TERMINALS OF ECU
*a |
Component without harness connected (Skid Control ECU [Brake Actuator Assembly]) |
- |
- |
Terminal No. (Symbol) |
Terminal Description |
---|---|
1 (GND2) |
Pump motor ground |
2 |
- (Not used) |
3 (EXI)*1 |
4WD detection switch (Transfer shift actuator assembly) input |
A.D.D. position switch (Differential motor actuator assembly) signal input |
|
4 |
- (Not used) |
5 (EXI4)*1 |
L4 detection switch (Transfer shift actuator assembly) input |
6 |
- (Not used) |
7 (STP2)*2 |
Stop light switch assembly input |
8 |
- (Not used) |
9 |
- (Not used) |
10 (CANL) |
CAN communication line L |
11 (EXI3) |
Back up light sw input |
12 (IG1) |
ECU power supply input |
13 (BM) |
Motor relay power supply |
14 (SP1) |
Speed signal output for speedometer |
15 (RR-) |
Rear wheel speed RH (-) signal input |
16 (RR+) |
Rear wheel speed RH (+) power supply output |
17 (FL-) |
Front wheel speed LH (-) signal input |
18 (FL+) |
Front wheel speed LH (+) power supply output |
19 |
- (Not used) |
20 |
- (Not used) |
21 |
- (Not used) |
22 (CANH) |
CAN communication line H |
23 |
- (Not used) |
24 (TS)*3 |
Sensor check input |
25 (GND1) |
Skid control ECU (Brake actuator assembly) ground |
26 (STPO)*2 |
STOP Relay output |
27 (HDCS) |
4WD identification signal input*1 |
28 (RL-) |
Rear wheel speed LH (-) signal input |
29 (RL+) |
Rear wheel speed LH (+) power supply output |
30 (FR-) |
Front wheel speed RH (-) signal input |
31 (FR+) |
Front wheel speed RH (+) power supply output |
32 |
- (Not used) |
33 (CSW) |
VSC OFF switch input |
34 |
- (Not used) |
35 (STP) |
STOP Relay input |
36 |
- (Not used) |
37 |
- (Not used) |
38 (+BS) |
Solenoid relay power supply |
1. TERMINAL INSPECTION
(a) Disconnect the connector and measure the voltage or resistance on the wire harness side.
*a |
Front view of wire harness connector (to Skid Control ECU [Brake Actuator Assembly]) |
- |
- |
HINT:
Voltage cannot be measured with the connector connected to the skid control (brake actuator assembly) as the connector is watertight.
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
---|---|---|---|---|
S1-1 (GND2) - Body ground |
W-B - Body ground |
Pump motor ground |
Always |
Below 1 Ω |
S1-3 (EXI) - Body ground*1 |
LG - Body ground |
4WD detection switch (Transfer shift actuator assembly) input |
|
11 to 14 V |
A.D.D. position switch (Differential motor actuator assembly) signal input |
|
11 to 14 V |
||
S1-5 (EXI4) - Body ground*1 |
GR - Body ground |
L4 detection switch (Transfer shift actuator assembly) input |
|
11 to 14 V |
S1-7 (STP2) - Body ground |
L - Body ground |
Stop light switch assembly input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
8 to 14 V → Below 1.5 V |
S1-12 (IG1) - Body ground |
G - Body ground |
ECU power supply input |
Ignition switch ON |
11 to 14 V |
S1-13 (BM) - Body ground |
B - Body ground |
Motor relay power supply |
Always |
11 to 14 V |
S1-14 (SP1) - Body ground |
G - Body ground |
Speed signal output for speedometer |
Ignition switch ON |
11 to 14 V |
S1-25 (GND1) - Body ground |
W-B - Body ground |
Skid control ECU (Brake actuator assembly) ground |
Always |
Below 1 Ω |
S1-26 (STPO) - Body ground |
B - Body ground |
STOP Relay output |
Ignition switch ON |
11 to 14 V |
S1-33 (CSW) - Body ground |
GR - Body ground |
VSC OFF switch input |
VSC OFF switch pressed and held → released |
Below 1 Ω → 10 kΩ or higher |
S1-35 (STP) - Body ground |
SB - Body ground |
STOP Relay input |
Stop light switch assembly on → off (Brake pedal depressed → released) |
8 to 14 V → Below 1.5 V |
S1-38 (+BS) - Body ground |
R - Body ground |
Solenoid relay power supply |
Always |
11 to 14 V |
Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular maintenance
is essential. It is the owner’s responsibility to perform regular checks. Toyota
recommends the following maintenance.
■ General maintenance
Should be performed on a daily basis. This can be done by yourself ...
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Automatic Transmission
-
-
*1
FRONT SPEED SENSOR LH
*2
FRONT SPEED SENSOR RH
*3
FRONT AXLE WITH ABS ROTOR BEARING ASSEMBLY LH
- FRONT SP ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedures for the RH side and LH side.
The procedures listed below are for the LH side.
When removing the moulding, heat the vehicle body and moulding using
a heat light.
Heating Temperature
Item
...