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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2239 (Transfer Case (ATX14B)) >> DTC/Circuit Diagnosis >> DTC P1817: Actuator Motor >> 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 ACTUATOR MOTOR SIGNAL

    With CONSULT 

    1. Start engine.
    2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT.
    3. Read out the value of "SHIFT ACT1", "SHIFT AC MON1", "SHIFT ACT2" and "SHIFT AC MON2".
      Monitored item Condition Display value
      SHIFT ACT1
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4H to 4LO ("Wait" function is operating.) ON
      Except the above OFF
      SHIFT AC MON1
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4H to 4LO ("Wait" function is operating.) ON
      Except the above OFF
      SHIFT ACT2
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4LO to 4H ("Wait" function is operating.) ON
      Except the above OFF
      SHIFT AC MON2
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4LO to 4H ("Wait" function is operating.) ON
      Except the above OFF

    Without CONSULT 

    1. Start engine.
    2. Check voltage between transfer control unit harness connector terminal and ground.
      Connector Terminal Condition Voltage (Approx.)
      M152 4 - Ground
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4H to 4LO ("Wait" function is operating.) Battery voltage
      Except the above 0V
      13 - Ground
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4LO to 4H ("Wait" function is operating.) Battery voltage
      Except the above 0V
      M153 33 - Ground
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4H to 4LO ("Wait" function is operating.) Battery voltage
      Except the above 0V
      42 - Ground
      • Vehicle stopped
      • Engine running
      • A/T selector lever "N" position
      • Brake pedal depressed
      		 4WD shift switch: 4LO to 4H ("Wait" function is operating.) Battery voltage
      Except the above 0V
      Fig 1: Checking Voltage Between Transfer Control Unit Harness Connector Terminal 4, 13, 33, 42 And Ground
      G08165830Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO  7.

      NG: GO TO 2.

  2. CHECK ACTUATOR MOTOR POWER SUPPLY CIRCUIT
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Remove transfer shift high relay and transfer shift low relay.
    3. Check voltage between transfer shift high relay harness connector E46 terminal 5, transfer shift low relay harness connector E47 terminal 5 and ground.
      Connector Terminal Voltage (Approx.)
      E46 5 - Ground Battery voltage
      E47 5 - Ground
      Fig 2: Checking Voltage Between Transfer Shift High Relay Connector Terminal, Transfer Shift Low Relay Connector Terminal And Ground
      G08165831Courtesy of NISSAN NORTH AMERICA, INC.
    4. Turn ignition switch "ON". (Do not start engine.)
    5. Check voltage between transfer shift high relay harness connector E46 terminal 5, transfer shift low relay harness connector E47 terminal 5 and ground.
      Connector Terminal Voltage (Approx.)
      E46 5 - Ground Battery voltage
      E47 5 - Ground
      Fig 3: Checking Voltage Between Transfer Shift High Relay Connector Terminal 5, Transfer Shift Low Relay Connector Terminal 5 And Ground
      G08165832Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO 3.

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

      • 20A fuse (No. 58, located in the fuse and relay box).
      • Harness for short or open between battery, transfer shift high harness connector terminal 5 and transfer shift low harness connector terminal 5.
  3. CHECK ACTUATOR MOTOR GROUND CIRCUIT
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Remove transfer shift high relay and transfer shift low relay. Refer to "COMPONENT PARTS LOCATION ".
    3. Check continuity between transfer shift high relay harness connector E46 terminals 1 and 4, and transfer shift low relay harness connector E47 terminals 1 and 4 and ground.

      Continuity should exist  .

      Fig 4: Checking Continuity Between Transfer Shift High Relay Harness Connector E46 Terminals 1 And 4 And Ground
      G08165833Courtesy of NISSAN NORTH AMERICA, INC.

      Also check harness for short to power.

      OK or NG 

      OK: GO TO 4.

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

  4. CHECK TRANSFER SHIFT RELAYS
    1. Turn ignition switch "OFF".
    2. Remove transfer shift high relay and transfer shift low relay.
    3. Apply 12V direct current between transfer shift relay terminals 1 and 2.
    4. Check continuity between relay terminals 3 and 4, 3 and 5.
      Terminal Condition Continuity
      3 - 4 12V direct current supply between terminals 1 and 2 No
      OFF Yes
      3 - 5 12V direct current supply between terminals 1 and 2 Yes
      OFF No
      Fig 5: Checking Continuity Between Relay Terminals 3 And 4, 3 And 5
      G08165834Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO 5.

      NG: Replace the transfer shift relay.

  5. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER SHIFT RELAY
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector and the transfer control device (actuator motor) harness connector.
    3. Remove transfer shift high relay and transfer shift low relay.
    4. Check continuity between the following terminals.
      • Transfer control unit harness connector M152 terminal 4 and transfer shift high relay harness connector E46 terminal 2.
      • Transfer control unit harness connector M152 terminal 13 and transfer shift low relay harness connector E47 terminal 2.
        Fig 6: Checking Continuity Between Transfer Control Unit Connector Terminal And Transfer Shift High Relay Connector Terminal
        G08165835Courtesy of NISSAN NORTH AMERICA, INC.
      • Transfer control unit harness connector M153 terminal 33 and transfer shift high relay harness connector E46 terminal 3.
      • Transfer control unit harness connector M153 terminal 42 and transfer shift low relay harness connector E47 terminal 3.

        Continuity should exist  .

        Fig 7: Checking Continuity Between Transfer Control Unit Connector Terminal And Transfer Shift High Relay Connector Terminal
        G08165836Courtesy of NISSAN NORTH AMERICA, INC.

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

      OK or NG 

      OK: GO TO 6.

      NG: Repair or replace damaged parts.

  6. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR MOTOR
    1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector and the transfer control device (actuator motor) harness connector.
    3. Check continuity between the following terminals.
      • Transfer control unit harness connector M153 terminal 33 and transfer control device (actuator motor) harness connector F58 terminal 21.
      • Transfer control unit harness connector M153 terminal 42 and transfer control device (actuator motor) harness connector F58 terminal 24.

        Continuity should exist  .

        Fig 8: Checking Continuity Transfer Control Unit And Actuator Motor
        G08165837Courtesy of NISSAN NORTH AMERICA, INC.

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

      OK or NG 

      OK: GO TO 7.

      NG: Repair or replace damaged parts.

  7. CHECK ACTUATOR MOTOR
    1. Remove transfer control device. Refer to "REMOVAL AND INSTALLATION ".
    2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24.
      CAUTION:
      • Do not operate actuator motor for more than 1 second.
      • Change the actuator motor position to "HIGH" when installing.
      • Be careful not to overheat the harness.
      Terminal Actuator motor
      21 (Battery voltage) - 24 (Ground) Clockwise rotate
      24 (Battery voltage) - 21 (Ground) Counterclockwise rotate
      Fig 9: Applying Battery Voltage To Transfer Control Device (Actuator Motor) Terminals 21 And 24
      G08165838Courtesy of NISSAN NORTH AMERICA, INC.
    3. Check resistance between transfer control device (actuator motor) terminals 21 and 24.

      21 - 24: Approx. 0.2 Ω 

      Fig 10: Checking Resistance Between Transfer Control Device (Actuator Motor) Terminals 21 And 24
      G08165839Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: GO TO 8.

      NG: Replace transfer control device (actuator motor).

  8. CHECK TRANSFER CONTROL UNIT

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

    OK or NG 

    OK: GO TO 9.

    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.

  9. CHECK DTC

    Perform the self-diagnosis, after driving a vehicle for a while.

    OK or NG 

    OK: Inspection End.

    NG: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".

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