DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK ECM

    A01FIB7E01

    1. Disconnect the F1, F4, A19 and A21 ECM connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A19-7 (BATT) - F4-1 (E1) L - BR Battery (for measuring battery voltage and for ECM memory) Always 11 to 14 V
      F1-1 (+BM) - F4-1 (E1) P - BR Power source of throttle motor Always Below 1 V
      A19-12 (ST1-) - F4-1 (E1) GR - BR Normally closed switch

      Engine switch on (IG),

      brake pedal depressed

      		 Below 1.5 V
      A19-12 (ST1-) - F4-1 (E1) GR - BR Normally closed switch

      Engine switch on (IG),

      brake pedal released

      		 7.5 to 14 V
      A19-13 (STP) - F4-1 (E1) R - BR Normally open switch Brake pedal depressed 7.5 to 14 V
      A19-13 (STP) - F4-1 (E1) R - BR Normally open switch Brake pedal released Below 1.5 V
      A21-7 (SFTD) - F4-1 (E1) W - BR Down shift switch signal Engine switch on (IG) and shift lever M position 11 to 14 V
      A21-7 (SFTD) - F4-1 (E1) W - BR Down shift switch signal Engine switch on (IG) and shift lever "-" position (Down shift) Below 1 V
      A21-7 (SFTD) - F4-1 (E1) W - BR Down shift switch signal Engine switch on (IG) and "-" shift paddle operated and held (down-shift) Below 1 V
      A21-8 (SFTU) - F4-1 (E1) Y - BR Up shift switch signal Engine switch on (IG) and shift lever M position 11 to 14 V
      A21-8 (SFTU) - F4-1 (E1) Y - BR Up shift switch signal Engine switch on (IG) and shift lever "+" position (Up shift) Below 1 V
      A21-8 (SFTU) - F4-1 (E1) Y - BR Up shift switch signal Engine switch on (IG) and "+" shift paddle operated and held (up-shift) Below 1 V
      A21-16 (S) - F4-1 (E1) R - BR M shift position switch signal Engine switch on (IG) and shift lever M position 11 to 14 V
      A21-16 (S) - F4-1 (E1) R - BR M shift position switch signal Engine switch on (IG) and shift lever except M position Below 1 V

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

  2. 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

      		 Distance control switch signal

      Engine switch on (IG),

      distance control 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),

      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
      N5-10 (CCHG) - N5-25 (GND)

      LG - BR*1

      LG - W-B*2

      		 Cruise control switch signal

      Cruise control main switch on,

      MODE switch off

      		 9 to 14 V
      N5-10 (CCHG) - N5-25 (GND)

      LG - BR*1

      LG - W-B*2

      		 Cruise control switch signal

      Cruise control main switch on,

      MODE 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)
      N5-23 (CCS) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Cruise control switch signal Cruise control main switch on Below 2.5 Ω
      N5-23 (CCS) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Cruise control switch signal Cruise control main switch off 1 MΩ or higher
      N5-23 (CCS) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Cruise control switch signal +RES switch is held on 235 to 245 Ω
      N5-23 (CCS) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Cruise control switch signal -SET switch is held on 617 to 643 Ω
      N5-23 (CCS) - N5-25 (GND)

      GR - BR*1

      GR - W-B*2

      		 Cruise control switch signal CANCEL switch is held on 1509 to 1571 Ω
      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
      N5-32 (WIP2) - N5-25 (GND)

      L - BR*1

      L - W-B*2

      		 Wiper switch signal

      Engine switch on (IG),

      windshield wiper 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 Hi

      		 9 to 14 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
      N5-39 (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. A01FIX2E17

      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)