TERMINALS OF ECU
1. TERMINALS OF ECU
Text in Illustration
*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.
Text in Illustration
*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 |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful bec ...
Control Module Performance (P0607)
MONITOR DESCRIPTION
The ECM continuously monitors its internal processors (CPUs) and heated oxygen
sensor transistors. This self-check ensures that the ECM is functioning properly.
DTC No.
DTC Detection Condition
Trouble Ar ...
Cruise Control Input Circuit (P0575)
DESCRIPTION
This DTC indicates the internal abnormalities of the ECM.
DTC
DTC Detection Condition
Trouble Area
P0575
When both of the following conditions are met:
STP signals input t ...