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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1002 (Automatic Transmission (Re0F09B)) >> Component Diagnosis >> P1740 Lock Up Select Solenoid Valve >> 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 LOCK UP SELECT SOLENOID VALVE CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect TCM connector.
    3. Check resistance between TCM vehicle side harness connector terminal and ground.
    TERMINAL RESISTANCE REFERENCE

    TCM vehicle side harness connector Ground Resistance (Approx.)
    Connector Terminal
    F15 37 6.0 - 19.0 Ω

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: GO TO 2.

    Fig 1: Checking Resistance Between TCM Vehicle Side Harness Connector Terminal 37 And Ground
    G05689364Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK UP SELECT SOLENOID VALVE) (PART 1)
    1. Disconnect CVT unit connector.
    2. Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side harness connector terminal.
    TERMINAL CONTINUITY REFERENCE

    TCM vehicle side harness connector CVT unit vehicle side harness connector Continuity
    Connector Terminal Connector Terminal
    F15 (A) 37 F46 (B) 13 Existed

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace damaged parts.

    Fig 2: Checking Continuity Between TCM And CVT Unit Vehicle Side Harness Connector Terminals
    G05689365Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK UP SELECT SOLENOID VALVE) (PART 2)

    Check continuity between TCM vehicle side harness connector terminal and ground.

    TERMINAL CONTINUITY REFERENCE

    TCM vehicle side harness connector Ground Continuity
    Connector Terminal
    F15 37 Not existed

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair or replace damaged parts.

    Fig 3: Checking Continuity Between TCM Vehicle Side Harness Connector Terminal 37 And Ground
    G05689364Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK LOCK UP SELECT SOLENOID VALVE

    Check lock up select solenoid valve. Refer to "COMPONENT INSPECTION (LOCK UP SELECT SOLENOID VALVE) ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace transaxle assembly. Refer to "EXPLODED VIEW ".

  5. DETECT MALFUNCTIONING ITEMS

    Check TCM connector pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal? 

    YES: Replace TCM. Refer to "EXPLODED VIEW ".

    NO: Repair or replace damaged parts.

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