CHARGING SYSTEM TERMINALS OF ECU


  1. CHARGING SYSTEM

    A0117SIE01

    Tech Tips

    The standard voltage between each pair of the power management control ECU terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated.

    The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the Specified Condition column.

    The illustration above can be used as a reference to identify the power management control ECU terminal locations.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    D37-14 (RLO) - D39-12 (GND) G - W-B Generator After engine warmed up, during charging control, vehicle driven at constant speed Pulse generation (see waveform 1)
    After engine warmed up, during charging control, vehicle accelerated Pulse generation (see waveform 2)
    After engine warmed up, during charging control, vehicle decelerated Pulse generation (see waveform 3)
    D37-12 (VC) - D37-18 (E2) W - LG Power source of battery current sensor assembly Ignition switch ON 4.5 to 5.5 V
    D37-15 (THB) - D37-18 (E2) SB - LG Battery temperature sensor Ignition switch ON 0.2 to 4.8 V
    D37-13 (IB) - D37-18 (E2) Y - LG Battery current sensor Ignition switch ON 0.2 to 4.8 V
    D37-18 (E2) - Body ground LG - Body ground Sensor ground Always Below 1 Ω
    D39-8 (AM21) - D39-12 (GND) P - W-B Battery power Always 11 to 14 V
    D39-1 (INH) - D39-12 (GND) V - W-B Windshield wiper switch assembly

    Ignition switch ON

    Windshield wiper switch "HI" position

    		 11 to 14 V
    D37-5 (STA) - D39-12 (GND) L - W-B Starter assembly Cranking 5.5 V or more
    D39-2 (IG2) - D39-12 (GND) L - W-B IG2 relay Ignition switch ON 11 to 14 V
    D39-9 (PNL) - D39-12 (GND) G - W-B PANEL fuse Light control switch OFF → TAIL Below 1 V → 11 to 14 V
    A0119CJE05
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    D36-10 (RLO) - D38-6 (GND) G - W-B Generator After engine warmed up, during charging control, vehicle driven at constant speed Pulse generation (see waveform 1)
    After engine warmed up, during charging control, vehicle accelerated Pulse generation (see waveform 2)
    After engine warmed up, during charging control, vehicle decelerated Pulse generation (see waveform 3)
    D36-23 (VC) - D36-25 (E2) W - LG Power source of battery current sensor assembly Ignition switch ON 4.5 to 5.5 V
    D36-28 (THB) - D36-25 (E2) SB - LG Battery temperature sensor Ignition switch ON 0.2 to 4.8 V
    D36-30 (IB) - D36-25 (E2) Y - LG Battery current sensor Ignition switch ON 0.2 to 4.8 V
    D36-25 (E2) - Body ground LG - Body ground Sensor ground Always Below 1 Ω
    D38-2 (AM21) - D38-6 (GND) R - W-B Battery power Always 11 to 14 V
    D38-1 (AM22) - D38-6 (GND) L - W-B Battery power Always 11 to 14 V
    D38-9 (INH) - D38-6 (GND) V - W-B Windshield wiper switch assembly

    Ignition switch ON

    Windshield wiper switch "HI" position

    		 11 to 14 V
    D36-2 (STA) - D38-6 (GND) L - W-B Starter assembly Cranking 5.5 V or more
    D38-27 (PNL) - D38-6 (GND) G - W-B PANEL fuse Light control switch OFF → TAIL Below 1 V → 11 to 14 V

    1. A011A0XE02

      WAVEFORM 1


      1. w/o Entry and Start System

        Generator
        Tester Connection Tool Setting Vehicle Condition Specified Condition
        D37-14 (RLO) - D39-12 (GND) 2 V/DIV., 50 msec./DIV. After engine warmed up, during charging control, vehicle driven at constant speed Correct waveform as shown in illustration

      2. w/ Entry and Start System

        Generator
        Tester Connection Tool Setting Vehicle Condition Specified Condition
        D36-10 (RLO) - D38-6 (GND) 2 V/DIV., 50 msec./DIV. After engine warmed up, during charging control, vehicle driven at constant speed Correct waveform as shown in illustration

        Tech Tips

        A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.

    2. A0117JUE02

      WAVEFORM 2


      1. w/o Entry and Start System

        Generator
        Tester Connection Tool Setting Vehicle Condition Specified Condition
        D37-14 (RLO) - D39-12 (GND) 2 V/DIV., 50 msec./DIV. After engine warmed up, during charging control, vehicle accelerated Correct waveform as shown in illustration

      2. w/ Entry and Start System

        Generator
        Tester Connection Tool Setting Vehicle Condition Specified Condition
        D36-10 (RLO) - D38-6 (GND) 2 V/DIV., 50 msec./DIV. After engine warmed up, during charging control, vehicle accelerated Correct waveform as shown in illustration

        Tech Tips

        A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.

    3. A011BJIE02

      WAVEFORM 3


      1. w/o Entry and Start System

        Generator
        Tester Connection Tool Setting Vehicle Condition Specified Condition
        D37-14 (RLO) - D39-12 (GND) 2 V/DIV., 50 msec./DIV. After engine warmed up, during charging control, vehicle decelerated Correct waveform as shown in illustration

      2. w/ Entry and Start System

        Generator
        Tester Connection Tool Setting Vehicle Condition Specified Condition
        D36-10 (RLO) - D38-6 (GND) 2 V/DIV., 50 msec./DIV. After engine warmed up, during charging control, vehicle decelerated Correct waveform as shown in illustration

        Tech Tips

        A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.