Toyota Yaris: Active Noise Control System / Terminals Of Ecu

Toyota Yaris XP210 (2020-2024) 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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