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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 910 (Transfer Case) >> DTC/Circuit Diagnosis >> DTC P1822: Clutch Pressure Solenoid >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. 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
      G04901517Courtesy of NISSAN NORTH AMERICA, INC.
      Connector Terminal Condition Voltage (Approx.)
      E142 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 E142 terminal 19 and transfer terminal cord assembly harness connector F56 terminal 6.

      Continuity should exist. 

      Fig 2: Checking Continuity Between Transfer Control Unit Harness Connector E142 Terminal 19 And Transfer Terminal Cord Assembly Harness Connector F56 Terminal 6
      G04901518Courtesy 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. 

      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.

      Fig 3: Checking Continuity Between Transfer Dropping Resistor Harness Connector E135 Terminal 2 And Connector F56 Terminal 6
      G04901519Courtesy of NISSAN NORTH AMERICA, INC.
  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 E142 terminal 10 and transfer dropping resistor harness connector E135 terminal 1.

      Continuity should exist. 

      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.

      Fig 4: Checking Continuity Between Transfer Control Unit Harness Connector E142 Terminal 10 And Connector E135 Terminal 1
      G04901520Courtesy of NISSAN NORTH AMERICA, INC.
  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. 

      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.

      Fig 5: Checking Continuity Between Transfer Terminal Cord Assembly Harness Connector F56 Terminal 19 And Ground
      G04901521Courtesy of NISSAN NORTH AMERICA, INC.
  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 

      Are the inspection results normal? 

      YES: GO TO 6.

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

      Fig 6: Checking Resistance Between Transfer Terminal Cord Assembly Harness Connector F56 Terminals 6 And 19
      G04901522Courtesy of NISSAN NORTH AMERICA, INC.
  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 

      Are the inspection results normal? 

      YES: GO TO 7.

      NO: Replace transfer dropping resistor.

      Fig 7: Checking Resistance Between Transfer Dropping Resistor Terminals 1 And 2
      G04901523Courtesy of NISSAN NORTH AMERICA, INC.
  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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