Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001O4FY
Model Year Start: 2021 Model: GR Corolla Prod Date Range: [04/2020 - 09/2022]
Title: CELLULAR COMMUNICATION: TOYOTA AUDIO MULTIMEDIA SYSTEM (for Gasoline Model): TERMINALS OF ECU; 2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 09/2022]

TERMINALS OF ECU

DCM (TELEMATICS TRANSCEIVER)

*a

to Telephone Antenna (Sub)

*b

to GPS Antenna

*c

to Telephone Antenna (Main)

-

-

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

t7-1 (USB-)

USB communication line

-

-

t7-2 (USB+)

USB communication line

-

-

t7-3 (USBS) - Body ground

Shield ground

Always

Below 1 V

I143-31 (USBG) - Body ground

DCM (telematics transceiver) power supply ground signal

Always

Below 1 V

I143-17 (VOT+) - I143-20 (E)

Sent voice signal

Calling while using the operator service

A waveform synchronized with the voice signals received voice is output

I143-15 (USBV) - I143-20 (E)

DCM (telematics transceiver) power supply signal

Engine switch off

Below 1 V

Engine switch on (IG)

4.5 to 5.25 V

I143-33 (VOT-) - I143-20 (E)

Sent voice signal

Calling while using the operator service

A waveform synchronized with the received voice is output

I143-34 (VOR-) - I143-20 (E)

Receive voice signal

Receiving a call while using the operator service

A waveform synchronized with the sent voice is output

I143-18 (VOR+) - I143-20 (E)

Receive voice signal

Receiving a call while using the operator service

A waveform synchronized with the sent voice is output

RADIO AND DISPLAY RECEIVER ASSEMBLY

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*: w/o Navigation System

t2-1 (USB+)*

USB communication line

-

-

t2-2 (USB-)*

USB communication line

-

-

t2-3 (USBS)*

Shield ground

Always

Below 1 V

I57-15 (VOT+) - I55-1 (GND1)

Sent voice signal

Destination assist service in use and vehicle occupant speaking to operator

A waveform synchronized with the sent voice is output

I57-10 (USBV) - I55-1 (GND1)

DCM (telematics transceiver) power supply

Engine switch on (IG)

4.75 to 5.25 V

Engine switch off

A waveform synchronized with sound is output

I57-11 (USBG) - I55-1 (GND1)

DCM (telematics transceiver) power supply ground signal

Always

Below 1 V

I57-13 (VOR+) - I55-1 (GND1)

Receive voice signal

Destination assist service in use and operator speaking to vehicle occupant

A waveform synchronized with the received voice is output

I57-14 (VOR-) - I55-1 (GND1)

Receive voice signal

Destination assist service in use and operator speaking to vehicle occupant

A waveform synchronized with the received voice is output

I57-15 (VOT+) - I55-1 (GND1)

Sent voice signal

Destination assist service in use and operator speaking to vehicle occupant

A waveform synchronized with the voice signals received voice is output

I57-16 (VOT-) - I55-1 (GND1)

Sent voice signal

Destination assist service in use and vehicle occupant speaking to operator

A waveform synchronized with the sent voice is output

NAVIGATION ECU (w/ Navigation System)

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

t6-2 (USB-)

USB communication line

-

-

t6-1 (USB+)

USB communication line

-

-

t6-3 (USBS) - Body ground

Shield ground

Always

Below 1 V