Toyota Yaris: Active Noise Control System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Audio & Visual & Telematics / Audio / Video / Active Noise Control System / Terminals Of Ecu

TERMINALS OF ECU

CHECK STEREO COMPONENT EQUALIZER ASSEMBLY

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

O131-15(+B) - O131-30(GND)

Power source

Always

11 to 14 V

O131-29(IGP) - O131-30(GND)

Power source (IG)

Ignition switch ON

11 to 14 V

O131-14(ACC) - O131-30(GND)

Power source (ACC)

Ignition switch ACC

11 to 14 V

O131-30(GND) - Body ground

Ground

Always

Below 1 Ω

O132-1(MC1+) - O131-30(GND)

Active noise control microphone input signal

Active noise control microphone LH tapped with finger

Pulse generation

O132-5(MC1-) - O131-30(GND)

Active noise control microphone input signal

Always

Below 1 Ω

O132-2(MC2+) - O131-30(GND)

Active noise control microphone input signal

Active noise control microphone RH tapped with finger

Pulse generation

O132-6(MC2-) - O131-30(GND)

Active noise control microphone input signal

Always

Below 1 Ω

O131-3(NEI) - O131-30(GND)

Engine pulse signal

Idling with warm engine

Pulse generation

(See waveform 1)

O131-24(FLI-)

Active noise control microphone output signal

-

-

O131-9(FLI+)

Active noise control microphone output signal

-

-

O131-23(FRI-)

Active noise control microphone output signal

-

-

O131-8(FRI+)

Active noise control microphone output signal

-

-

O131-5(RRI+)

Active noise control microphone output signal

-

-

O131-20(RRI-)

Active noise control microphone output signal

-

-

O131-6(RLI+)

Active noise control microphone output signal

-

-

O131-21(RLI-)

Active noise control microphone output signal

-

-

O131-7(ASG1)

Shield ground

-

-

O131-22(ASG2)

Shield ground

-

-

O131-12(FR+) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-27(FR-) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-13(FL+) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-28(FL-) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-10(RR+) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131+25(RR-) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-11(RL+) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-28(RL-) - O131-30(GND)

Sound signal

Active noise control system operating

Pulse generation

O131-1(CANH)

CAN communication signal

-

-

O131-16(CANL)

CAN communication signal

-

-

(a) Waveform 1

HINT:

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

Item

Condition

Measurement terminal

O131-3 (NEI) - O131-28 (GND)

Tool setting

5 V/DIV., 20 ms./DIV.

Vehicle condition

Idling with warm engine

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