Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001KRDI
Model Year Start: 2020 Model: GR Corolla Prod Date Range: [09/2019 - 04/2020]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: TERMINALS OF ECU; 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]

TERMINALS OF ECU

HINT:

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

RADIO AND DISPLAY RECEIVER ASSEMBLY

*1

w/ Manual (SOS) Switch

*2

w/o Manual (SOS) Switch

*3

w/ AUX Function

*4

w/o AUX Function

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

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

LA-Y - W-B*2*4

LA-G - W-B*2*5

G - W-B*3

Sound signal (Front right)*2

Sound signal (Right)*3

Audio system playing

A waveform synchronized with sound signals is output

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

LA-Y - W-B*2

W - W-B*3

Sound signal (Front left)*2

Sound signal (Left)*3

Audio system playing

A waveform synchronized with sound signals is output

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

V - W-B*2

L - W-B*3

Sound signal (Rear left)*2

Voice signal*3

Audio system playing*2

Voice guidance sounding*3

A waveform synchronized with sound signals is output*2

A waveform synchronized with voice signals is output*3

I71-4 (RR+) - I55-1 (GND1)*2

V - W-B

Sound signal (Rear right)

Audio system playing

A waveform synchronized with sound signals is output

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

LA-B - W-B*2*4

LA-L - W-B*2*5

R - W-B*3

Sound signal (Front right)*2

Sound signal (Right)*3

Audio system playing

A waveform synchronized with sound signals is output

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

LA-B - W-B*2

B - W-B*3

Sound signal (Front left)*2

Sound signal (Left)*3

Audio system playing

A waveform synchronized with sound signals is output

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

P - W-B*2

R - W-B*3

Sound signal (Rear left)*2

Voice signal*3

Audio system playing*2

Voice guidance sounding*3

A waveform synchronized with sound signals is output*2

A waveform synchronized with voice signals is output*3

I71-9 (RR-) - I55-1 (GND1)*2

P - W-B

Sound signal (Rear right)

Audio system playing

A waveform synchronized with sound signals is output

I55-1 (GND1) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

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

SB - W-B*6

LA-SB - W-B*7

Power source (+B)

Always

11 to 14 V

I55-5 (TX1+)*3

R

AVC-LAN communication signal

-

-

I55-6 (TX1-)*3

L

AVC-LAN communication signal

-

-

I55-10 (AGND) - Body ground*10

Shield - Body ground

Shield ground

Always

Below 1 V

I55-11 (VAL+) - I55-13 (VA-)*10

B - R

Sound signal (Left)

External device playing (When stereo jack used)

A waveform synchronized with sound signals is output

I55-12 (VAR+) - I55-13 (VA-)*10

W - R

Sound signal (Right)

External device playing (When stereo jack used)

A waveform synchronized with sound signals is output

I55-13 (VA-) - I55-1 (GND1)*10

R - W-B

Ground

Always

Below 1 V

I55-14 (ADPG) - I55-1 (GND1)*10

L - W-B

External device connection detection signal

External device connected

Below 1 V

External device not connected

1.1 to 1.9 V

I55-15 (ACC1) - I55-1 (GND1)

B - W-B

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch to ACC

11 to 14 V

I55-21 (SW1) - I55-24 (SWG)

L - BR

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

Seek+ switch pushed

0.27 to 0.35 V

Seek- switch pushed

0.86 to 1.03 V

Volume+ switch pushed

1.51 to 1.79 V

Volume- switch pushed

2.22 to 2.66 V

I55-22 (SW2) - I55-24 (SWG)

G - BR

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

MODE switch pushed

0.27 to 0.35 V

On/off hook switch pushed

1.51 to 1.79 V

Voice switch pushed

2.22 to 2.66 V

I55-24 (SWG) - I55-1 (GND1)

BR - W-B

Steering pad switch ground

Always

Below 1 V

I55-25 (MUT1) - I55-1 (GND1)*3

LG - W-B

Mute signal

Audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

I55-27 (SPD) - I55-1 (GND1)

V - W-B*6

BR - W-B*7

Vehicle speed signal

See "Check Vehicle Signal" in Operation Check

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I55-28 (REV) - I55-1 (GND1)

G - W-B

Reverse signal

See "Check Vehicle Signal" in Operation Check

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I56-3 (TMUT) - I55-1 (GND1)*2*5

LG - W-B

Mute signal

Audio system playing

Above 2.0 V

Emergency call mode

Below 1 V

I56-5 (CNH1)

L*6

P*7

Local bus communication signal

-

-

I56-6 (CNL1)

Y*6

BR*7

Local bus communication signal

-

-

I56-13 (CANH)

B

CAN communication signal

-

-

I56-14 (CANL)

W

CAN communication signal

-

-

I56-15 (ILL+) - I55-1 (GND1)

BR - W-B*6

P - W-B*7

Illumination signal

Light control switch off

Below 1 V

Light control switch in tail or head position

11 to 14 V

I56-16 (ILL-) - I55-1 (GND1)

