CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK POWER MANAGEMENT CONTROL ECU

    A005CDAE02
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A22-7 (ST1-) - L5-6 (E1) R - W-B Stop light switch signal Power switch on (IG), Brake pedal released 11 to 14 V
    A22-7 (ST1-) - L5-6 (E1) R - W-B Stop light switch signal Power switch on (IG), Brake pedal depressed Below 1 V
    A22-23 (STP) - L5-6 (E1) L - W-B Stop light switch signal Brake pedal released Below 1 V
    A22-23 (STP) - L5-6 (E1) L - W-B Stop light switch signal Brake pedal depressed 11 to 14 V
    L5-6 (E1) - Body ground W-B - Body ground Earth (ground) circuit of power management control ECU Always Below 1 Ω
    L5-11 (TC) - L5-6 (E1) P - W-B Terminal TC of DLC3 Power switch on (IG) 11 to 14 V
    L5-11 (TC) - L5-6 (E1) P - W-B Terminal TC of DLC3 Terminals TC and CG of DLC3 connected Below 1 V
    L5-14 (SPDI) - L5-6 (E1) V - W-B Vehicle speed signal Driving at 20 km/h (12 mph)

    Pulse generation

    (see waveform 1)
    L6-22 (CCS) - L5-6 (E1) BE - W-B Cruise control switch circuit Power switch on (IG) 1 MΩ or higher
    L6-22 (CCS) - L5-6 (E1) BE - W-B Cruise control switch circuit Power switch on (IG), Cruise control switch on Below 2.5 Ω
    L6-22 (CCS) - L5-6 (E1) BE - W-B Cruise control switch circuit Power switch on (IG), +/RES switch on 235 to 245 Ω
    L6-22 (CCS) - L5-6 (E1) BE - W-B Cruise control switch circuit Power switch on (IG), -/SET switch on 617 to 643 Ω
    L6-22 (CCS) - L5-6 (E1) BE - W-B Cruise control switch circuit Power switch on (IG), CANCEL switch on 1509 to 1571 Ω
    L6-24 (CA1L) - L5-6 (E1) P - W-B CAN communication line Power switch on (IG)

    Pulse generation

    (see waveform 2)
    L6-25 (CA1H) - L5-6 (E1) V - W-B CAN communication line Power switch on (IG)

    Pulse generation

    (see waveform 3)

    1. A005AX7E03
      *a 5 V/DIV.
      *b 20 ms./DIV.

      WAVEFORM 1


      1. Vehicle speed signal

        Power Management Control ECU Terminal Name Between L5-14 (SPDI) and L5-6 (E1)
        Tester Range 5 V/DIV., 20 ms./DIV.
        Condition Driving at 20 km/h (12 mph)

        Tech Tips


        • The wavelength becomes shorter as the vehicle speed increases.

        • Depending on the vehicle, the output waveform voltage may rise to 12 V if influenced by optionally installed systems.

    2. A005CUIE22
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 2


      1. CAN communication signal

        Power Management Control ECU Terminal Name Between L6-24 (CA1L) and L5-6 (E1)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Power switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.

    3. A005EA7E02
      *a 1 V/DIV.
      *b 10 μsec./DIV.

      WAVEFORM 3


      1. CAN communication signal

        Power Management Control ECU Terminal Name Between L6-25 (CA1H) and L5-6 (E1)
        Tester Range 1 V/DIV., 10 μsec./DIV.
        Condition Power switch on (IG)

        Tech Tips

        The waveform varies depending on the CAN communication signal.