ACTIVE NOISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK STEREO COMPONENT EQUALIZER ASSEMBLY

    B000R5EE02
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    X8-14 (+B) - X8-28 (GND) LG - W-B Power source Power switch off 11 to 14 V
    X8-27 (IGN) - X8-28 (GND) B - W-B Power source (IG) Power switch on (IG) 11 to 14 V
    X8-13 (ACC) - X8-28 (GND) BE - W-B Power source (ACC) Power switch on (ACC) 11 to 14 V
    X8-28 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    X8-7 (MC1+) - X8-28 (GND) W - W-B Active noise control microphone input signal No. 1 active noise control microphone tapped with finger Pulse generation
    X8-21 (MC1-) - X8-28 (GND) R - W-B Active noise control microphone input signal Always Below 1 Ω
    X8-6 (MC2+) - X8-28 (GND) B - W-B Active noise control microphone input signal No. 2 active noise control microphone tapped with finger Pulse generation
    X8-20 (MC2-) - X8-28 (GND) R - W-B Active noise control microphone input signal Always Below 1 Ω
    X8-5 (MC3+) - X8-28 (GND) LG - W-B Active noise control microphone input signal No. 3 active noise control microphone tapped with finger Pulse generation
    X8-19 (MC3-) - X8-28 (GND) R - W-B Active noise control microphone input signal Always Below 1 Ω
    X8-3 (NEI) - X8-28 (GND) L - W-B Engine pulse signal Engine idling after starting HV system

    Pulse generation

    (See waveform 1)
    X8-12 (CH1+) - X8-28 (GND) W - W-B Active noise control microphone output signal Active noise control system operating Pulse generation
    X8-26 (CH1-) - X8-28 (GND) B - W-B Active noise control microphone output signal Active noise control system operating Pulse generation
    X8-11 (CH2+) - X8-28 (GND) R - W-B Active noise control microphone output signal Active noise control system operating Pulse generation
    X8-25 (CH2-) - X8-28 (GND) L - W-B Active noise control microphone output signal Active noise control system operating Pulse generation
    X8-10 (CH3+) - X8-28 (GND) G - W-B Active noise control microphone output signal Active noise control system operating Pulse generation
    X8-24 (CH3-) - X8-28 (GND) GR - W-B Active noise control microphone output signal Active noise control system operating Pulse generation
    X8-23 (ASG1) - X8-28 (GND) Shielded - W-B Shielded ground Always Below 1 Ω
    X8-17 (ACNT) - X8-28 (GND) B - W-B Active noise control system control signal Power switch on (IG) Below 1 V
    Power switch on (ACC) 4.5 V or higher
    X8-2 (ACK1) GR Serial communication (UART) signal - -
    X8-16 (ACK2) V Serial communication (UART) signal - -
    X8-1 (CANH) L CAN communication signal - -
    X8-15 (CANL) LG CAN communication signal - -

    1. Waveform 1

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only. The waveform fluctuates according to engine speed.

      B000Q5WE02
      Item Condition
      Measurement terminal X8-3 (NEI) - X8-28 (GND)
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Engine idling after starting HV system