DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM TERMINALS OF ECU

  1. CHECK 4WD ECU ASSEMBLY

    C270073E02

    1. Measure the voltage and resistance of the connector.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G86-10 (4WDS) - G86-4 (GND)

      R - W-B

      4WD/AWD lock switch signal

      Ignition switch ON

      4WD/AWD lock switch OFF → ON

      11 to 14 V → Below 1 V

      G86-11 (EXI)* - G86-4 (GND)

      GR - W-B

      Sport mode switch signal

      Ignition switch ON

      Sport mode switch OFF → ON

      11 to 14 V → Below 1 V

      G86-6 (CANH) - G86-5 (CANL)

      L - W

      HIGH-level CAN bus wire - LOW-level CAN bus wire

      Cable disconnected from negative (-) battery terminal

      54 to 69 Ω

      G86-4 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      G86-3 (IG1) - G86-4 (GND)

      V - W-B

      Power source voltage

      Ignition switch ON

      11 to 14 V

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

      W - B

      4WD linear solenoid signal

      D position, Idling

      Pulse generation (See waveform 1)

      • *: for Manual Transaxle w/ Sport Mode

      If the result is not as specified, the 4WD ECU assembly may have a malfunction.

    2. C170221E01

      Using an oscilloscope, check the waveform 1.

      Table 1. Waveform 1 (Reference)

      Item

      Content

      Terminal No. (Symbol)

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

      Tester Range

      2 V/DIV., 1 msec./DIV.

      Condition

      D position, Idling