Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Terminals Of Ecu

TERMINALS OF ECU

RADIO AND DISPLAY RECEIVER ASSEMBLY

Standard:

Connector I55

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: for 9 Speakers

*2: w/ Parking Assist Monitor System

*3: w/ Panoramic View Monitor 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)

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, shiftposition not in R → shiftposition 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

4 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

I55-17 (REVD) - I55-1 (GND1)*2

Camera image transition signal

Normal → camera image screen change

2 V or less → 6 V or higher

I55-18 (CSWA) - I55-1 (GND1)*3

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 startup signal

Ignition switch ACC

4 V or higher

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

Multimedia ACC control signal

Power switch is pressed when playback is starting

8.0 to 13.5 V

Connector I253

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: for 9 Speakers

*2: w/ Rear View Monitor System

I253-1 (TX1+)*1

AVC-LAN communication signal

-

-

I253-2 (TX1-)*1

AVC-LAN communication signal

-

-

I253-4 (SGND) - I55-1 (GND1)

Shield ground

Always

Below 1 Ω

I253-5 (TMUT) - I55-1 (GND1)

Mute signal

Normal → Emergency call mode

2.0 V or higher → Below 1 V

I253-6 (ADPG) - I55-1 (GND1)

Stereo jack adapter assembly detection signal

Stereo jack adapter assembly disconnected → Stereo jack adapter assembly connected

3.3 V or higher→ Below 2.15 V

I253-11 (CNH1)

Local bus communication signal

Service Menu

-

I253-12 (CNL1)

Local bus communication signal

Service Menu

-

I253-13 (CANH)

CAN communication signal

Service Menu

-

I253-14 (CANL)

CAN communication signal

Service Menu

-

I253-15 (VOR+) - I55-1 (GND1)

Sound signal

Answering incoming operator call

A waveform synchronized with sound signals is output

I253-16 (VOR-) - I55-1 (GND1)

Sound signal

Answering incoming operator call

A waveform synchronized with sound signals is output

I253-17 (USBG) - Body ground

Ground

Always

Below 1 Ω

I253-18 (USBV) - I55-1 (GND1)

Telematics transceiver USB power source

Ignition switch ON

3 V or higher

I253-21 (MIN+) - I55-1 (GND1)

Microphone voice signal

Voice is being input

A waveform synchronized with sound signals is output

I253-22 (MIN-) - I55-1 (GND1)

Microphone voice signal ground

Always

Below 1 Ω

I253-23 (MACC) - I55-1 (GND1)

Microphone power source or A2B hub power source

Ignition switch ON

7.5 to 8.5 V

I253-24 (SGND) - Body ground

Shield ground

Always

Below 1 Ω

I253-25 (SNS) - I55-1 (GND1)

Microphone circuit open detection signal

Always

Below 1 Ω

I253-26 (CSLD)*2

Shield ground

Always

Below 1 Ω

I253-27 (CGND)*2

Camera ground

Always

Below 1 Ω

I253-28 (V+)*2

Video signal

-

-

I253-29 (V-)*2

Video signal

-

-

I253-30 (CA+)*2

Camera power source

Ignition switch ON

7.5 to 9.0 V

Connector I254

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: for 9 Speakers

I254-4 (FBGN) - I55-1 (GND1)*1

Shield ground

Always

Below 1 Ω

I254-15 (FB2+) - I55-1 (GND1)*1

Stereo component amplifier assembly voice signal 2

Voice is being input

A waveform synchronized with sound signals is output

I254-16 (FB2-) - I55-1 (GND1)*1

Stereo component amplifier assembly voice signal 2

Voice is being input

A waveform synchronized with sound signals is output

I254-17 (MI2+) - I55-1 (GND1)

Microphone 2 voice signal

Voice is being input

A waveform synchronized with sound signals is output

I254-18 (MI2-) - I55-1 (GND1)

Microphone 2 voice signal ground

Always

Below 1 Ω

I254-19 (SGD2) - I55-1 (GND1)

Ground

Always

Below 1 Ω

I254-20 (MAC2) - I55-1 (GND1)

Microphone 2 power source

Ignition switch ON

7.5 to 8.5 V

I254-21 (SNS2) - I55-1 (GND1)

Microphone 2 open circuit detection signal

Always

Below 1 Ω

I254-27 (FB1+) - I55-1 (GND1)*1

Stereo component amplifier assembly voice signal 1

Voice is being input

A waveform synchronized with sound signals is output

I254-28 (FB1-) - I55-1 (GND1)*1

Stereo component amplifier assembly voice signal 1

Voice is being input

A waveform synchronized with sound signals is output

Connector t5

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

t5-1 (USB+)

USB signal

-

-

t5-2 (USB-)

USB signal

-

-

t5-3 (USBS)

Shield ground

Always

Below 1 Ω

Connector I71

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

*1: for 6 Speakers

*2: for 9 Speakers

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

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

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

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I71-3 (RL+) - I55-1 (GND)