W-B - W-B*6

L - W-B*7

Illumination signal

Light control switch off

Below 1 V

Light control switch in tail or head position

Pulse generation

I56-19 (IG) - I55-1 (GND1)

R - W-B*6

L - W-B*7

Power source (IG)

Ignition switch off

Below 1 V

Ignition switch to ON

11 to 14 V

I56-20 (PKB) - I55-1 (GND1)

LG - W-B*6

Y - W-B*8

GR - W-B*9

Parking brake signal

See "Check Vehicle Signal" in Operation Check

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I56-21 (MIN+) - I55-1 (GND1)

W - W-B*4

B - W-B*5

Microphone voice signal

See "Check Microphone" in Operation Check

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I56-22 (MIN-) - I55-1 (GND1)

R - W-B*4

W - W-B*5

Microphone voice signal

See "Check Microphone" in Operation Check

Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I56-23 (MACC) - I55-1 (GND1)*4

B - W-B

Microphone power supply

Ignition switch off

Below 1 V

Ignition switch to ACC

4 to 6 V

I56-24 (SGND) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 V

I56-25 (SNS2) - I55-1 (GND1)

BR - W-B

Microphone connection detection signal

Always

Below 1 V

I115-1 (USV1)*10

-

Power source

-

-

I115-2 (US1-)*10

-

Data signal

-

-

I115-3 (US1+)*10

-

Data signal

-

-

I115-4 (UGD1)*10

-

Ground

-

-

I115-5 (USG1)*10

Shielded

Shield ground

-

-

x2-1 (USV1)*11

-

Power source

-

-

x2-2 (US1-)*11

-

Data signal

-

-

x2-3 (US1+)*11

-

Data signal

-

-

x2-4 (UGD1)*11

-

Ground

-

-

x2-5 (USG1)*11

Shielded

Shield ground

-

-

t5-1 (US4+)*5

s3-1 (US4+)*4

-

USB communication line

-

-

t5-2 (US4-)*5

s3-2 (US4-)*4

-

USB communication line

-

-

t5-3 (UGD4) - Body ground*5

s3-3 (UGD4) - Body ground*4

Shielded - Body ground

Shield ground

Always

Below 1 Ω

t4-1 (GV2-)*5

s2-1 (GV2-)*4

-

Video signal (Digital)

-

-

t4-2 (GV2+)*5

s2-2 (GV2+)*4

-

Video signal (Digital)

-

-

t4-3 (GVG2) - Body ground*5

s2-3 (GVG2) - Body ground*4

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I57-7 (SUP) - I55-1 (GND1)

W - W-B

Start up signal

20 seconds elapse after turning the ignition switch to ACC

11 to 14 V

I57-10 (USBV)*5

G

DCM (telematics transceiver) power supply

Ignition switch off

Below 1 V

Ignition switch to ACC

4.75 to 5.25 V

I57-11 (USBG)*5

V

Ground

-

-

I57-19 (RST)*1

L

-

-

-

I57-22 (SI+) - I55-1 (GND1)

B - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

I57-23 (SI-) - I55-1 (GND1)

W - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

I57-24 (SGND) - I55-1 (GND1)

Shielded - W-B

Shield ground

Always

Below 1 Ω

I57-25 (MCO+) - I57-26 (MCO-)

B - W

Microphone voice signal

See "Check Microphone (DCU)" in Operation Check

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I57-26 (MCO-) - I55-1 (GND1)

W - W-B

Microphone voice signal

See "Check Microphone (DCU)" in Operation Check

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I57-28 (REV2) - I55-1 (GND1)

B - W-B*6

Y - W-B*7

Reverse signal

Engine running, shift lever not in R → in R

2 V or less → 11 to 14 V

RA-5 (ANT+) - I55-1 (GND1)

- - W-B

Power source of antenna

Ignition switch to ACC

Radio switch on and FM or AM selected

11 to 14 V

  • *1: Terminal exists but is not used
  • *2: w/o Stereo Component Amplifier
  • *3: w/ Stereo Component Amplifier
  • *4: w/o Manual (SOS) Switch
  • *5: w/ Manual (SOS) Switch
  • *6: for Hatchback Model
  • *7: for Sedan Model
  • *8: w/ Electric Parking Brake System
  • *9: w/o Electric Parking Brake System
  • *10: w/ AUX Function
  • *11: w/o AUX Function

NAVIGATION ECU

*1

w/ Manual (SOS) Switch

*2

w/o Manual (SOS) Switch

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

I69-6 (VOI+) - I69-23 (GND)

B - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

I69-7 (VOI-) - I69-23 (GND)

W - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with sound is output

I69-8 (SLD1) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I69-9 (SPD) - I69-23 (GND)

BR - W-B*4

G - W-B*5

Vehicle speed signal

See "Check GPS and Vehicle Sensors" in Operation Check

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I69-10 (+B) - I69-23 (GND)

