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Home >> Infiniti >> 2006 >> M35 Base >> 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. (Do not start engine.)
    2. Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "A/T" with CONSULT-II and check monitor "STARTER RELAY" ON/OFF.
    STARTER RELAY CONDITION - DISPLAY VALUE

    Item name Condition Display value
    STARTER RELAY Selector lever in "N""P" positions. ON
    Selector lever in "R""D" positions. OFF
    Fig 1: Identifying CONSULT II DATA MONITOR Display
    G04139169Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    1. Turn ignition switch ON. (Do not start engine.)
    2. Check voltage between the IPDM E/R connector and ground.
    IPDM E/R CONNECTOR AND GROUND VOLTAGE

    Item Connector Terminal Shift position Voltage (Approx.)
    Starter relay E9 53 Ground "N""P" Battery voltage
    "R""D" 0V
    Fig 2: Identifying Voltage Between IPDM E/R Connector And Ground
    G04139170Courtesy of NISSAN MOTOR CO., U.S.A.

    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.
      A/T ASSEMBLY AND IPDM E/R CONNECTOR CONTINUITY

      Item Connector Terminal Continuity
      A/T assembly harness connector F42 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.

    Fig 3: Identifying Continuity Between A/T Assembly And IPDM E/R Connector
    G04139171Courtesy of NISSAN MOTOR CO., U.S.A.
  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.
      A/T ASSEMBLY AND TCM CONNECTOR TERMINALS CONTINUITY

      Item Connector Terminal Continuity
      A/T assembly harness connector F42 9 Yes
      TCM connector F502 8
      Fig 4: Identifying Continuity Between A/T Assembly And TCM Connector Terminals
      G04139172Courtesy of NISSAN MOTOR CO., U.S.A.
    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". Refer to "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO 2.

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