LANE-KEEPING ASSIST SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU

    A01FROYE13

    1. Disconnect the N5 driving support ECU connector.

      Note

      If a load of more than 10 kg (22 lb.) is placed on the connector, it may break. Do not place more load than is necessary on the 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
      N5-2 (CA3H) - N5-25 (GND)

      G - BR*1

      G - W-B*2

      		 CAN communication system Power switch on (IG)

      Pulse generation

      (See waveform 1)
      N5-6 (SPSW) - N5-25 (GND)

      Y - BR*1

      Y - W-B*2

      		 Lane-keeping assist main switch signal

      Power switch on (IG),

      steering pad switch off

      		 1 MΩ or higher
      N5-6 (SPSW) - N5-25 (GND)

      Y - BR*1

      Y - W-B*2

      		 Lane-keeping assist main switch signal

      Power switch on (IG),

      steering pad switch on (Lane-keeping assist main switch on and distance control switch off)

      		 235 to 245 Ω
      N5-6 (SPSW) - N5-25 (GND)

      Y - BR*1

      Y - W-B*2

      		 Distance control switch signal

      Power switch on (IG),

      steering pad switch off

      		 1 MΩ or higher
      N5-6 (SPSW) - N5-25 (GND)

      Y - BR*1

      Y - W-B*2

      		 Distance control switch signal

      Power switch on (IG),

      steering pad switch on (Lane-keeping assist main switch off and distance control switch on)

      		 Below 2.5 Ω
      N5-9 (WASH) - N5-25 (GND)

      B - BR*1

      B - W-B*2

      		 Wiper switch signal

      Power switch on (IG),

      Windshield washer switch off

      		 9 to 14 V
      N5-9 (WASH) - N5-25 (GND)

      B - BR*1

      B - W-B*2

      		 Wiper switch signal

      Power switch on (IG),

      Windshield washer switch on

      		 Below 1 V
      N5-17 (CA2L) - N5-25 (GND)

      LG - BR*1

      LG - W-B*2

      		 CAN communication system Power switch on (IG)

      Pulse generation

      (See waveform 2)
      N5-18 (CA1N) - N5-25 (GND)

      W - BR*1

      W - W-B*2

      		 CAN communication system Power switch on (IG)

      Pulse generation

      (See waveform 2)
      N5-20 (CA3L) - N5-25 (GND)

      SB - BR*1

      SB - W-B*2

      		 CAN communication system Power switch on (IG)

      Pulse generation

      (See waveform 2)
      N5-27 (STP-) - N5-25 (GND)

      R - BR*1

      R - W-B*2

      		 Stop light switch signal input Depress brake pedal 9 to 14 V
      N5-27 (STP-) - N5-25 (GND)

      R - BR*1

      R - W-B*2

      		 Stop light switch signal input Release brake pedal Below 1 V
      N5-28 (ST1-) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Stop light switch signal input

      Power switch on (IG),

      release brake pedal

      		 9 to 14 V
      N5-28 (ST1-) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Stop light switch signal input

      Power switch on (IG),

      depress brake pedal

      		 Below 1 V
      N5-30 (B) - N5-25 (GND)

      L - BR*1

      L - W-B*2

      		 Power supply Power switch on (IG) 11 to 14 V
      N5-30 (B) - N5-25 (GND)

      L - BR*1

      L - W-B*2

      		 Power supply Power switch off Below 1 V
      N5-32 (WIP2) - N5-25 (GND)

      L - BR*1

      L - W-B*2

      		 Wiper switch signal

      Power switch on (IG),

      Windshield wiper switch off

      		 9 to 14 V
      N5-32 (WIP2) - N5-25 (GND)

      L - BR*1

      L - W-B*2

      		 Wiper switch signal

      Power switch on (IG),

      Windshield wiper switch Hi

      		 Below 1 V
      N5-34 (WNKR) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Turn switch signal

      Power switch on (IG),

      Turn signal switch off

      		 9 to 14 V
      N5-34 (WNKR) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Turn switch signal

      Power switch on (IG),

      Turn signal switch right

      		 Below 1 V
      N5-35 (WNKL) - N5-25 (GND)

      G - BR*1

      G - W-B*2

      		 Turn switch signal

      Power switch on (IG),

      Turn signal switch off

      		 9 to 14 V
      N5-35 (WNKL) - N5-25 (GND)

      G - BR*1

      G - W-B*2

      		 Turn switch signal

      Power switch on (IG),

      Turn signal switch left

      		 Below 1 V
      N5-39 (CA2H) - N5-25 (GND)

      V - BR*1

      V - W-B*2

      		 CAN communication system Power switch on (IG)

      Pulse generation

      (See waveform 1)
      N5-40 (CA1P) - N5-25 (GND)

      G - BR*1

      G - W-B*2

      		 CAN communication system Power switch on (IG)

      Pulse generation

      (See waveform 1)

      • *1: for LHD

      • *2: for RHD

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

    3. A01FQL6E76

      Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item Content
      Tester Connection

      • N5-2 (CA3H) - N5-25 (GND)

      • N5-39 (CA2H) - N5-25 (GND)

      • N5-40 (CA1P) - N5-25 (GND)
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Vehicle Condition Power switch on (IG)
    4. A01FVSXE67

      Using an oscilloscope, check waveform 2.

      Measurement Condition
      Item Content
      Tester Connection

      • N5-17 (CA2L) - N5-25 (GND)

      • N5-18 (CA1N) - N5-25 (GND)

      • N5-20 (CA3L) - N5-25 (GND)
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Vehicle Condition Power switch on (IG)

  2. CHECK LANE RECOGNITION CAMERA SENSOR ASSEMBLY

    A01FU5JE01

    1. Disconnect the Y7 lane recognition camera sensor assembly 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
      Y7-4 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
      Y7-8 (IGB) - Y7-4 (GND) L - BR Power supply Power switch on (IG) 11 to 14 V
      Y7-8 (IGB) - Y7-4 (GND) L - BR Power supply Power switch off Below 1 V

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