DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM 4WD Control Switch Circuit

DTC Code DTC Name
4WD Control Switch Circuit

DESCRIPTION

The 4WD ECU assembly changes the control mode in response to "Auto Mode" and "Lock Mode" signals from the 4WD/AWD lock switch (differential lock switch).

WIRING DIAGRAM

C200873E10

CAUTION / NOTICE / HINT

Tip:

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE

  1. INSPECT DIFFERENTIAL LOCK SWITCH

    1. Remove the 4WD/AWD lock switch (differential lock switch).

      Click here

    2. Inspect the 4WD/AWD lock switch (differential lock switch).

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE DIFFERENTIAL LOCK SWITCH

    Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (DIFFERENTIAL LOCK SWITCH - BODY GROUND)

    1. C278711C05

      *a

      Front view of wire harness connector

      (to 4WD/AWD Lock Switch [Differential Lock Switch])

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G191-6 - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (DIFFERENTIAL LOCK SWITCH - 4WD ECU ASSEMBLY)

    1. Reinstall the 4WD/AWD lock switch (differential lock switch).

    2. Disconnect the 4WD ECU assembly connector.

    3. C270074C09

      *a

      Front view of wire harness connector

      (to 4WD ECU Assembly)

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      G86-10 (4WDS) - Body ground

      4WD/AWD lock switch on (Push)

      Below 1 Ω

      4WD/AWD lock switch off (Release)

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE 4WD ECU ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR