Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Terminals Of Ecu

TERMINALS OF ECU

STEREO COMPONENT EQUALIZER ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G68-1 (CANH)

P

CAN communication signal

-

-

G68-2 (ACK1)

V

Serial communication (UART) signal

-

-

G68-3 (NEI) - G68-28 (GND)

LA-B - W-B

Engine pulse signal

Idling with warm engine

Pulse generation

(See waveform 1)

G68-5 (MC3+) - G68-28 (GND)

R - W-B

Active noise control microphone input signal

No. 3 active noise control microphone tapped with finger

Pulse generation

G68-6 (MC2+) - G68-28 (GND)

B - W-B

Active noise control microphone input signal

No. 2 active noise control microphone tapped with finger

Pulse generation

G68-7 (MC1+) - G68-28 (GND)

V - W-B

Active noise control microphone input signal

No. 1 active noise control microphone tapped with finger

Pulse generation

G68-10 (CH3+) - G68-28 (GND)

SB - W-B

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G68-11 (CH2+) - G68-28 (GND)

L - W-B

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G68-12 (CH1+) - G68-28 (GND)

Y - W-B

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G68-13 (ACC) - G68-28 (GND)

P - W-B

Power source (ACC)

Engine switch on (ACC)

11 to 14 V

G68-14 (+B) - G68-28 (GND)

LA-G - W-B

Power source

Always

11 to 14 V

G68-15 (CANL)

W

CAN communication signal

-

-

G68-16 (ACK2)

BE

Serial communication (UART) signal

-

-

G68-17 (ACNT) - G68-28 (GND)

SB - W-B

Active noise control system control signal

Engine switch on (IG)

Below 1 V

Engine switch on (ACC)

4.5 V or higher

G68-19 (MC3-) - G68-28 (GND)

G - W-B

Active noise control microphone input signal

Always

Below 1 Ω

G68-20 (MC2-) - G68-28 (GND)

P - W-B

Active noise control microphone input signal

Always

Below 1 Ω

G68-21 (MC1-) - G68-28 (GND)

LG - W-B

Active noise control microphone input signal

Always

Below 1 Ω

G68-24 (CH3-) - G68-28 (GND)

P - W-B

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G68-25 (CH2-) - G68-28 (GND)

V - W-B

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G68-26 (CH1-) - G68-28 (GND)

LG - W-B

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G68-27 (IGN) - G68-28 (GND)

LA-SB - W-B

Power source (IG)

Engine switch on (IG)

11 to 14 V

G68-28 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(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

G68-3 (NEI) - G68-28 (GND)

Tool setting

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

Vehicle condition

Idling after warming up

STEREO COMPONENT AMPLIFIER ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G69-2 (ACK1)

GR

Serial communication (UART) signal

-

-

G69-3 (ACNT)

B

Active noise control system control signal

Active noise control system operating

Below 1 V

Active noise control system not operating

4.5 V or higher

G69-6 (AN3+)

G

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G69-7 (AN2+)

R

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G69-8 (AN1+)

W

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G69-10 (ACK2)

V

Serial communication (UART) signal

-

-

G69-13 (ASG1)

Shielded - W-B

Shield ground

Always

Below 1 Ω

G69-14 (AN3-)

GR

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G69-15 (AN2-)

L

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G69-16 (AN1-)

B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

    System Diagram

    Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087)

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Audio And Visual System(for Hv Model): Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198,U0265,U0293)
    DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. Detection Item DTC Detection Condition Trouble Area U0073 Sending Malfunction (Navigation to APGS) CAN bus connection error CAN communication system U0100 Engine ECU Communication CAN reception erro ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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