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Home › Infiniti › 2007 › FX45 › Repair and Diagnosis › Transmission › Automatic Transmission › DTC P0615 Start Signal Circuit › Diagnostic Procedure

Diagnostic Procedure

  1. CHECK STARTER RELAY 

    With CONSULT-II 

    1. Turn ignition switch ON.
    2. Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "A/T" with CONSULT-II and check monitor "STARTER RELAY" ON/OFF.
      3. Fig 1: Identifying CONSULT-II Display -- DATA MONITOR
      G04900946Courtesy of NISSAN MOTOR CO., U.S.A.
    STARTER RELAY (WITH CONSULT-II)

    Item name Condition Display value
    STARTER RELAY Selector lever in "N" and "P" positions. ON
    Selector lever in other positions. OFF

    Without CONSULT-II 

    1. Turn ignition switch ON.
    2. Check voltage between the IPDM E/R connector and ground.
      3. Fig 2: Identifying Voltage Between IPDM E/R Connector And Ground
      G04875858Courtesy of NISSAN MOTOR CO., U.S.A.
    STARTER RELAY (WITHOUT CONSULT-II)

    Name Connector Terminal Shift position Voltage (Approx.)
    Starter relay E9 53 - Ground "N" and "P" Battery voltage
    "R" and "D" 0 V

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 2.

  2. CHECK HARNESS BETWEEN A/T ASSEMBLY HARNESS CONNECTOR AND IPDM E/R CONNECTOR 
    1. Turn ignition switch OFF.
    2. Disconnect A/T assembly harness connector and IPDM E/R connector.
    3. Check continuity between A/T assembly harness connector and IPDM E/R connector.
      Fig 3: Identifying Continuity Between A/T Assembly Harness Connector And IPDM E/R Connector
      G04875859Courtesy of NISSAN MOTOR CO., U.S.A.
      A/T ASSEMBLY HARNESS CONNECTOR AND IPDM E/R CONNECTOR

      Item Connector Terminal Continuity
      A/T assembly harness connector F44 9 Yes
      IPDM E/R connector E9 53
    4. If OK, check harness for short to ground and short to power.
    5. Reinstall any part removed.

    OK or NG 

    OK: GO TO 3.

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

  3. CHECK TERMINAL CORD ASSEMBLY 
    1. Remove control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
    2. Disconnect A/T assembly harness connector and TCM connector.
    3. Check continuity between A/T assembly harness connector terminal and TCM connector terminal.
      Fig 4: Identifying A/T Assembly Harness Connector Terminal And TCM Connector Terminal Continuity
      G04875860Courtesy of NISSAN MOTOR CO., U.S.A.
      TERMINAL CORD ASSEMBLY

      Item Connector Terminal Continuity
      A/T assembly harness connector F44 9 Yes
      TCM connector F502 8
    4. If OK, check harness for short to ground and short to power.
    5. Reinstall any part removed.

    OK or NG 

    OK: GO TO 4.

    NG: Replace open circuit or short to ground and short to power in harness or connectors.

  4. DETECT MALFUNCTIONING ITEM 

    Check the following.

    OK or NG 

    OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".

    NG: Repair or replace damaged parts.

  5. CHECK DTC 

    Perform "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO  2.

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