Toyota Tacoma (2015-2018) Service Manual: Terminals Of Ecu
TERMINALS OF ECU
Text in Illustration
|
*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: for 4WD
- *2: w/ Trailer Towing
- *3: w/o Toyota Safety Sense P
1. TERMINAL INSPECTION
(a) Disconnect the connector and measure the voltage or resistance on the wire harness side.
Text in Illustration
|
*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 |
- *1: for 4WD
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
When troubleshooting a vehicle with the diagnosis system, the only difference
from the usual troubleshooting procedure is connecting the Techstream to the vehicle
...
Dtc Check / Clear
DTC CHECK / CLEAR
1. DTC CHECK/CLEAR (When Using Techstream)
(a) Check the DTC.
(1) Turn the ignition switch off.
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON.
(4) ...
Other materials:
Room Temperature Sensor Circuit (B1411/11)
DESCRIPTION
The cooler thermistor (room temperature sensor) is installed in the instrument
panel to detect the cabin temperature which is used to control the air conditioning
system AUTO mode. The resistance of the cooler thermistor (room temperature sensor)
changes in accordance with the cab ...
Sliding Roof Switch Assembly
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL SLIDING ROOF SWITCH ASSEMBLY (ROOF CONSOLE BOX ASSEMBLY)
(a) Connect the connector.
(b) Engage the 4 clips to install the sliding roof switch assembly (roof console
box assembly).
Removal
REMOVAL
P ...
Diagnosis System
DIAGNOSIS SYSTEM
DIAGNOSIS FUNCTION
(a) The diagnosis function turns off the cruise control indicator, illuminates
the master warning light and displays a warning message when a malfunction is detected.
When a malfunction is detected in the dynamic radar cruise control system, DTCs
are store ...
