LANE-KEEPING ASSIST SYSTEM TERMINALS OF ECU


  1. CHECK DRIVING SUPPORT ECU

    A01FDRRE13

    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 Engine 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

      Engine 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

      Engine 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

      Engine 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

      Engine 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

      Engine 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

      Engine 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 Engine switch on (IG)

      Pulse generation

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

      W - BR*1

      W - W-B*2

      		 CAN communication system Engine switch on (IG)

      Pulse generation

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

      SB - BR*1

      SB - W-B*2

      		 CAN communication system Engine 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

      Engine 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

      Engine switch on (IG),

      depress brake pedal

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

      L - BR*1

      L - W-B*2

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

      L - BR*1

      L - W-B*2

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

      L - BR*1

      L - W-B*2

      		 Wiper switch signal

      Engine 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

      Engine 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

      Engine 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

      Engine 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

      Engine 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

      Engine 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 Engine switch on (IG)

      Pulse generation

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

      G - BR*1

      G - W-B*2

      		 CAN communication system Engine 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. A01FIX2E72

      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 Engine switch on (IG)
    4. A01FGD5E63

      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 Engine switch on (IG)

  2. CHECK LANE RECOGNITION CAMERA SENSOR ASSEMBLY

    A01FIN6E01

    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 Engine switch on (IG) 11 to 14 V
      Y7-8 (IGB) - Y7-4 (GND) L - BR Power supply Engine switch off Below 1 V

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