DYNAMIC TORQUE CONTROL AWD SYSTEM TERMINALS OF ECU


  1. CHECK 4WD ECU ASSEMBLY

    A001VL5E14

    1. Measure the voltage and resistance of the connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M77-6 (CANH) - M77-5 (CANL) L - W HIGH-level CAN bus wire - LOW-level CAN bus wire Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      M77-4 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M77-3 (IG1) - M77-4 (GND) V - W-B Power source voltage Ignition switch ON 11 to 14 V
      M77-2 (SLC+) - M77-1 (SLC-) W - B 4WD linear solenoid signal D position, Idling Pulse generation (See waveform 1)

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

    2. A001YG7E01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference)
      Item Content
      Terminal No. (Symbol) M77-2 (SLC+) - M77-1 (SLC-)
      Tester Range 2 V/DIV., 1 msec./DIV.
      Condition D position, Idling