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

C1298/98

Linear Solenoid Circuit

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

  • IG1 voltage is 9.5 V or more.

  • The current requested by the 4WD linear solenoid (transmission coupling 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 (Transmission coupling assembly)

  • 4WD ECU assembly

WIRING DIAGRAM

C279204E02

CAUTION / NOTICE / HINT

Tip:

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. C270074C08

      *a

      Front view of wire harness connector

      (to 4WD ECU Assembly)

      Disconnect the 4WD ECU assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G86-2 (SLC+) - G86-1 (SLC-)

      20°C (68°F)

      2.2 to 2.6 Ω

      G86-2 (SLC+) - Body ground

      Always

      10 kΩ or higher

      G86-1 (SLC-) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE 4WD ECU ASSEMBLY

    Click here

    NG

  2. INSPECT TRANSMISSION COUPLING ASSEMBLY

    1. C131916C01

      *a

      Component without harness connected

      (4WD Linear Solenoid [Transmission Coupling Assembly])

      Disconnect the P1 4WD linear solenoid (transmission coupling 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 TRANSMISSION COUPLING ASSEMBLY

    Click hereClick here