Toyota Avalon Service & Repair Manual: Terminals Of Ecu

TERMINALS OF ECU

CHECK DCM (TELEMATICS TRANSCEIVER)

*a

Connector Color: Natural (to Telephone Sub Antenna)

*b

Connector Color: Blue (to Telephone Main Antenna)

*c

Connector Color: Gray (to GPS Antenna)

-

-

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G9-1 (+B) - G9-4 (E)

B - W-B

Auxiliary battery power supply

Power switch off

11 to 14 V

G9-2 (SPI+) - G9-4 (E)

W*3, LA-LG*4 - W-B

Sound signal

Audio system playing

A waveform synchronized with sound is output

G9-3 (SPI-) - G9-4 (E)

B*3, LA-L*4 - W-B

Sound signal

Audio system playing

A waveform synchronized with sound is output

G9-4 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

G9-5 (SPO+) - G9-4 (E)

L*3, LA-BE*4 - W-B

Sound signal

Audio system playing, or Emergency call mode

A waveform synchronized with sound is output

G9-6 (SPO-) - G9-4 (E)

Y*3, LA-R*4 - W-B

Sound signal

Audio system playing, or Emergency call mode

A waveform synchronized with sound is output

G9-7 (IG2) - G9-4 (E)

LG - W-B

IG power supply

Power switch on (IG)

11 to 14 V

Power switch off

Below 1 V

G9-8 (ACC) - G9-4 (E)

B - W-B

ACC power supply

Power switch on (ACC)

11 to 14 V

Power switch off

Below 1 V

G9-9 (SLED) - G9-4 (E)

SB - W-B

Manual (SOS) switch illumination power supply

Power switch on (ACC)

11 to 14 V

Power switch off

Below 1 V

G9-11 (IND1) - G9-4 (E)

P - W-B

Manual (SOS) switch red indicator illumination signal

For 2 seconds after turning the power switch on (IG)

1 to 8.5 V

Power switch off

Below 1 V

G9-12 (IND2) - G9-4 (E)

LG - W-B

Manual (SOS) switch green indicator illumination signal

For 2 seconds after turning the power switch on (IG)

1 to 8.5 V

Power switch off

Below 1 V

G9-15 (CANP)

R

CAN communication signal

-

-

G9-16 (CANN)

B

CAN communication signal

-

-

G9-17 (MUTE) - G9-4 (E)

BE - W-B

Mute signal

Audio system playing

3.5 V or higher

Emergency call mode

Below 1 V

G9-18 (MCO+) - G9-4 (E)*1

SB - W-B

Sent microphone voice signal

See "Check Microphone"

-

G9-18 (MCO+) - G9-4 (E)*2

SB - W-B

Sent microphone voice signal

See "Check Microphone"

-

G9-19 (MCO-) - G9-4 (E)*1

V - W-B

Sent microphone voice signal

See "Check Microphone"

-

G9-19 (MCO-) - G9-4 (E)*2

V - W-B

Sent microphone voice signal

See "Check Microphone"

-

G9-24 (GSW) - G9-4 (E)

W - W-B

Collision detection signal

Power switch on (IG)

Pulse generation

(Refer to waveform 1)

G9-26 (SIG-) - G9-4 (E)

GR - W-B

Ground

Always

Below 1 V

G9-27 (SIG1) - G9-4 (E)

B - W-B

Manual (SOS) switch condition signal

Manual (SOS) switch not pressed

1.5 to 2.0 V

Manual (SOS) switch pressed

0.5 to 0.8 V

G9-32 (SGND) - G9-4 (E)

Shield - W-B

Shield ground

Always

Below 1 V

G9-33 (MCVD) - G9-4 (E)

B - W-B

Telephone microphone assembly power supply

Power switch off

Below 1 V

Power switch on (ACC)

4 to 6 V

G9-34 (MCI+) - G9-4 (E)*1

W - W-B

Receive microphone voice signal

See "Check Microphone"

-

G9-34 (MCI+) - G9-4 (E)*2

W - W-B

Receive microphone voice signal

See "Check Microphone"

-

G9-35 (MCI-) - G9-4 (E)*1

R - W-B

Receive microphone voice signal

See "Check Microphone"

-

G9-35 (MCI-) - G9-4 (E)*2

R - W-B

Receive microphone voice signal

See "Check Microphone"

-

  • *1: w/o Navigation System
  • *2: w/ Navigation System
  • *3: for 14 Speakers
  • *4: for 8 Speakers

(a) Oscilloscope waveform:

(1) Waveform 1

Item

Condition

Tester connection

G9-24 (GSW) - G9-4 (E)

Tool setting

5.0 V/DIV., 20 ms/DIV.

Vehicle condition

Power switch on (IG)

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

w/o Navigation System: Click here

w/ Navigation System: Click here

    System Diagram

    Unable To Connect To Call Center

    See More:

    Toyota Avalon Service & Repair Manual > Electronically Controlled Brake System(for Gasoline Model): Check For Intermittent Problems
    CHECK FOR INTERMITTENT PROBLEMS CHECK FOR INTERMITTENT PROBLEMS HINT: A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the Data List function of the Techstream. (a) Turn the engine switch off. (b) Connect the Techstream ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2021 Copyright www.tavalon.net
    0.0348