| Last Modified: 12-11-2024 | 6.11:8.1.0 | Doc ID: RM100000002PU4I |
| Model Year Start: 2025 | Model: GR Corolla | Prod Date Range: [09/2024 - ] |
| Title: AUDIO / VIDEO: ACTIVE NOISE CONTROL SYSTEM (w/o 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 |
|---|---|---|---|
| *: w/ Telematics System | |||
|
I242-15 (+B) - I242-30 (GND) |
Power source |
Always |
11 to 14 V |
|
I242-29 (IGP) - I242-30 (GND) |
Power source (IG) |
Ignition switch ON |
11 to 14 V |
|
I242-30 (GND) - Body ground |
Ground |
Always |
Below 1 Ω |
|
I242-4 (TMUT)* |
Mute Signal |
- |
- |
|
I242-14 (WK2) - I242-30 (GND) |
Stereo component equalizer assembly start up signal |
Ignition switch ACC |
4 V or higher |
|
I242-3 (NEI) - I242-30 (GND) |
Engine pulse signal |
Idling with warm engine |
Pulse generation (See waveform 1) |
|
I242-8 (FRI+) |
Sound signal (Front Right) |
- |
- |
|
I242-23 (FRI-) |
Sound signal (Front Right) |
- |
- |
|
I242-9 (FLI+) |
Sound signal (Front Left) |
- |
- |
|
I242-24 (FLI-) |
Sound signal (Front Left) |
- |
- |
|
I242-7 (ASG1) |
Shielded ground |
- |
- |
|
I242-5 (RRI+) |
Sound signal (Rear Right) |
- |
- |
|
I242-20 (RRI-) |
Sound signal (Rear Right) |
- |
- |
|
I242-6 (RLI+) |
Sound signal (Rear Left) |
- |
- |
|
I242-21 (RLI-) |
Sound signal (Rear Left) |
- |
- |
|
I242-22 (ASG2) |
Shielded ground |
- |
- |
|
I242-19 (TMU1) |
Mute Signal |
- |
- |
|
I242-12 (FR+) - I242-30 (GND) |
Sound signal (Front Right) |
Active noise control system operating |
Pulse generation |
|
I242-27 (FR-) - I242-30 (GND) |
Sound signal (Front Right) |
Active noise control system operating |
Pulse generation |
|
I242-13 (FL+) - I242-30 (GND) |
Sound signal (Front Left) |
Active noise control system operating |
Pulse generation |
|
I242-28(FL-) - I242-30 (GND) |
Sound signal (Front Left) |
Active noise control system operating |
Pulse generation |
|
I242-10 (RR+) - I242-30 (GND) |
Sound signal (Rear Right) |
Active noise control system operating |
Pulse generation |
|
I242-25 (RR-) - I242-30 (GND) |
Sound signal (Rear Right) |
Active noise control system operating |
Pulse generation |
|
I242-11 (RL+) - I242-30 (GND) |
Sound signal (Rear Left) |
Active noise control system operating |
Pulse generation |
|
I242-26 (RL-) - I242-30 (GND) |
Sound signal (Rear Left) |
Active noise control system operating |
Pulse generation |
|
I242-1 (CANH) |
CAN communication signal |
- |
- |
|
I242-16 (CANL) |
CAN communication signal |
- |
- |
|
I243-1 (MC1+) - I242-30 (GND) |
Active noise control microphone input signal |
Active noise control microphone (FR) tapped with finger |
Pulse generation |
|
I243-5 (MC1-) - I242-30 (GND) |
Ground |
Always |
Below 1 Ω |
|
I243-2 (MC2+) - I242-30 (GND) |
Active noise control microphone input signal |
Active noise control microphone (RR) tapped with finger |
Pulse generation |
|
I243-6 (MC2-) - I242-30 (GND) |
Ground |
Always |
Below 1 Ω |
(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 |
I242-3 (NEI) - I242-30 (GND) |
|
Tool setting |
5 V/DIV., 20 ms./DIV. |
|
Vehicle condition |
Idling with warm engine |
|
|