Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000292X9
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Single Knob Type): TERMINALS OF ECU; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

TERMINALS OF ECU

HINT:

Check from the rear of the connector while it is connected to the components.

RADIO AND DISPLAY RECEIVER ASSEMBLY

Connector I55

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: w/ "JBL" Sound System

I55-1 (GND1) - Body ground

Ground

Always

Below 1 Ω

I55-2 (GND2) - Body ground

Ground

Always

Below 1 Ω

I55-3 (+B) - I55-1 (GND1)

No.1 stereo jack adapter assembly power source

Ignition switch off

11 to 14 V

I55-4 (+B1) - I55-1 (GND1)

Power source (+B)

Ignition switch off

11 to 14 V

I55-5 (REV) - I55-1 (GND1)

Reverse Signal

Ignition switch ON, shift position not in R → shift position in R

2 V or less → 11 to 14 V

I55-7 (PKB) - I55-1 (GND1)

Parking Brake Signal

Ignition switch ON

Parking brake released → Ignition switch ON

Parking brake applied

0.4 V or less → 3 V or higher

I55-8 (SPD) - I55-1 (GND1)

Vehicle speed signal

Wheel being rotated

Waveform 1

I55-12 (MUT1) - I55-1 (GND1)*1

Mute signal

Audio system playing → Mute

3.5 V or higher → Below 1 V

I55-15 (IG) - I55-1 (GND1)

Power source (IG)

Ignition switch ON

11 to 14 V

I55-16 (ACC1) - I55-1 (GND1)

Power source (ACC)

Ignition switch ACC

11 to 14 V

I55-18 (CSWA) - I55-1 (GND1)

Camera image transition signal

Normal → camera image screen change

2 V or less → 6 V or higher

I55-20 (SWG) - I55-1 (GND1)

Ground

Always

Below 1 Ω

I55-21 (SW1) - I55-1 (GND1)

Steering pad switch signal

No switch pushed → Volume- switch pushed → Volume+ switch pushed → Seek- switch pushed → Seek+ switch pushed

2.7 V or higher → approximately 2.3 V → approximately 1.6 V → approximately 1.0 V → 0.8 V or less

I55-22 (SW2) - I55-1 (GND1)

Steering pad switch signal

No switch pushed → Voice switch pushed → Off hook switch pushed → On hook switch pushed → MODE switch pushed

2.7 V or higher → approximately 2.3 V → approximately 1.6 V → approximately 1.0 V → 0.8 V or less

I55-24 (ILL-) - I55-1 (GND1)

Illumination signal ground

Dimmed

Pulse generation

I55-25 (ILL+) - I55-1 (GND1)

Illumination signal

Light control switch not in tail or head position

11 to 14 V

I55-26 (WK2) - I55-1 (GND1)*1

Stereo component amplifier assembly start up signal

Ignition switch ACC

4 V or higher

I55-28 (ACCO) - I55-1 (GND1)

Multimedia ACC controlsignal

Power switch is pressed when playback is starting

8.0 to 13.5 V

Connector I175

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: w/ "JBL" Sound System

*2: w/ DCM (Telematics Transceiver)

I175-1 (TX1+)*1

AVC-LAN communication signal

-

-

I175-2 (TX1-)*1

AVC-LAN communication signal

-

-

I175-4 (SGND) - I55-1 (GND1)

Shield ground

Always

Below 1 Ω

I175-5 (TMUT) - I55-1 (GND1)*2

Mute signal

Normal → Emergency call mode

2.0 V or higher → Below 1 V

I175-6 (ADPG) - I55-1 (GND1)

No. 1 stereo jack adapterassembly detection signal

No. 1 stereo jack adapterassembly disconnected →No. 1 stereo jack adapterassembly connected

Below3.2 V

I175-11 (CNH1)

Local bus communication signal

Service Menu

-

I175-12 (CNL1)

Local bus communication signal

Service Menu

-

I175-13 (CANH)

CAN communication signal

Service Menu

-

I175-14 (CANL)

CAN communication signal

Service Menu

-

I175-15 (VOR+)*2

Sound signal

Answering incomingoperator call

A waveform synchronizedwith sound signals isoutput

I175-16 (VOR-)*2

Sound signal

Answering incomingoperator call

A waveform synchronizedwith sound signals isoutput

I175-17 (USBG) - Body ground

Ground

Always

Below 1 Ω

I175-18 (USBV) - I55-1 (GND1)

Telematics transceiver USB power source

Ignition switch ON

3 V or higher

I175-21 (MIN+) - I55-1 (GND1)

Microphone voice signal

Voice is being input

A waveform synchronized with sound signals is output

I175-22 (MIN-) - I55-1 (GND1)

Microphone voice signal ground

Always

Below 1 Ω

I175-24 (SGND) - Body ground

Shield ground

Always

Below 1 Ω

I175-25 (SNS) - I55-1 (GND1)

