CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK POWER MANAGEMENT CONTROL ECU

    A003XWGE11
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    A20-7 (ST1-) - H3-6 (E1) R - W-B Stop light switch signal Power switch on (IG), Brake pedal released 11 to 14 V
    A20-7 (ST1-) - H3-6 (E1) R - W-B Stop light switch signal Power switch on (IG), Brake pedal depressed Below 1 V
    A20-23 (STP) - H3-6 (E1) L - W-B Stop light switch signal Brake pedal released Below 1 V
    A20-23 (STP) - H3-6 (E1) L - W-B Stop light switch signal Brake pedal depressed 11 to 14 V
    H3-6 (E1) - Body ground W-B - Body ground Earth (ground) circuit of power management control ECU Always Below 1 Ω
    H3-11 (TC) - H3-6 (E1) L - W-B Terminal TC of DLC3 Power switch on (IG) 11 to 14 V
    H3-11 (TC) - H3-6 (E1) L - W-B Terminal TC of DLC3 Terminals TC and CG of DLC3 connected Below 1 V
    H3-14 (SPDI) - H3-6 (E1) V - W-B Vehicle speed signal Driving at 20 km/h (12 mph)

    Pulse generation

    (see waveform 1)
    H4-22 (CCS) - H3-6 (E1) SB - W-B Cruise control switch circuit Power switch on (IG) 11 to 14 V
    H4-22 (CCS) - H3-6 (E1) SB - W-B Cruise control switch circuit Power switch on (IG), Cruise control switch on Below 1 V
    H4-22 (CCS) - H3-6 (E1) SB - W-B Cruise control switch circuit Power switch on (IG), +/RES switch on 2.3 to 4.0 V
    H4-22 (CCS) - H3-6 (E1) SB - W-B Cruise control switch circuit Power switch on (IG), -/SET switch on 4.5 to 7.1 V
    H4-22 (CCS) - H3-6 (E1) SB - W-B Cruise control switch circuit Power switch on (IG), CANCEL switch on 6.6 to 10.1 V
    H4-24 (CA1L) - H3-6 (E1) V - W-B CAN communication line Power switch on (IG)

    Pulse generation

    (see waveform 2)
    H4-25 (CA1H) - H3-6 (E1) P - W-B CAN communication line Power switch on (IG)

    Pulse generation

    (see waveform 3)

    1. A003VVJE02

      WAVEFORM 1


      1. Vehicle speed signal

        Power Management Control ECU Terminal Name Between H3-14 (SPDI) and H3-6 (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. A003WYSE07

      WAVEFORM 2


      1. CAN communication signal

        Power Management Control ECU Terminal Name Between H4-24 (CA1L) and H3-6 (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. A003WHPE02

      WAVEFORM 3


      1. CAN communication signal

        Power Management Control ECU Terminal Name Between H4-25 (CA1H) and H3-6 (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.