Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001PY4O
Model Year Start: 2021 Model: Avalon HV Prod Date Range: [08/2020 -           ]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: TERMINALS OF ECU; 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]

TERMINALS OF ECU

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: for HV Model

*2: for Gasoline Model

G124-1 (+B) - G124-20 (E)

Power source (+B)

Ignition switch off*1

Always*2

11 to 14 V

G124-3 (SIG-) - G124-20 (E)

Ground

Always

Below 1 V

G124-4 (IND1) - G124-20 (E)

Manual (SOS) switch red indicator illumination signal

For 2 seconds after ignition switch turned to ON

1 to 8.5 V

Ignition switch off

Below 1 V

G124-5 (MCVD) - G124-20 (E)

Telephone microphone assembly power supply

Ignition switch ON

4 to 6 V

Ignition switch off

Below 1 V

G124-6 (MCI+) - G124-20 (E)

Receive microphone voice signal

Voice being input to telephone microphone assembly

A waveform synchronized with microphone voice signal is input

G124-7 (MCI-) - G124-20 (E)

Receive microphone voice signal

Always

Below 1 V

G124-13 (GSW) - G124-20 (E)

Collision detection signal

Ignition switch ON

Pulse generation (Refer to waveform 1)

G124-19 (IG2) - G124-20 (E)

Power source (IG)

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

G124-20 (E) - Body ground

Ground

Always

Below 1 Ω

G124-21 (SIG1) - G124-3 (SIG-)

Manual (SOS) switch button condition signal

Manual (SOS) switch not pressed

1.3 to 1.9 V

Manual (SOS) switch pressed

0.5 to 0.8 V

G124-22 (IND2) - G124-20 (E)

Manual (SOS) switch green indicator illumination signal

For 2 seconds after ignition switch turned to ON

1 to 8.5 V

Ignition switch off

Below 1 V

G124-23 (SGND) - G124-20 (E)

Shield ground

Always

Below 1 Ω

G124-25 (CANP)

CAN communication signal

-

-

G124-26 (CANN)

CAN communication signal

-

-

CHECK DCM (TELEMATICS TRANSCEIVER)

(a) Oscilloscope waveform:

(1) Waveform 1

Item

Condition

Tester connection

G124-13 (GSW) - G124-20 (E)

Tool setting

5.0 V/DIV., 20 ms/DIV.

Vehicle condition

Ignition switch ON

CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

w/o Navigation System (for HV Model): Click here 2021 - 2022 MY Avalon HV [08/2020 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model): TERMINALS OF ECU

w/o Navigation System (for Gasoline Model): Click here 2021 - 2022 MY Avalon [08/2020 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Gasoline Model): TERMINALS OF ECU

w/ Navigation System (for HV Model): Click here 2021 - 2022 MY Avalon HV [08/2020 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for HV Model): TERMINALS OF ECU

w/ Navigation System (for Gasoline Model): Click here 2021 - 2022 MY Avalon [08/2020 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for Gasoline Model): TERMINALS OF ECU