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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1063 (Transfer Case (ATX14B)) >> DTC/Circuit Diagnosis >> DTC P1822: Clutch Pressure Solenoid >> 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 CLUTCH PRESSURE SIGNAL

    With CONSULT 

    1. Start engine.
    2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT.
    3. Read out the value of DUTY SOLENOID.
      Condition Display value
      • Vehicle stopped
      • Engine running
      • A/T selector lever N position
      • Brake pedal depressed
      		 4WD shift switch: 2WD 4%
      4WD shift switch: AUTO 96 - 4%
      4WD shift switch: 4H or 4LO 4%

    Without CONSULT 

    1. Start engine.
    2. Check voltage between transfer control unit harness connector terminal and ground.
      Fig 1: Checking Voltage Between Transfer Control Unit Harness Connector Terminal And Ground
      G08165855Courtesy of NISSAN NORTH AMERICA, INC.
      Connector Terminal Condition Voltage (Approx.)
      M152 10 - Ground
      • Vehicle stopped
      • Engine running
      • A/T selector lever N position
      • Brake pedal depressed
      		 4WD shift switch: AUTO 4 - 14V
      4WD shift switch: 2WD, 4H or 4LO Less than 1V
      19 - Ground
      • Vehicle stopped
      • Engine running
      • A/T selector lever N position
      • Brake pedal depressed
      		 4WD shift switch: AUTO 1.5 - 3V
      4WD shift switch: 2WD, 4H or 4LO Less than 1V

      Are the inspection results normal? 

      YES: GO TO  7.

      NO: GO TO 2.

  2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND CLUTCH PRESSURE SOLENOID VALVE
    1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector, transfer terminal cord assembly harness connector and transfer dropping resistor.
    3. Check continuity between transfer control unit harness connector M152 terminal 19 and transfer terminal cord assembly harness connector F56 terminal 6.

      Continuity should exist  .

      Fig 2: Checking Continuity Between Transfer Control Unit Connector M152 Terminal 19 And Transfer Terminal Cord Assembly Connector F56 Terminal 6
      G08165856Courtesy of NISSAN NORTH AMERICA, INC.
    4. Check continuity between transfer dropping resistor harness connector E135 terminal 2 and transfer terminal cord assembly harness connector F56 terminal 6.

      Continuity should exist  .

      Fig 3: Checking Continuity Between Transfer Dropping Resistor Connector E135 Terminal 2 And Transfer Terminal Cord Assembly Connector F56 Terminal 6
      G08165857Courtesy of NISSAN NORTH AMERICA, INC.

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

      Are the inspection results normal? 

      YES: GO TO 3.

      NO: Repair or replace damaged parts.

  3. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER DROPPING RESISTOR
    1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
    2. Disconnect transfer control unit harness connector and transfer dropping resistor harness connector.
    3. Check continuity between transfer control unit harness connector M152 terminal 10 and transfer dropping resistor harness connector E135 terminal 1.

      Continuity should exist  .

      Fig 4: Checking Continuity Between Transfer Control Unit Connector M152 Terminal 10 And Transfer Dropping Resistor Connector E135 Terminal 1
      G08165858Courtesy of NISSAN NORTH AMERICA, INC.

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

      Are the inspection results normal? 

      YES: GO TO 4.

      NO: Repair or replace damaged parts.

  4. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
    2. Disconnect transfer terminal cord assembly harness connector.
    3. Check continuity between transfer terminal cord assembly harness connector F56 terminal 19 and ground.

      Continuity should exist  .

      Fig 5: Checking Continuity Between Transfer Terminal Cord Assembly Harness Connector F56 Terminal 19 And Ground
      G08165859Courtesy of NISSAN NORTH AMERICA, INC.

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

      Are the inspection results normal? 

      YES: GO TO 5.

      NO: Repair open circuit or short to ground or short to power in harness or connectors.

  5. CHECK CLUTCH PRESSURE SOLENOID
    1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
    2. Disconnect transfer terminal cord assembly harness connector.
    3. Check resistance between transfer terminal cord assembly harness connector F56 terminals 6 and 19.

      6 - 19: Approx. 3.0 - 3.4 Ω 

      Fig 6: Checking Resistance Between Transfer Terminal Cord Assembly Terminals 6 And 19
      G08165860Courtesy of NISSAN NORTH AMERICA, INC.

      Are the inspection results normal? 

      YES: GO TO 6.

      NO: Replace clutch pressure solenoid. Refer to "COMPONENT PARTS LOCATION ".

  6. CHECK TRANSFER DROPPING RESISTOR
    1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
    2. Disconnect transfer dropping resistor harness connector.
    3. Check resistance between transfer dropping resistor terminals 1 and 2.

      1 - 2: Approx. 11.2 - 12.8 Ω 

      Fig 7: Checking Resistance Between Transfer Dropping Resistor Terminals 1 And 2
      G08165861Courtesy of NISSAN NORTH AMERICA, INC.

      Are the inspection results normal? 

      YES: GO TO 7.

      NO: Replace transfer dropping resistor.

  7. CHECK TRANSFER CONTROL UNIT

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

    Are the inspection results normal? 

    YES: GO TO 8.

    NO: Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

  8. CHECK DTC

    Drive the vehicle and then perform self-diagnosis.

    Are the inspection results normal? 

    YES: Inspection End.

    NO: Replace transfer control unit. Refer to "REMOVAL AND INSTALLATION ".

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