- Ignition switch ON
- Intuitive parking assist system on
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000002D8A4 |
| Model Year Start: 2024 | Model: GR Corolla | Prod Date Range: [08/2023 - ] |
| Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: TERMINALS OF ECU; 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023 - ] | ||
TERMINALS OF ECU
CLEARANCE WARNING ECU ASSEMBLY
(a) Disconnect the I24 clearance warning ECU assembly connector.
(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
I24-1 (IG) - I24-31 (E) |
IG power source signal |
Ignition switch off |
Below 1 V |
|
Ignition switch ON |
11 to 14 V |
||
|
I24-31 (E) - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the I24 clearance warning ECU assembly connector.
(d) Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
I24-2 (BOF) - I24-31 (E) |
Power source for front sensor circuit |
Ignition switch off |
Below 1 V |
|
|
11 to 14 V |
||
|
I24-3 (E5) - I24-31 (E) |
Ground for front clearance sonar |
Always |
Below 1 Ω |
|
I24-4 (SOF) - I24-31 (E) |
Front sensor communication signal (Front clearance sonar sensor) |
|
Pulse generation (Refer to waveform 1) |
|
I24-19 (BOR) - I24-31 (E) |
Power source for rear sensor circuit |
Ignition switch off |
Below 1 V |
|
11 to 14 V |
||
|
I24-20 (E1) - I24-31 (E) |
Ground for rear clearance sonar |
Always |
Below 1 Ω |
|
I24-21 (SOR) - I24-31 (E) |
Rear sensor communication signal (Rear clearance sonar sensor) |
|
Pulse generation (Refer to waveform 2) |
(e) Using an oscilloscope, check waveform 1.
(1) Waveform 1 (Reference)
|
Item |
Content |
|---|---|
|
Measurement terminal |
I24-4 (SOF) - I24-31 (E) |
|
Measurement setting |
5 V/DIV., 100 μs./DIV. |
|
Condition |
|
(f) Using an oscilloscope, check waveform 2.
(1) Waveform 2 (Reference)
|
Item |
Content |
|---|---|
|
Measurement terminal |
I24-21 (SOR) - I24-31 (E) |
|
Measurement setting |
5 V/DIV., 100 μs./DIV. |
|
Condition |
|
|
|