Anti-Lock Brake System Terminals Of Ecu
Brake. Corolla. Zre142 Aze141
TERMINALS OF ECU
TERMINAL INSPECTION
Anti-Lock Brake System -- Terminals Of Ecu |
Terminal No. (Symbol)
| Terminal Description
|
1 (GND1)
| Skid control ECU ground
|
4 (RL-)
| Rear wheel speed LH (-) signal input
|
5 (RL+)
| Rear wheel speed LH (+) signal input
|
6 (FR-)
| Front wheel speed RH (-) signal input
|
7 (FR+)
| Front wheel speed RH (+) signal input
|
12 (+BS)
| Solenoid relay power supply
|
13 (GND2)
| Pump motor ground
|
14 (CANL)
| CAN communication line L
|
16 (RR-)
| Rear wheel speed RH (-) signal input
|
17 (RR+)
| Rear wheel speed RH (+) signal input
|
18 (FL-)
| Front wheel speed LH (-) signal input
|
19 (FL+)
| Front wheel speed LH (+) signal input
|
22 (SP1)
| Speed signal output for speedometer
|
24 (+BM)
| Motor relay power supply
|
25 (CANH)
| CAN communication line H
|
28 (STP)
| Stop light switch input
|
32 (TS)
| Sensor check input
|
34 (IG1)
| ECU power supply
|
Disconnect the connector and measure the voltage or resistance on the wire harness side.
- HINT:
- Voltage cannot be measured with the connector connected to the skid control ECU as the connector is watertight.
StandardTerminal No. (Symbol)
| Wiring Color
| Terminal Description
| Condition
| Specified Condition
|
A51-1 (GND1) - Body ground
| W-B - Body ground
| Skid control ECU ground
| Always
| Below 1 Ω
|
A51-12 (+BS) - Body ground
| W - Body ground
| Solenoid relay power supply
| Always
| 11 to 14 V
|
A51-13 (GND2) - Body ground
| W-B - Body ground
| Pump motor ground
| Always
| Below 1 Ω
|
A51-24 (+BM) - Body ground
| L - Body ground
| Motor relay power supply
| Always
| 11 to 14 V
|
A51-28 (STP) - Body ground
| L-W - Body ground
| Stop light switch input
| Stop light switch ON → OFF
(Brake pedal depressed → released)
| 8 to 14 V
→ Below 1.5 V
|
A51-34 (IG1) - Body ground
| L-B - Body ground
| ECU power supply
| Ignition switch ON
| 11 to 14 V
|
