| Last Modified: 08-22-2025 | 6.11:8.1.0 | Doc ID: RM0000003TPC2QW |
| Model Year Start: 2026 | Model: GR Corolla | Prod Date Range: [08/2025 - ] |
| Title: AUDIO / VIDEO: ACTIVE NOISE CONTROL SYSTEM (w/ Stereo Component Amplifier): TERMINALS OF ECU; 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 - ] | ||
TERMINALS OF ECU
STEREO COMPONENT EQUALIZER ASSEMBLY
Connector O228
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
O228-10 (+B) - O228-20 (GND) |
Power source |
Ignition switch off |
11 to 14 V |
|
O228-18 (IGP) - O228-20 (GND) |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
O228-20 (GND) - Body ground |
Ground |
Always |
Below 1 Ω |
Connector O227
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
O227-1 (CANH) |
CAN communication signal |
- |
- |
|
O227-4 (ACK1) |
Serial communication (UART) signal |
- |
- |
|
O227-5 (NEI) - O228-20 (GND) |
Engine pulse input signal |
Idling with warm engine |
Pulse generation (See waveform 1) |
|
O227-9 (MC2+) - O228-20 (GND) |
Active noise control microphone input signal |
Active noise control microphone (RC) tapped with finger |
Pulse generation |
|
O227-10 (MC1+) - O228-20 (GND) |
Active noise control microphone input signal |
Active noise control microphone (FC) tapped with finger |
Pulse generation |
|
O227-12 (CH4+) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-14 (CH3+) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-15 (CH2+) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-16 (CH1+) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-17 (CANL) |
CAN communication signal |
- |
- |
|
O227-20 (ACK2) |
Serial communication (UART) signal |
- |
- |
|
O227-21 (ACNT) - O228-20 (GND) |
Active noise control system control signal |
Active noise control system operating |
Below 1 V |
|
Active noise control system not operating |
3.3 V or higher |
||
|
O227-25 (MC2-) - O228-20 (GND) |
Active noise control microphone input signal |
Always |
Below 1 Ω |
|
O227-26 (MC1-) - O228-20 (GND) |
Active noise control microphone input signal |
Always |
Below 1 Ω |
|
O227-28 (CH4-) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-30 (CH3-) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-31 (CH2-) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
O227-32 (CH1-) - O228-20 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
(a) Waveform 1
HINT:
The oscilloscope waveform shown in the illustration is an example for reference only. The waveform fluctuates according to engine speed.
|
Item |
Condition |
|---|---|
|
Measurement terminal |
O227-5 (NEI) - O228-20 (GND) |
|
Tool setting |
5 V/DIV., 20 ms./DIV. |
|
Vehicle condition |
Idling after warming up |
STEREO COMPONENT AMPLIFIER ASSEMBLY
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
O226-2 (ACK1) |
Serial communication (UART) signal |
- |
- |
|
O226-3 (ACNT) - I54-3 (GND) |
Active noise control system control signal |
Active noise control system operating |
Below 1 V |
|
Active noise control system not operating |
3.3 V or higher |
||
|
O226-4 (AN4+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-5 (ASG2) - I54-3 (GND) |
Shield ground |
Always |
Below 1 Ω |
|
O226-6 (AN3+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-7 (AN2+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-8 (AN1+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-10 (ACK2) |
Serial communication (UART) signal |
- |
- |
|
O226-12 (AN4-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-13 (ASG1) - I54-3 (GND) |
Shield ground |
Always |
Below 1 Ω |
|
O226-14 (AN3-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-15 (AN2-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
O226-16 (AN1-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
ECM
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