Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001XJLJ
Model Year Start: 2022 Model: Corolla Prod Date Range: [06/2021 - 09/2022]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): TERMINALS OF ECU; 2022 MY Corolla Corolla HV [06/2021 - 09/2022]

TERMINALS OF ECU

HINT:

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

RADIO AND DISPLAY RECEIVER ASSEMBLY

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

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

LA-G - LA*1

LA-Y - LA*2

Sound signal (Front right)

Audio system playing

A waveform synchronized with sound signals is output

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

LA-Y - LA

Sound signal (Front left)

Audio system playing

A waveform synchronized with sound signals is output

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

V - LA

Sound signal (Rear left)

Audio system playing

A waveform synchronized with sound signals is output

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

V - LA

Sound signal (Rear right)

Audio system playing

A waveform synchronized with sound signals is output

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

LA-L - LA*1

LA-B - LA*2

Sound signal (Front right)

Audio system playing

A waveform synchronized with sound signals is output

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

LA-B - LA

Sound signal (Front left)

Audio system playing

A waveform synchronized with sound signals is output

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

P - LA

Sound signal (Rear left)

Audio system playing

A waveform synchronized with sound signals is output

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

P - LA

Sound signal (Rear right)

Audio system playing

A waveform synchronized with sound signals is output

I55-1 (GND1) - Body ground

LA - Body ground

Ground

Always

Below 1 V

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

LA-SB - LA

Power source (+B)

Power switch off

11 to 14 V

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

B - LA

Power source (ACC)

Power switch off

Below 1 V

Power switch on (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

Telephone switch pushed

1.51 to 1.79 V

Voice switch pushed

2.22 to 2.66 V

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

BR - LA

Steering pad switch ground

Always

Below 1 V

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

BR - LA

Vehicle speed signal

See "Check Vehicle Signal" in Operation Check

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): OPERATION CHECK

-

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

G - LA

Reverse signal

See "Check Vehicle Signal" in Operation Check

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): OPERATION CHECK

-

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

LG - LA

Mute signal

Audio system playing

Above 2.0 V

Emergency call mode

Below 1 V

I56-5 (CNH1)*3

P

Local bus communication signal

-

-

I56-6 (CNL1)*3

BR

Local bus communication signal

-

-

I56-13 (CANH)

B

CAN communication signal

-

-

I56-14 (CANL)

W

CAN communication signal

-

-

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

P - LA

Illumination signal

Light control switch off

Below 1 V

Power switch off

Light control switch in tail or head position

11 to 14 V

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

L - LA

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)

L - LA

Power source (IG)

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

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

Y - LA

Parking brake signal

See "Check Vehicle Signal" in Operation Check

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): OPERATION CHECK

-

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

B - LA*1

W - LA*2

Microphone voice signal

See "Check Microphone" in Operation Check

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): OPERATION CHECK

-

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

W - LA*1

R - LA *2

Microphone voice signal

See "Check Microphone" in Operation Check

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for HV Model with Dual Knob Type): OPERATION CHECK

-

I56-23 (MACC) - I55-1 (GND1)*2

B - LA

Microphone power supply

Power switch off

Below 1 V

Power switch on (ACC)

4 to 6 V

I56-24 (SGND) - Body ground

Shield - Body ground

Shield ground

Always

Below 1 V

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

BR - LA

Microphone connection detection signal

Always

Below 1 V

x2-1 (USV1)

-

Power source

-

-

x2-2 (US1-)

-

Data signal

-

-

x2-3 (US1+)

-

Data signal

-

-

x2-4 (UGD1)

-

Ground

-

-

x2-5 (USG1)

-

Shield ground

-

-

t2-1 (USB+)*1

-

Data signal

-

-

t2-2 (USB-)*1

-

Data signal

-

-

t2-3 (USBS)*1

-

Ground

-

-

I57-10 (USBV) - I57-11 (USBG)*1

G - V

DCM (telephone microphone assembly) power supply

Power switch off

Below 1 V

Power switch on (ACC)

4.75 to 5.25 V

I57-11 (USBG) - Body ground*1

V

Ground

-

-

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

- - LA

Power source of antenna

Power switch on (ACC)

Radio switch on and FM or AM selected

11 to 14 V

  • *1: w/ Manual (SOS) Switch
  • *2: w/o Manual (SOS) Switch
  • *3: Audio Tab Function for Combination Meter Assembly

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

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): TERMINALS OF ECU

COMBINATION METER ASSEMBLY

Click here 2022 MY Corolla Corolla HV [06/2021 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): TERMINALS OF ECU

PARKING BRAKE ECU (BRAKE ACTUATOR ASSEMBLY)

Click here 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): TERMINALS OF ECU