ACTIVE TORQUE CONTROL 4WD SYSTEM, Diagnostic DTC:C1298

DTC Code DTC Name
C1298 Linear Solenoid Circuit

DESCRIPTION

The 4WD control ECU receives signals from each sensor to control clutch pressure to distribute torque according to the driving conditions.

DTC No. DTC Detection Condition Trouble Area
C1298

When the following continues for 1 second or more:

- With the current of the 0.8 A or more, an open or short in the linear solenoid circuit occurs.

  • 4WD fuse

  • Wire harness and connector

  • Electromagnetic control coupling

  • 4WD control ECU

WIRING DIAGRAM

A019OTVE01

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

Check the condition of each related circuit connector before troubleshooting Click here.

PROCEDURE


  1. CHECK WIRE HARNESS (4WD ECU - BATTERY)


    1. A019JTYE22
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to 4WD Control ECU)

      Disconnect the ECU connector.

    2. Measure the voltage of the wire harness side connector.

      Standard Voltage
      Tester Connection Condition Specified Condition
      O2-9 (BSLC) - Body Ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT ELECTROMAGNETIC CONTROL COUPLING (4WD LINEAR SOLENOID)


    1. A019NBLE03
      Text in Illustration
      *1 4WD Linear Solenoid

      Remove the coupling connector.

    2. Measure the resistance of the solenoid.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (BSF) - 2 (SLC) Always 2.2 to 2.6 Ω
      1 (BSF) - Body ground Always 10 kΩ or higher
      2 (SLC) - Body ground Always 10 kΩ or higher

    NG

    REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY Click here

    OK

  3. CHECK WIRE HARNESS (ELECTROMAGNETIC CONTROL COUPLING - 4WD CONTROL ECU)


    1. A019OLXE10
      Text in Illustration
      *1

      Front view of wire harness connector

      (to 4WD Linear Solenoid)
      *2

      Rear view of wire harness connector

      (to 4WD Control ECU)

      Disconnect the ECU connector.

    2. Measure the resistance of the wire harness side connector.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O2-13 (SLC+) - R5-1(BSF) Always Below 1 Ω
      O2-32 (SLC-) - R5-2 (SLC) Always Below 1 Ω
      O2-13 (SLC+) - Body ground Always 10 kΩ or higher
      O2-32 (SLC-) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE 4WD ECU ASSEMBLY (for RHD) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE 4WD ECU ASSEMBLY (for LHD) Click here