TERMINALS OF ECU
1. TERMINALS OF ECU
*1 |
Component without harness connected (Brake Actuator (Skid Control ECU)) |
Terminal No. (Symbol) |
Terminal Description |
---|---|
1 (GND2) |
Pump motor ground |
2 (+BM) |
Motor relay power supply |
3 (+BS) |
Solenoid relay power supply |
4 (GND1) |
Skid control ECU ground |
5 (FL-) |
Front wheel speed LH (-) signal input |
6 (RL+) |
Rear wheel speed LH (+) signal input |
8 (RR+) |
Rear wheel speed RH (+) signal input |
9 (FR+) |
Front wheel speed RH (+) signal input |
10 (FR-) |
Front wheel speed RH (-) signal input |
11 (D/G) |
Diagnosis tester communication line |
13 (STP2) |
Stop light control relay input |
14 (CANL) |
CAN communication line L |
16 (TS) |
Sensor check input |
17 (CSW) |
VSC OFF switch input |
20 (FSW+) |
Brake pedal load sensing switch input |
26 (FL+) |
Front wheel speed LH (+) signal input |
27 (RL-) |
Rear wheel speed LH (-) signal input |
28 (IG1) |
ECU power supply |
29 (RR-) |
Rear wheel speed RH (-) signal input |
30 (STP) |
Stop light switch input |
33 (SP1) |
Speed signal output for speedometer |
35 (CANH) |
CAN communication line H |
39 (STP0) |
Stop light control relay output |
2. TERMINAL INSPECTION
(a) Disconnect the connector and measure the voltage and resistance on the wire harness side.
*1 |
Front view of wire harness connector (to Brake Actuator (Skid Control ECU)) |
HINT:
Voltage cannot be measured with the connector connected to the skid control ECU because the connector is watertight.
Standard
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
A42-1 (GND2) - Body ground |
W-B - Body ground |
Pump motor ground |
Always |
Below 1 Ω |
A42-2 (+BM) - Body ground |
Y - Body ground |
Motor relay power supply |
Always |
11 to 14 V |
A42-3 (+BS) - Body ground |
GR - Body ground |
Solenoid relay power supply |
Always |
11 to 14 V |
A42-4 (GND1) - Body ground |
W - Body ground |
Skid control ECU ground |
Always |
Below 1 Ω |
A42-13 (STP2) - Body ground |
R - Body ground |
Stop light control relay input |
Stop light switch ON → OFF (Brake pedal depressed → released) |
8 to 14 V → Below 1.5 V |
A42-17 (CSW) - Body ground |
LG - Body ground |
VSC OFF switch input |
VSC OFF switch held ON → OFF (Not pressed) |
Below 1 Ω → 10 kΩ or higher |
A42-20 (FSW+) - Body ground |
R - Body ground |
Brake pedal load sensing switch input |
Brake pedal load sensing switch OFF → ON (Brake pedal depressed → released) |
950 to 1050 Ω → 203 to 223 Ω |
A42-28 (IG1) - Body ground |
GR - Body ground |
ECU power supply |
Ignition switch ON |
11 to 14 V |
A42-30 (STP) - Body ground |
P - Body ground |
Stop light switch input |
Stop light switch ON → OFF (Brake pedal depressed → released) |
8 to 14 V → Below 1.5 V |
A42-39 (STP0) - Body ground |
BR - Body ground |
Stop light control relay output |
Ignition switch ON |
11 to 14 V |
Registration
REGISTRATION
CAUTION / NOTICE / HINT
NOTICE:
When the automatic transaxle is replaced, the transaxle compensation
code must be input into the TCM (proceed to Procedure 1). After the automatic
transaxle is reinstalled, the Quick Response (QR) ...
Automatic door locking and unlocking systems
The following functions can be set or canceled:
- Setting and canceling the functions
► Setting and canceling the functions
Vehicles with TFT type multi-information display The function settings can be changed
using the multi-information dis ...
Vehicle Speed Signal Malfunction (C1541)
DESCRIPTION
The power steering ECU receives vehicle speed signals from the brake actuator
assembly (skid control ECU) via CAN communication. The ECU provides appropriate
assisting force in accordance with the vehicle speed, based on the signals.
...