Microphone circuit open detection signal

Always

Below 1 Ω

I175-26 (CSLD) - I55-1 (GND1)

Shield ground

Always

Below 1 Ω

I175-27 (CGND) - I55-1 (GND1)

Camera Ground

Always

Below 1 Ω

I175-28 (V+) - I175-29 (V-)

Video Signal

Ignition switch ON, shift position in R

-

I175-29 (V-) - I55-1 (GND1)

Video Signal

Always

Below 1 Ω

I175-30 (CA+) - I55-1 (GND1)

Camera power source

Ignition switch ON

7.5 to 9.0 V

Connector I176

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*: w/ "JBL" Sound System

I176-4 (FBGN) - I55-1 (GND1)*

Shield ground

Always

Below 1 Ω

I176-15 (FB2+) - I55-1 (GND1)*

Stereo component amplifier assembly voice signal 2

Voice is being input

A waveform synchronized with sound signals is output

I176-16 (FB2-) - I55-1 (GND1)*

Stereo component amplifier assembly voice signal 2

Voice is being input

A waveform synchronized with sound signals is output

I176-17 (MI2+) - I55-1 (GND1)

Microphone 2 voice signal

Voice is being input

A waveform synchronizedwith sound signals isoutput

I176-18 (MI2-) - I55-1 (GND1)

Microphone 2 voice signal ground

Always

Below 1 Ω

I176-19 (SGD2) - I55-1 (GND1)

Ground

Always

Below 1 Ω

I176-20 (MAC2) - I55-1 (GND1)

Microphone 2 powersource

Ignition switch ON

7.5 to 8.5 V

I176-21 (SNS2) - I55-1 (GND1)

Microphone 2 open circuitdetection signal

Always

Below 1 Ω

I176-27 (FB1+) - I55-1 (GND1)*

Stereo component amplifier assembly voice signal 1

Voice is being input

A waveform synchronized with sound signals is output

I176-28 (FB1-) - I55-1 (GND1)*

Stereo component amplifier assembly voice signal 1

Voice is being input

A waveform synchronized with sound signals is output

Connector I71

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: w/o "JBL" Sound System

*2: w/ "JBL" Sound System

*3: except 2 Speakers

I71-1 (FR+) - I55-1 (GND1)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I71-2 (FL+) - I55-1 (GND1)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I71-3 (RL+) - I55-1 (GND1)*3

Sound signal*1

Interrupt sound signal*2

Audio system playing*1

Interrupt sound signal being output*2

A waveform synchronized with sound signals is output

I71-4 (RR+) - I55-1 (GND1)*3

Sound signal*1

Interrupt sound signal*2

Audio system playing*1

Interrupt sound signal being output*2

A waveform synchronized with sound signals is output

I71-6 (FR-) - I55-1 (GND1)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I71-7 (FL-) - I55-1 (GND1)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I71-8 (RL-) - I55-1 (GND1)*3

Sound signal*1

Interrupt sound signal*2

Audio system playing*1

Interrupt sound signal being output*2

A waveform synchronized with sound signals is output

I71-9 (RR-) - I55-1 (GND1)*3

Sound signal*1

Interrupt sound signal*2

Audio system playing*1

Interrupt sound signal being output*2

A waveform synchronized with sound signals is output

Connector t8 (w/ DCM (Telematics Transceiver))

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

t8-1 (USB+)

USB signal

-

-

t8-2 (USB-)

USB signal

-

-

t8-3 (USBS)

Shield ground

Always

Below 1 Ω

Connector x5

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

x5-1 (USV1)

Power source

Ignition switch ON

4.75 to 5.25 V

x5-2 (US1-)

USB communication signal

-

-

x5-3 (US1+)

USB communication signal

-

-

x5-4 (UGD1)

Ground

Always

Below 1 Ω

x5-5 (USG1)

Shield ground

Always

Below 1 Ω

Connector RA

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

RA-1 (ANT+)

Radio antenna power source

Receiving radio broadcast

7 to 16 V

RA-2a (GND)

Ground

-

-

RA-3 (MAIN)

Radio signal

-

-

RA-3a (GND)

Ground

-

-

Connector GNSS

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

GNSS-1 (GPS)

GNSS signal

-

-

Connector SXM (with SXM Function)

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

SXM-1(XM)

SXM Radio Signal

-

-

(a) Waveform 1

Item

Content

Measurement terminal

I55-8 (SPD) - I55-1 (GND1)

Measurement setting

5 V/DIV., 20 ms/DIV

Condition

Wheel being rotated

HINT:

The period changes depending on the rotation speed of the wheels.

(b) Reference (Oscilloscope waveform):

(1) Waveform 1 (camera lens not covered, displaying an image)

Item

Content

Measurement terminal

I175-28 (V+) - I175-29 (V-)

Measurement setting

200 mV/DIV., 50 μs/DIV.

