM E/R) ".

    Do IGN RLY1-REQ and IGN RLY signals change as expected? 

    YES: Refer to "INTERMITTENT INCIDENT ".

    NO: IGN RLY1-REQ does not change. GO TO 2.

    NO: IGN RLY does not change. GO TO  3.

  2. CHECK CAN COMMUNICATION

    Check CAN communication. Refer to "CAN SYSTEM SPECIFICATION CHART ".

    Is the inspection result normal? 

    YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

    NO: Repair harness of connector.

  3. CHECK IGNITION RELAY SIGNAL
  1. Turn ignition switch OFF.
  2. Check voltage between IPDM E/R harness connector and ground.
    VOLTAGE SPECIFICATION

    (+) (-) Voltage
    IPDM E/R
    Connector Terminal
    E18 27 Ground Battery voltage
    Fig 1: Checking Voltage Between IPDM E/R Harness Connector And Ground
    G05878933Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Turn ignition switch ON.
  4. Check voltage between IPDM E/R harness connector and ground.
VOLTAGE SPECIFICATION

(+) (-) Voltage
IPDM E/R
Connector Terminal
E18 27 Ground 0 V
Fig 2: Checking Voltage Between IPDM E/R Harness Connector And Ground
G05878934Courtesy of NISSAN MOTOR CO., U.S.A.

Are the inspection results normal? 

YES: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION ".

NO: Repair harness of connector.

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