CELLULAR COMMUNICATION: TOYOTA AUDIO MULTIMEDIA SYSTEM (for Gasoline Model): TERMINALS OF ECU; 2021 - 2022 MY Corolla Corolla Hatchback GR Corolla [04/2020 - 09/2022]

Last Modified: 07-31-2024	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
I143-15 (USBV) - I143-20 (E)	DCM (telematics transceiver) power supply signal	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
I57-10 (USBV) - I55-1 (GND1)	DCM (telematics transceiver) power supply	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