DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM TERMINALS OF ECU


  1. CHECK 4WD ECU ASSEMBLY

    A018H3JE08

    1. Measure the voltage and resistance of the connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F14-10 (4WDL) - F14-4 (GND) BE - BR AWD lock switch signal

      Ignition switch ON

      AWD lock switch OFF → ON

      		 11 to 14 V → Below 1 V
      F14-6 (CANH) - F14-5 (CANL) L - W HIGH-level CAN bus wire - LOW-level CAN bus wire Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      F14-4 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      F14-3 (IG1) - F14-4 (GND) B - BR Power source voltage Ignition switch ON 11 to 14 V
      F14-2 (SLC+) - F14-1 (SLC-) G - R 4WD linear solenoid signal Shift lever in D, idling Pulse generation (See waveform 1)

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

    2. A018HI5E01

      Using an oscilloscope, check the waveform 1.

      Waveform 1 (Reference)
      Item Content
      Terminal No. (Symbol) F14-2 (SLC+) - F14-1 (SLC-)
      Tester Range 2 V/DIV., 1 msec./DIV.
      Condition Shift lever in D, idling