Vehicle Stability Control System (For Hydraulic Brake Booster) Terminals Of Ecu
TERMINALS OF ECU
TERMINAL INSPECTION
Vehicle Stability Control System (For Hydraulic Brake Booster) -- Terminals Of Ecu |
Text in Illustration*a
| Component without harness connected
(Skid Control ECU)
| -
| -
|
Terminal No. (Symbol)
| Terminal Description
|
A7-1 (GND1)
| Skid control ECU ground
|
A7-2 (+BM1)
| Power supply for motor
|
A7-3 (FR+)
| Front speed sensor RH power supply output
|
A7-4 (FL-)
| Front speed sensor LH input
|
A7-5 (RR+)
| Rear speed sensor RH power supply output
|
A7-6 (RL-)
| Rear speed sensor LH input
|
A7-7 (STP)
| Stop light switch
|
A7-9 (CSW)
| VSC OFF switch
|
A7-11 (CANH)
| CAN communication terminal high
|
A7-12 (SP1)
| Speedometer signal
|
A7-16 (STPO)
| Stop light operation relay
|
A7-17 (FR-)
| Front speed sensor RH input
|
A7-18 (FL+)
| Front speed sensor LH power supply output
|
A7-19 (RR-)
| Rear speed sensor RH input
|
A7-20 (RL+)
| Rear speed sensor LH power supply output
|
A7-24 (TS)
| Sensor test terminal (Signal check switch)
|
A7-25 (CANL)
| CAN communication terminal low
|
A7-27 (EXI)
| Center differential lock detection switch
|
A7-28 (HZRI)
| Hazard warning switch
|
A7-30 (BZ)*1
| Skid control buzzer
|
A7-31 (+BS)
| Power supply for solenoid
|
A7-32 (GND2)
| Skid control ECU ground
|
A7-40 (EXI3)
| w/ Rear Differential Lock: Rear differential lock detection switch
w/o Rear Differential Lock: Four wheel drive control ECU
|
A7-41 (LBL)
| Brake fluid level warning switch
|
A7-42 (EXO)
| Stop light control relay (Emergency brake signal output)
|
A7-44 (HDCS)*2
| Downhill assist control switch
|
A7-45 (STP2)
| Stop light switch
|
A7-46 (IG1)
| IG1 power supply
|
A8-1 (IG2)
| IG2 power supply
|
A8-2 (+BM2)
| Power supply for motor
|
A8-4 (GND3)
| Skid control ECU ground
|
- *1: w/ Dynamic Radar Cruise Control System
- *2: w/ Downhill Assist Control
Disconnect the 2 skid control ECU connectors 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.
Text in Illustration*a
| Front view of wire harness connector
(to Skid Control ECU)
| -
| -
|
Terminal No. (Symbol)
| Wiring Color
| Terminal Description
| Condition
| Specified Condition
|
A7-2 (+BM1) - Body ground
| B
| Power supply for motor
(from battery)
| Always
| 11 to 14 V
|
A7-7 (STP) - Body ground
| V
| Stop light switch
| Brake pedal depressed → released
| 8 to 14 V → Below 1.5 V
|
A7-9 (CSW) - Body ground
| B
| VSC OFF switch input
| VSC OFF switch off → on and held
| 10 kΩ or higher → Below 1 Ω
|
A7-16 (STPO) - Body ground
| LG
| Stop light operation relay
| Ignition switch off → ON
| Below 1.1 V → 11 to 14 V
|
A7-31 (+BS) - Body ground
| L-R
| Power supply for solenoid
(from battery)
| Always
| 11 to 14 V
|
A7-41 (LBL) - Body ground
| V-G
| Brake fluid level warning switch
| Brake fluid level +/-5 mm (+/-0.196 in.) from minimum level → maximum level
| Below 1 Ω → 1.9 to 2.1 kΩ
|
A7-44 (HDCS)* - Body ground
| W-L
| Downhill assist control switch input
| Downhill assist control switch off → on
| 10 kΩ or higher → Below 1 Ω
|
A7-45 (STP2) - Body ground
| L
| Stop light switch
| Brake pedal depressed → released
| 8 to 14 V → Below 1.5 V
|
A7-46 (IG1) - Body ground
| G
| IG1 power supply
| Ignition switch off → ON
| Below 1 V → 11 to 14 V
|
A8-1 (IG2) - Body ground
| W
| IG2 power supply
| Ignition switch off → ON
| Below 1 V → 11 to 14 V
|
A8-2 (+BM2) - Body ground
| B
| Power supply for motor
(from battery)
| Always
| 11 to 14 V
|
A7-1 (GND1) - Body ground
| W-B
| Ground
| Always
| Below 1 Ω
|
A7-32 (GND2) - Body ground
| W-B
| Ground
| Always
| Below 1 Ω
|
A8-4 (GND3) - Body ground
| W-B
| Ground
| Always
| Below 1 Ω
|
- *: w/ Downhill Assist Control
