СИСТЕМА КРУИЗ-КОНТРОЛЯ (для моделей с 1WW) КОНТАКТЫ ЭБУ


  1. CHECK ECM

    A01IQE4E01

    1. Disconnect the A76 ECM connector.

      Note

      After turning the ignition switch off, make sure to wait at least 6 minutes before disconnecting the ECM connector or replacing the ECM.

    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
      A76-15 (BATT) - Body ground B - Body ground Power source circuit Always 11 to 14 V
      A76-37 (IGSW) - Body ground B - Body ground IG power source circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      A76-10 (ST1-) - Body ground R-W - Body ground Stop light switch signal circuit Ignition switch ON, brake pedal released 11 to 14 V
      Ignition switch ON, brake pedal depressed Below 1 V
      A76-48 (STP) - Body ground V - Body ground Stop light switch signal circuit Brake pedal depressed 11 to 14 V
      Brake pedal released Below 1 V
      A76-7 (D) - Body ground W - Body ground Clutch switch signal circuit Ignition switch ON, clutch pedal depressed 11 to 14 V
      Ignition switch ON, clutch pedal released Below 1 V
      A76-4 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

  2. CHECK DRIVING SUPPORT ECU

    A01IRLEE21

    1. Disconnect the H124 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
      H124-30 (B) - H124-25 (GND) L - R IG power source circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      H124-17 (CA2L) - H124-25 (GND) W - R CAN communication system Ignition switch ON Pulse generation (See waveform 1)
      H124-27 (STP-) - H124-25 (GND) V - R Stop light switch signal circuit Brake pedal depressed 9 to 14 V
      Brake pedal released Below 1 V
      H124-28 (ST1-) - H124-25 (GND) R - R Stop light switch signal input Ignition switch ON, release brake pedal 9 to 14 V
      Ignition switch ON, depress brake pedal Below 1 V
      H124-23 (CCS) - H124-25 (GND) SB - R Cruise control switch signal Cruise control main switch on Below 2.5 Ω
      Cruise control main switch off 1 MΩ or higher
      +RES switch held on 235 to 245 Ω
      -SET switch held on 617 to 643 Ω
      CANCEL switch held on 1509 to 1571 Ω
      H124-39 (CA2H) - H124-25 (GND) SB - R CAN communication system Ignition switch ON Pulse generation (See waveform 2)
      H124-25 (GND) - Body ground R - Body ground Ground Always Below 1 Ω

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

    3. A01IQRSE82

      Waveform 1 (CAN communication signal)

      Measurement Condition
      Item Content
      Tester Connection H124-17 (CA2L) - H124-25 (GND)
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Condition Ignition switch ON
    4. A01IUHOE90

      Waveform 2 (CAN communication signal)

      Measurement Condition
      Item Content
      Tester Connection H124-39 (CA2H) - H124-25 (GND)
      Tool Setting 1 V/DIV., 10 μsec/DIV.
      Condition Ignition switch ON