LANE-KEEPING ASSIST SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU

    A004U94E03

    1. Disconnect the D14 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D14-30 (B) - Body ground L - Body ground ECU power supply circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      D14-25 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      D14-8 (LKSW) - Body ground P - Body ground Lane-keeping assist main switch signal Lane-keeping assist main switch on Below 1 Ω
      Lane-keeping assist main switch off 10 kΩ or higher

      If the result is not as specified, there may be a malfunction of the wire harness side.

    3. Reconnect the D14 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D14-32 (WIP2) - Body ground R - Body ground Windshield wiper switch signal Ignition switch ON, windshield wiper switch Hi 11 to 14 V
      Ignition switch ON, windshield wiper switch Lo Approximately 9 V
      Ignition switch ON, windshield wiper switch off Below 1 V
      D14-9 (WASH) - Body ground W - Body ground Windshield wiper switch signal Ignition switch ON, washer switch off 11 to 14 V
      Ignition switch ON, washer switch on Below 1 V
      D14-34 (WNKR) - Body ground LG - Body ground Turn signal light switch signal Turn signal light switch right 11 to 14 V
      Turn signal light switch off Below 1 V
      D14-35 (WNKL) - Body ground G - Body ground Turn signal light switch signal Turn signal light switch left 11 to 14 V
      Turn signal light switch off Below 1 V

      If the result is not as specified, the ECU may be malfunctioning.

  2. CHECK LANE RECOGNITION CAMERA SENSOR ASSEMBLY

    A004SB4E02

    1. Disconnect the K10 sensor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      K10-8 (IGB) - Body ground L - Body ground Power source circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      K10-4 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

      If the result is not as specified, there may be a malfunction of the wire harness side.