V - W-B*4

B - W-B*5

Power source (+B)

Always

11 to 14 V

I69-13 (MIC+) - I69-23 (GND)

B - W-B

Microphone voice signal

See "Microphone Check (MEU)" in Operation Check

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I69-14 (MIC-) - Body ground

W - Body ground

Microphone voice signal

See "Microphone Check (MEU)" in Operation Check

2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: OPERATION CHECK

-

I69-19 (REV2) - I69-23(GND)

B - W-B*4

Y - W-B*5

Reverse signal

Engine running, shift lever not in R → in R

2 V or less → 11 to 14 V

I69-21 (SUP) - I69-23 (GND)

W - W-B

Power source (ACC)

20 seconds elapse after turning the ignition switch to ACC

11 to 14 V

I69-22 (RST)*1

L

-

-

-

I69-23 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

t6-1 (USB+)

-

USB communication line

-

-

t6-2 (USB-)

-

USB communication line

-

-

t6-3 (USBS) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

t3-1 (GVO-)*2

s1-1 (GVO-)*3

-

Video signal (Digital)

-

-

t3-2 (GVO+)*2

s1-2 (GVO+)*3

-

Video signal (Digital)

-

-

t3-3 (GVG1) - Body ground*2

s1-3 (GVG1) - Body ground*3

Shielded - Body ground

Shield ground

Always

Below 1 Ω

t3-4 (US4+)*2

s1-4 (US4+)*3

-

USB communication line

-

-

t3-5 (US4-)*2

s1-5 (US4-)*3

-

USB communication line

-

-

t3-6 (UGD4) - Body ground*2

s1-6 (UGD4) - Body ground*3

Shielded - Body ground

Shield ground

Always

Below 1 Ω

  • *1: Terminal exists but is not used
  • *2: w/ Manual (SOS) Switch
  • *3: w/o Manual (SOS) Switch
  • *4: for Hatchback Model
  • *5: for Sedan Model

STEREO COMPONENT AMPLIFIER ASSEMBLY (w/ Stereo Component Amplifier Assembly)

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

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

B - W-B

Power source (+B)

Always

11 to 14 V

I54-3 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

I54-8 (WF2+) - I54-3 (GND)*2

P - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

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

B - W-B*2

R - W-B*3

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sound signals is output

I54-10 (WF1+) - I54-3 (GND)*2

LG - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

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

R - W-B

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sound signals is output

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

P - W-B*2

R - W-B*3

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

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

G - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

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

P - W-B*1

Y - W-B*4

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

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

Y - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

I54-23 (WF2-) - I54-3 (GND)*2

V - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

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

G - W-B*2

W - W-B*3

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sound signals is output

I54-25 (WF1-) - I54-3 (GND)*2

L - W-B

Sound signal (Woofer)

Audio system playing

A waveform synchronized with sound signals is output

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

W - W-B

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sound signals is output

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

V - W-B*2

W - W-B*3

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

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

L - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

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

BR - W-B*1

B - W-B*4

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

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

B - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

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

LG - W-B

Mute signal

Ignition switch to ACC

Audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

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

B - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

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

W - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

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

R - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

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

G - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

I68-6 (SLD) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 V

I68-7 (TX-)

L

AVC-LAN communication signal

-

-

I68-8 (TX+)

R

AVC-LAN communication signal

-

-

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

W - W-B*2

V - W-B*3

Vehicle speed signal

Ignition switch to ON

Wheel being rotated

Pulse generation

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

R - W-B*2

BR - W-B*3

Power source (ACC)

Ignition switch off

Below 1 V

Ignition switch to ACC

11 to 14 V

I68-14 (II1-) - I54-3 (GND)

R - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

I68-15 (II1+) - I54-3 (GND)

L - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

I68-18 (SLD1) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 V

I68-24 (TMUT) - Body ground*1

L - Body ground

Mute signal

Ignition switch to ACC

Audio system playing

2.0 V or higher

Emergency call mode

Below 1 V

  • *1: w/ Manual (SOS) Switch

    *2: for Sedan Model

    *3: for Hatchback Model

    *4: w/o Manual (SOS) Switch

DCM (TELEMATICS TRANSCEIVER) (w/ Manual (SOS) Switch)

for Sedan: Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; TELEMATICS: TELEMATICS SYSTEM (for Sedan): TERMINALS OF ECU

for Hatchback: Click here 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; TELEMATICS: TELEMATICS SYSTEM (for Hatchback): TERMINALS OF ECU

COMBINATION METER ASSEMBLY

Click here 2020 MY Corolla Corolla Hatchback GR Corolla [03/2019 - 04/2020]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for Gasoline Model): TERMINALS OF ECU

HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) (w/ Headup Display System)

Click here 2019 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 09/2022]; METER / GAUGE / DISPLAY: HEADUP DISPLAY SYSTEM: TERMINALS OF ECU

SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

Click here 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022]; PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for Gasoline Model): TERMINALS OF ECU