LANE DEPARTURE ALERT SYSTEM TERMINALS OF ECU


  1. CHECK LANE DEPARTURE WARNING CAMERA

    A002ANGE08

    1. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S4-4 (LKSW) - S4-11 (GND) Y - W-B Lane-keeping assist main switch signal Engine switch on (IG), lane-keeping assist main switch off 4.5 to 5.5 V
      S4-4 (LKSW) - S4-11 (GND) Y - W-B Lane-keeping assist main switch signal Engine switch on (IG), lane-keeping assist main switch on Below 1 V
      S4-6 (CA1P) - S4-11 (GND) R - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (Waveform 1)
      S4-7 (IGB) - S4-11 (GND) V - W-B Power source Engine switch on (IG) 11 to 14 V
      S4-8 (BZ) - S4-9 (GND) L - W-B Skid control buzzer assembly*1 or lane departure warning buzzer*2 output Engine switch on (IG), skid control buzzer assembly*1 or lane departure warning buzzer*2 not sounding 11 to 14 V
      S4-8 (BZ) - S4-9 (GND) L - W-B Skid control buzzer assembly*1 or lane departure warning buzzer*2 output Engine switch on (IG), skid control buzzer assembly*1 or lane departure warning buzzer*2 sounding Below 1.5 V
      S4-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 V
      S4-12 (CA1N) - S4-11 (GND) B - W-B CAN communication signal Engine switch on (IG)

      Pulse generation

      (Waveform 1)

      *1: w/ Dynamic Radar Cruise Control System

      *2: w/o Dynamic Radar Cruise Control System

      If the result is not as specified, the lane departure warning camera may be malfunctioning.

      Tech Tips

      Oscilloscope waveform samples are provided here for reference only. Noise and fluctuating waveforms have been omitted.

    2. A018I0RE09

      Waveform 1 (CAN communication signal)

      Item Content
      Terminal Name

      CH1: S4-6 (CA1P) - S4-11 (GND)

      CH2: S4-12 (CA1N) - S4-11 (GND)
      Tester Range 1 V/DIV., 50 μs./DIV.
      Condition Engine switch on (IG)

      Tech Tips

      The waveform will vary depending on the content of the digital communication (digital signal).