Condition

Ignition switch ON, shift lever in R

HINT:

  • The video waveform changes according to the image sent by the rear television camera assembly.
  • The video waveform is constantly output when the ignition switch ACC.

*a

Waveform 1 (camera lens not covered, displaying an image)

*b

Waveform 2 (camera lens covered, blacking out the screen)

*c

Synchronization Signal

*d

Video Waveform

(2) Waveform 2 (camera lens covered, blacking out the screen)

Item

Content

Measurement terminal

I175-28 (V+) - I175-29 (V-)

Measurement setting

200 mV/DIV., 50 μs/DIV.

Condition

Ignition switch ON, shift lever in R

HINT:

  • The video waveform changes according to the image sent by the rear television camera assembly.
  • The video waveform is constantly output when the ignition switch ACC.

STEREO COMPONENT AMPLIFIER ASSEMBLY (w/ "JBL" Sound System)

Connector I54

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

I54-1 (+B) - I54-3 (GND)

Power source (+B)

Ignition switch off

11 to 14 V

I54-3 (GND) - Body ground

Ground

Always

Below 1 Ω

I54-8 (WF2+) - I54-3 (GND)

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

I54-9 (RL+) - I54-3 (GND)

Rear sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I54-10 (WF1+) - I54-3 (GND)

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

I54-11 (RR+) - I54-3 (GND)

Rear sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I54-12 (TWL+) - I54-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I54-13 (FL+) - I54-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I54-14 (TWR+) - I54-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I54-15 (FR+) - I54-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I54-16 (+B2) - I54-3 (GND)

Power source (+B)

Ignition switch off

11 to 14 V

I54-18 (GND2) - Body ground

Ground

Always

Below 1 Ω

I54-23 (WF2-) - I54-3 (GND)

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

I54-24 (RL-) - I54-3 (GND)

Rear sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I54-25 (WF1-) - I54-3 (GND)

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

I54-26 (RR-) - I54-3 (GND)

Rear sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I54-27 (TWL-) - I54-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I54-28 (FL-) - I54-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I54-29 (TWR-) - I54-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I54-30 (FR-) - I54-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

Connector I68

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

I68-1 (MUTE) - I54-3 (GND)

Mute signal

Normal → Mute

3.5 V or higher → Below 1 V

I68-2 (L-) - I54-3 (GND)

Input voice signal (LH)

Voice is being input

A waveform synchronized with sound signals is output

I68-3 (L+) - I54-3 (GND)

Input voice signal (LH)

Voice is being input

A waveform synchronized with sound signals is output

I68-4 (R-) - I54-3 (GND)

Input voice signal (RH)

Voice is being input

A waveform synchronized with sound signals is output

I68-5 (R+) - I54-3 (GND)

Input voice signal (RH)

Voice is being input

A waveform synchronized with sound signals is output

I68-6 (SLD) - Body ground

Shield ground

Always

Below 1 Ω

I68-7 (TX-)

AVC-LAN communication signal

Service Menu

-

I68-8 (TX+)

AVC-LAN communication signal

Service Menu

-

I68-9 (FB1-) - I54-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I68-10 (FB1+) - I54-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I68-11 (SPD) - I54-3 (GND)

Vehicle speed signal

Wheel being rotated

Waveform 1

I68-12 (WK2) - I54-3 (GND)

Stereo component amplifier assembly start signal

Ignition switch ACC

4 V or higher

I68-13 (SLD1) - Body ground

Ground

Always

Below 1 Ω

I68-14 (ll1-) - I54-3 (GND)

Input voice signal (LH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I68-15 (ll1+) - I54-3 (GND)

Input voice signal (LH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I68-16 (ll2-) - I54-3 (GND)

Input voice signal (RH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I68-17 (ll2+) - I54-3 (GND)

Input voice signal (RH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I68-18 (SLD2) - Body ground

Shield ground

Always

Below 1 Ω

I68-21 (FB2-) - I54-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I68-22 (FB2+) - I54-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I68-24 (TMUT) - I54-3 (GND)

Mute signal

Normal → Mute

3.5 V or higher → Below 1 V

(a) Waveform 1

Item

Content

Measurement terminal

I68-11 (SPD) - I54-3 (GND)

Measurement setting

5 V/DIV., 20 ms/DIV.

Condition

Wheel being rotated

HINT:

The period changes depending on the rotation speed of the wheels.

DCM (TELEMATICS TRANSCEIVER)

Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): TERMINALS OF ECU

COMBINATION METER ASSEMBLY

HINT:

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): TERMINALS OF ECU

REAR TELEVISION CAMERA ASSEMBLY

HINT:

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for Single Knob Radio and Display Receiver): TERMINALS OF ECU