Vehicle Stability Control System (For Vacuum Brake Booster) Terminals Of Ecu
TERMINALS OF ECU
TERMINAL INSPECTION
Vehicle Stability Control System (For Vacuum Brake Booster) -- Terminals Of Ecu |
Text in Illustration*a
| Component without harness connected
(Skid Control ECU [Brake Actuator Assembly])
|
Terminal No. (Symbol)
| Terminal Description
|
1 (GND1)
| Skid control ECU ground
|
2 (STP)
| Stop light switch input
|
4 (RL-)
| Rear wheel speed LH (-) signal input
|
5 (RL+)
| Rear wheel speed LH (+) power supply output
|
6 (FR-)
| Front wheel speed RH (-) signal input
|
7 (FR+)
| Front wheel speed RH (+) power supply output
|
8 (EXO)
| Stop light control ECU output
|
9 (EXI4)
| Center differential lock detection switch input
|
11 (SP1)
| Speed signal output for speedometer
|
12 (+BS)
| Solenoid relay power supply
|
13 (GND2)
| Pump motor ground
|
14 (CANL)
| CAN communication line low
|
16 (RR-)
| Rear wheel speed RH (-) signal input
|
17 (RR+)
| Rear wheel speed RH (+) power supply output
|
18 (FL-)
| Front wheel speed LH (-) signal input
|
19 (FL+)
| Front wheel speed LH (+) power supply output
|
22 (STP2)
| Stop light control ECU input
|
24 (BM)
| Motor relay power supply
|
25 (CANH)
| CAN communication line high
|
27 (FSW+)
| Brake pedal load sensing switch input
|
29 (HZRI)
| Hazard warning switch input
|
30 (CSW)
| VSC OFF switch input
|
33 (TS)
| Sensor check input
|
34 (IG1)
| ECU power supply
|
Text in Illustration*a
| Front view of wire harness connector
(to Skid Control ECU [Brake Actuator Assembly])
|
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 (brake actuator assembly) as the connector is watertight.
Disconnect the skid control ECU (brake actuator assembly) connector.
Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol)
| Wiring Color
| Terminal Description
| Condition
| Specified Condition
|
A6-1 (GND1) - Body ground
| W-B - Body ground
| Skid control ECU ground
| Always
| Below 1 Ω
|
A6-2 (STP) - Body ground
| V - Body ground
| Stop light switch input
| Brake pedal depressed → released
| 8 to 14 V → Below 1.5 V
|
A6-12 (+BS) - Body ground
| L-R - Body ground
| Solenoid relay power supply
| Always
| 11 to 14 V
|
A6-13 (GND2) - Body ground
| W-B - Body ground
| Pump motor ground
| Always
| Below 1 Ω
|
A6-22 (STP2) - Body ground
| L - Body ground
| Stop light control ECU input
| Brake pedal depressed → released
| 8 to 14 V → Below 1.5 V
|
A6-24 (BM) - Body ground
| B - Body ground
| Motor relay power supply
| Always
| 11 to 14 V
|
A6-25 (CANH) - A6-14 (CANL)
| B - W
| CAN bus
| Ignition switch off
| 54 to 69 Ω
|
A6-27 (FSW+) - Body ground
| V-G - Body ground
| Brake pedal load sensing switch input
| Brake pedal depressed → released
| 950 to 1050 Ω → 203 to 223 Ω
|
A6-30 (CSW) - Body ground
| B - Body ground
| VSC OFF switch input
| VSC OFF switch held on → off (Not pressed)
| Below 1 Ω → 10 kΩ or higher
|
A6-34 (IG1) - Body ground
| G - Body ground
| ECU power supply
| Ignition switch ON
| 11 to 14 V
|