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 (GND)

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 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

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

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I71-8 (RL-) - I55-1 (GND)

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 (GND)

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 I279

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

I279-1 (USV1)

Power source

Ignition switch ON

4.75 to 5.25 V

I279-2 (US1-)

USB communication signal

-

-

I279-3 (US1+)

USB communication signal

-

-

I279-4 (UGD1)

Ground

Always

Below 1 Ω

I279-5 (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-2 (SUB)

Radio signal (SUB)

-

-

RA-2a (GND)

Ground

-

-

RA-3 (MAIN)

Radio signal (MAIN)

-

-

RA-3a (GND)

Ground

-

-

Connector SXM (w/ SXM Function)

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

SXM-1 (XM)

SXM Radio Signal

-

-

Connector GNSS

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

GNSS-1 (GPS)

GNSS signal

-

-

Connector I278 (w/ Parking Assist Monitor System)

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

I278-1 (CGND)

Camera ground

Always

Below 1 Ω

I278-2 (CB+)

Camera power source

Ignition switch ON

7.5 to 9.0 V

I278-3 (CV+)

Video signal

-

-

I278-4 (CV-)

Video signal

-

-

I278-5 (SGND)

Shield ground

Always

Below 1 Ω

(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.

STEREO COMPONENT AMPLIFIER ASSEMBLY (for 9 Speakers)

Standard:

Connector I233

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

I233-1 (+B) - I233-3 (GND)

Power source (+B)

Ignition switch off

11 to 14 V

I233-3 (GND) - Body ground

Ground

Always

Below 1 Ω

I233-9 (RL+) - I233-3 (GND)

Rear sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I233-10 (WF1+) - I233-3 (GND)

Sound signal (woofer)

Audio system playing

A waveform synchronized with sound signals is output

I233-11 (RR+) - I233-3 (GND)

Rear sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I233-12 (TWL+) - I233-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I233-13 (FL+) - I233-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I233-14 (TWR+) - I233-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I233-15 (FR+) - I233-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I233-16 (+B2) - I233-3 (GND)

Power source (+B)

Ignition switch off

11 to 14 V

I233-18 (GND2) - Body ground

Ground

Always

Below 1 Ω

I233-24 (RL-) - I233-3 (GND)

Rear sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I233-25 (WF1-) - I233-3 (GND)

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

I233-26 (RR-) - I233-3 (GND)

Rear sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I233-27 (TWL-) - I233-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I233-28 (FL-) - I233-3 (GND)

Front sound signal (LH)

Audio system playing

A waveform synchronized with sound signals is output

I233-29 (TWR-) - I233-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

I233-30 (FR-) - I233-3 (GND)

Front sound signal (RH)

Audio system playing

A waveform synchronized with sound signals is output

Connector I234

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

I234-1 (MUTE) - I233-3 (GND)

Mute signal

Normal → Mute

3.5 V or higher → Below 1 V

I234-2 (L-) - I233-3 (GND)

Input voice signal (LH)

Voice is being input

A waveform synchronized with sound signals is output

I234-3 (L+) - I233-3 (GND)

Input voice signal (LH)

Voice is being input

A waveform synchronized with sound signals is output

I234-4 (R-) - I233-3 (GND)

Input voice signal (RH)

Voice is being input

A waveform synchronized with sound signals is output

I234-5 (R+) - I233-3 (GND)

Input voice signal (RH)

Voice is being input

A waveform synchronized with sound signals is output

I234-6 (SLD) - Body ground

Shield ground

Always

Below 1 Ω

I234-7 (TX-)

AVC-LAN communication signal

Service Menu

-

I234-8 (TX+)

AVC-LAN communication signal

Service Menu

-

I234-9 (FB1-) - I233-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I234-10 (FB1+) - I233-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I234-11 (SPD) - I233-3 (GND)

Vehicle speed signal

Wheel being rotated

Waveform 1

I234-13 (SLD1) - Body ground

Ground

Always

Below 1 Ω

I234-14 (II1-) - I233-3 (GND)

Input voice signal (LH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I234-15 (II1+) - I233-3 (GND)

Input voice signal (LH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I234-16 (II2-) - I233-3 (GND)

Input voice signal (RH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I234-17 (II2+) - I233-3 (GND)

Input voice signal (RH)

Interrupt voice is being input

A waveform synchronized with sound signals is output

I234-18 (SLD2) - Body ground

Sound signal

Always

Below 1 Ω

I234-21 (FB2-) - I233-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I234-22 (FB2+) - I233-3 (GND)

Sound signal

Audio system playing

A waveform synchronized with sound signals is output

I234-24 (TMUT) - Body ground

Mute signal

Normal → Mute

3.5 V or higher → Below 1 V

(a) Waveform 1

Item

Content

Measurement terminal

I234-11 (SPD) - I233-3 (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.

COMBINATION METER ASSEMBLY

HINT:

Click here

TELEMATICS TRANSCEIVER

HINT:

Click here

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