DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM, Diagnostic DTC:C1298/98

DTC Code DTC Name
C1298/98 Linear Solenoid Circuit

DESCRIPTION

The 4WD ECU assembly receives signals from each sensor to control clutch fluid pressure for limiting the center differential operation, which distributes torque according to the driving conditions.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
C1298/98 Linear Solenoid Circuit

When all of the following continue for 1 second or more:


  • The current requested by the 4WD linear solenoid (electro magnetic control coupling sub-assembly) is either 0 A or greater than 0.8 A.

  • Open or short occurs in the linear solenoid circuit.

  • Wire harness and connector

  • 4WD linear solenoid (Electro magnetic control coupling sub-assembly)

  • 4WD ECU assembly

 DTC stored

WIRING DIAGRAM

A002BT7E06
*a 4WD Linear Solenoid
*b Electro Magnetic Control Coupling Sub-assembly
*c 4WD ECU Assembly

CAUTION / NOTICE / HINT

Tech Tips

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - TRANSMISSION COUPLING ASSEMBLY)


    1. A002COYC30
      *a

      Front view of wire harness connector

      (to 4WD ECU Assembly)

      Disconnect the F14 4WD ECU assembly connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F14-2 (SLC+) - F14-1 (SLC-) 20°C (68°F) 2.2 to 2.6 Ω
      F14-2 (SLC+) - Body ground Always 10 kΩ or higher
      F14-1 (SLC-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE 4WD ECU ASSEMBLY Click here

    NG

  2. INSPECT ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY


    1. A00286YC01
      *a

      Component without harness connected

      (4WD Linear Solenoid (Electro Magnetic Control Coupling Sub-assembly))

      Disconnect the O4 4WD linear solenoid (electro magnetic control coupling sub-assembly) connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (BSF) - 2 (SLC) 20°C (68°F) 2.2 to 2.6 Ω
      1 (BSF) - Body ground Always 10 kΩ or higher
      2 (SLC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY Click here