Lexus ES manuals

Lexus ES: Terminals Of Ecu

TERMINALS OF ECU

STEREO COMPONENT EQUALIZER ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G15-1 (CANH)

P

CAN communication signal

-

-

G15-2 (ACK1)

V

Serial communication (UART) signal

-

-

G15-3 (NEI) - G15-28 (GND)

LA-B - LA

Engine pulse signal

Idling with warm engine

Pulse generation

(See waveform 1)

G15-5 (MC3+) - G15-28 (GND)

W - LA

Active noise control microphone input signal

No. 3 active noise control microphone tapped with finger

Pulse generation

G15-6 (MC2+) - G15-28 (GND)

W - LA

Active noise control microphone input signal

No. 2 active noise control microphone tapped with finger

Pulse generation

G15-7 (MC1+) - G15-28 (GND)

V - LA

Active noise control microphone input signal

No. 1 active noise control microphone tapped with finger

Pulse generation

G15-10 (CH3+) - G15-28 (GND)

W- LA

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G15-11 (CH2+) - G15-28 (GND)

L - LA

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G15-12 (CH1+) - G15-28 (GND)

BR - LA

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G15-13 (ACC) - G15-28 (GND)

P - LA

Power source (ACC)

Engine switch on (ACC)

11 to 14 V

G15-14 (+B) - G15-28 (GND)

LA-R - LA

Power source

Always

11 to 14 V

G15-15 (CANL)

W

CAN communication signal

-

-

G15-16 (ACK2)

BE

Serial communication (UART) signal

-

-

G15-17 (ACNT) - G15-28 (GND)

SB - LA

Active noise control system control signal

Engine switch on (IG)

Below 1 V

Engine switch on (ACC)

4.5 V or higher

G15-19 (MC3-) - G15-28 (GND)

SB - LA

Active noise control microphone input signal

Always

Below 1 Ω

G15-20 (MC2-) - G15-28 (GND)

SB - LA

Active noise control microphone input signal

Always

Below 1 Ω

G15-21 (MC1-) - G15-28 (GND)

LG - LA

Active noise control microphone input signal

Always

Below 1 Ω

G15-24 (CH3-) - G15-28 (GND)

Y - LA

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G15-25 (CH2-) - G15-28 (GND)

R - LA

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G15-26 (CH1-) - G15-28 (GND)

G - LA

Active noise control microphone output signal

Active noise control system operating

Pulse generation

G15-27 (IGN) - G15-28 (GND)

LA-SB - LA

Power source (IG)

Engine switch on (IG)

11 to 14 V

G15-28 (GND) - Body ground

LA - 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

G15-3 (NEI) - G15-28 (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

G12-2 (ACK1)

V

Serial communication (UART) signal

-

-

G12-3 (ACNT) - G11-3 (GND)

SB - W-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

G12-6 (AN3+) - G11-3 (GND)

W - W-B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G12-7 (AN2+) - G11-3 (GND)

L - W-B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G12-8 (AN1+) - G11-3 (GND)

BR - W-B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G12-10 (ACK2)

BE

Serial communication (UART) signal

-

-

G12-13 (ASG1) - G11-3 (GND)

Shielded - W-B

Shield ground

Always

Below 1 Ω

G12-14 (AN3-) - G11-3 (GND)

Y - W-B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G12-15 (AN2-) - G11-3 (GND)

R - W-B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

G12-16 (AN1-) - G11-3 (GND)

G - W-B

Active noise control microphone input signal

Active noise control system operating

Pulse generation

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