LANE-KEEPING ASSIST SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU

    A01H1HWE01

    1. Disconnect the A33 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A33-13 (B) - Body ground Y - Body ground Power supply Always 11 to 14 V
      A33-25 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A33-11 (STP-) - Body ground BE - Body ground Stop light switch signal input Depress brake pedal 7.5 to 14 V
      Release brake pedal Below 1 V
      A33-34 (ST1-) - Body ground G - Body ground Stop light switch signal input Power switch ON (IG), release brake pedal 7.5 to 14 V
      Power switch ON (IG), depress brake pedal Below 1 V

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

  2. CHECK OBJECT RECOGNITION ECU

    A01H20OE09

    1. Disconnect the p1 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      p1-6 (IG) - Body ground V - Body ground IG power supply Power switch ON (IG) 11 to 14 V
      Power switch OFF Below 1 V
      p1-10 (GND) - Body ground W-B - Body ground Body ground Always Below 1 Ω

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