| Last Modified: 12-11-2024 | 6.11:8.1.0 | Doc ID: RM100000002PU4D |
| Model Year Start: 2025 | Model: GR Corolla | Prod Date Range: [09/2024 - ] |
| Title: AUDIO / VIDEO: ACTIVE NOISE CONTROL SYSTEM (w/ Stereo Component Amplifier): TERMINALS OF ECU; 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2024 - ] | ||
TERMINALS OF ECU
CHECK STEREO COMPONENT EQUALIZER ASSEMBLY
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
I241-14 (+B) - I241-28 (GND) |
Power source |
Ignition switch off |
11 to 14 V |
|
I241-27 (IGP) - I241-28 (GND) |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
I241-28 (GND) - Body ground |
Ground |
Always |
Below 1 Ω |
|
I241-7 (MC1+) - I241-28 (GND) |
Active noise control microphone input signal |
Active noise control microphone (FR) tapped with finger |
Pulse generation |
|
I241-21 (MC1-) - I241-28 (GND) |
Active noise control microphone input signal |
Always |
Below 1 Ω |
|
I241-6 (MC2+) - I241-28 (GND) |
Active noise control microphone input signal |
Active noise control microphone (FR) tapped with finger |
Pulse generation |
|
I241-20 (MC2-) - I241-28 (GND) |
Active noise control microphone input signal |
Always |
Below 1 Ω |
|
I241-3 (NEI) - I241-28 (GND) |
Engine pulse signal |
Idling with warm engine |
Pulse generation (See waveform 1) |
|
I241-12 (CH1+) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-26 (CH1-) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-11 (CH2+) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-25 (CH2-) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-10 (CH3+) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-24 (CH3-) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-8 (CH4+) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-22 (CH4+) - I241-28 (GND) |
Active noise control microphone output signal |
Active noise control system operating |
Pulse generation |
|
I241-17 (ACNT) - I241-28 (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 |
||
|
I241-2 (ACK1) |
Serial communication (UART) signal |
- |
- |
|
I241-16 (ACK2) |
Serial communication (UART) signal |
- |
- |
|
I241-1 (CANH) |
CAN communication signal |
- |
- |
|
I241-15 (CANL) |
CAN communication signal |
- |
- |
(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 |
I241-3 (NEI) - I241-28 (GND) |
|
Tool setting |
5 V/DIV., 20 ms./DIV. |
|
Vehicle condition |
Idling with warm engine |
STEREO COMPONENT AMPLIFIER ASSEMBLY
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
I240-2 (ACK1) |
Serial communication (UART) signal |
- |
- |
|
I240-3 (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 |
||
|
I240-4 (AN4+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-5 (ASG2) - I54-3 (GND) |
Shield ground |
Always |
Below 1 Ω |
|
I240-6 (AN3+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-7 (AN2+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-8 (AN1+) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-10 (ACK2) |
Serial communication (UART) signal |
- |
- |
|
I240-12 (AN4-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-13 (ASG1) - I54-3 (GND) |
Shield ground |
Always |
Below 1 Ω |
|
I240-14 (AN3-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-15 (AN2-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
|
I240-16 (AN1-) - I54-3 (GND) |
Active noise control microphone input signal |
Active noise control system operating |
Pulse generation |
ECM
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