CHARGING SYSTEM TERMINALS OF ECU


  1. CHARGING SYSTEM (POWER MANAGEMENT CONTROL ECU)

    A019L50E10
    Text in Illustration
    *1

    Component with harness connected

    (Power Management Control ECU)

    		 - -

    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.

    Charging System
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    F7-23 (VC) - F7-25 (E2) V - GR Battery current sensor assembly Engine switch on (IG) 4.5 to 5.5 V
    F7-30 (IB) - F7-25 (E2) V - GR Battery current sensor assembly Engine switch on (IG) 0.2 to 4.8 V
    F7-28 (THB) - F7-25 (E2) R - GR Battery temperature sensor (built into battery current sensor assembly) Engine switch on (IG) 0.2 to 4.8 V
    F7-10 (RLO) - F7-25 (E2) W - GR Generator After engine warmed up, during charging control, vehicle driven at constant speed Pulse generation (see waveform 1)
    F7-10 (RLO) - F7-25 (E2) W - GR Generator After engine warmed up, during charging control, vehicle accelerated Pulse generation (see waveform 2)
    F7-10 (RLO) - F7-25 (E2) W - GR Generator After engine warmed up, during charging control, vehicle decelerated Pulse generation (see waveform 3)
    F8-2 (AM21) - F8-6 (GND) R - BR Power source Always 11 to 14 V
    F8-1 (AM22) - F8-6 (GND) SB - BR Power source Always 11 to 14 V
    F7-25 (E2) - Body ground GR - Body ground Sensor ground Always Below 1 Ω

    1. A019KNFE06

      WAVEFORM 1

      Generator
      Symbol Between RLO and E2
      Tester Range 2 V/DIV., 50 ms./DIV.
      Condition After engine warmed up, during charging control, vehicle driven at constant speed

      Tech Tips

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

    2. A019N1BE05

      WAVEFORM 2

      Generator
      Symbol Between RLO and E2
      Tester Range 2 V/DIV., 50 ms./DIV.
      Condition After engine warmed up, during charging control, vehicle accelerated

      Tech Tips

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

    3. A019K8VE05

      WAVEFORM 3

      Generator
      Symbol Between RLO and E2
      Tester Range 2 V/DIV., 50 ms./DIV.
      Condition After engine warmed up, during charging control, vehicle decelerated

      Tech Tips

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

  2. CHARGING SYSTEM (ECM)

    A019N62E06
    Text in Illustration
    *1

    Component with harness connected

    (ECM)

    		 - -

    Tech Tips

    The standard voltage between each pair of the ECM 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 ECM terminal locations.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    D1-32 (ALT) - D1-81 (E1) L - BR Generator assembly Engine switch on (IG) 11 to 14 V