LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2239 (Transfer Case (ATX14B)) >> Symptom Diagnosis >> 4WD Shift Indicator Lamp And 4LO Indicator Lamp Do Not Turn On >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

  1. CHECK TRANSFER CONTROL UNIT POWER SUPPLY CIRCUIT
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Connect transfer control unit harness connector.
    3. Check voltage between transfer control unit harness connector terminals and ground.
      Connector Terminal Voltage (Approx.)
      M152 16 - Ground 0V
      22 - Ground
      M153 29 - Ground
      30 - Ground Battery voltage
      47 - Ground
      Fig 1: Checking Voltage Between Transfer Control Unit Harness Connector Terminals And Ground (Ignition Switch OFF)
      G08165899Courtesy of NISSAN NORTH AMERICA, INC.
    4. Turn ignition switch "ON". (Do not start engine.)
    5. Check voltage between transfer control unit harness connector terminals and ground.
      Connector Terminal Voltage (Approx.)
      M152 16 - Ground Battery voltage
      22 - Ground
      M153 29 - Ground
      30 - Ground 0V
      47 - Ground Battery voltage
      Fig 2: Checking Voltage Between Transfer Control Unit Harness Connector Terminals And Ground (Ignition Switch ON)
      G08165900Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO 2.

      NG: Check the following. If any items are damaged, repair or replace damaged parts.

      • 10A fuses [No. 18 located in fuse block (J/B) and No. 59 (located in the fuse and relay box)].
      • Harness for short or open between battery and transfer control unit harness connector M153 terminals 47.
      • Harness for short or open between ignition switch and transfer control unit harness connector M153 terminal 29.
      • Harness for short or open between battery and transfer shut off relay harness connector E155 terminal 1 and 3.
      • Harness for short or open between transfer shut off relay harness connector E155 terminal 2 and transfer control unit harness connector M153 terminal 30.
      • Harness for short or open between transfer shut off relay harness connector E155 terminal 5 and transfer control unit harness connector M152 terminals 16 and 22.
      • Battery and ignition switch.
      • Transfer shut off relay. Refer to "DIAGNOSIS PROCEDURE ".
  2. CHECK TRANSFER CONTROL UNIT GROUND CIRCUIT
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector.
    3. Check continuity between transfer control unit harness connector M152 terminals 3 and 6, and M153 terminal 45 and ground.

      Continuity should exist  .

      Fig 3: Checking Continuity Between Transfer Control Unit Connector M152 Terminals 3 And 6 And M153 Terminal 45 And Ground
      G08165901Courtesy of NISSAN NORTH AMERICA, INC.

      Also check harness for short to power.

      OK or NG 

      OK: GO TO 3.

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

  3. CHECK COMBINATION METER POWER SUPPLY CIRCUIT
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector.
    3. Check voltage between combination meter harness connector terminal and ground.
      Connector Terminal Voltage (Approx.)
      M24 16 - Ground 0V
      Fig 4: Checking Voltage Between Combination Meter Harness Connector Terminal 16 And Ground (Ignition Switch Off)
      G08165902Courtesy of NISSAN NORTH AMERICA, INC.
    4. Turn ignition switch "ON". (Do not start engine.)
    5. Check voltage between combination meter harness connector terminal and ground.
      Connector Terminal Voltage (Approx.)
      M24 16 - Ground Battery voltage
      Fig 5: Checking Voltage Between Combination Meter Harness Connector Terminal 16 And Ground (Ignition Switch On)
      G08165903Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO 4.

      NG: Check the following. If any items are damaged, repair or replace damaged parts.

      • 10A fuse [No. 14, located in the fuse block (J/B)].
      • Harness for short or open between ignition switch and combination meter harness connector M24 terminal 16.
      • Ignition switch.
  4. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector and combination meter harness connector.
    3. Check continuity between the following terminals.
      • Transfer control unit harness connector M152 terminal 2 and combination meter harness connector M24 terminal 30.
      • Transfer control unit harness connector M152 terminal 11 and combination meter harness connector M24 terminal 27.
      • Transfer control unit harness connector M152 terminal 12 and combination meter harness connector M24 terminal 29.
      • Transfer control unit harness connector M152 terminal 21 and combination meter harness connector M24 terminal 28.

        Continuity should exist  .

        Fig 6: Checking Continuity Between Transfer Control Unit Connector M152 Terminal 2 And Combination Meter Connector M24 Terminal 30
        G08165904Courtesy of NISSAN NORTH AMERICA, INC.

      Also check harness for short to ground and short to power.

      OK or NG 

      OK: GO TO 5.

      NG: Repair or replace damaged parts.

  5. CHECK INDICATOR LAMP CIRCUIT
    1. Connect combination meter harness connector.
    2. Disconnect transfer control unit harness connector.
    3. Turn ignition switch "ON".
    4. Ground the following terminals using suitable wiring.
      • Transfer control unit harness connector M152 terminal 2 and ground.
      • Transfer control unit harness connector M152 terminal 11 and ground.
      • Transfer control unit harness connector M152 terminal 12 and ground.
      • Transfer control unit harness connector M152 terminal 21 and ground.

      Do indicator lamps turn on? 

      OK: GO TO 6.

      NG: Replace combination meter. Refer to "REMOVAL AND INSTALLATION ".

      Fig 7: Checking Transfer Control Unit Harness Connector E142 Terminal 2, 11, 12, 21 And Ground
      G08165905Courtesy of NISSAN NORTH AMERICA, INC.
  6. SYMPTOM CHECK

    Check again.

    OK or NG 

    OK: Inspection End.

    NG: GO TO 7.

  7. CHECK TRANSFER CONTROL UNIT

    Check transfer control unit input/output signal. Refer to "REFERENCE VALUE ".

    OK or NG 

    OK: Inspection End.

    NG: Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

scientia non olet · About LEMON Manuals