| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000026CP0 |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: PARKING BRAKE: ELECTRIC PARKING BRAKE SYSTEM (for HV Model): TERMINALS OF ECU; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] | ||
TERMINALS OF ECU
CHECK SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
|
*a |
Front view of wire harness connector (to Skid Control ECU (Brake Actuator Assembly)) |
- |
- |
(a) Disconnect the A51 skid control ECU (brake actuator assembly) connector.
(b) Measure the voltage and resistance according to the value (s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
A51-30 (+BS) - Body ground |
B - Body ground |
Parking brake motor power supply |
Always |
11 to 14 V |
|
A51-36 (IGR) - Body ground |
P - Body ground |
IG power supply |
Power switch on (IG) |
11 to 14 V |
|
A51-46 (GND1) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
A51-14 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
A51-2 (MRR+) - Body ground |
R - Body ground |
Parking brake motor RH (parking brake actuator assembly RH) (+) |
- |
- |
|
A51-3 (MRR-) - Body ground |
B - Body ground |
Parking brake motor RH (parking brake actuator assembly RH) (-) |
- |
- |
|
A51-13 (MRL+) - Body ground |
B - Body ground |
Parking brake motor LH (parking brake actuator assembly LH) (+) |
- |
- |
|
A51-12 (MRL-) - Body ground |
L - Body ground |
Parking brake motor LH (parking brake actuator assembly LH) (-) |
- |
- |
|
A51-44 (HZRI) - Body ground |
P - Body ground |
Electric parking brake switch indicator light |
- |
- |
|
A51-31 (SWI1) - Body ground |
V - Body ground |
Electric parking brake switch assembly |
- |
- |
|
A51-32 (SWO1) - Body ground |
Y - Body ground |
Electric parking brake switch assembly |
- |
- |
|
A51-15 (SWI2) - Body ground |
L - Body ground |
Electric parking brake switch assembly |
- |
- |
|
A51-16 (SWO2) - Body ground |
B - Body ground |
Electric parking brake switch assembly |
- |
- |
|
A51-5 (CANH) - Body ground |
R - Body ground |
CAN communication line H |
- |
- |
|
A51-19 (CANL) - Body ground |
W - Body ground |
CAN communication line L |
- |
- |
|
|