DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination meter via CAN communication.
The combination meter has a built-in VSC warning buzzer:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (brake actuator assembly), perform the zero
point calibration (See page
).
PROCEDURE
1. |
CHECK CAN COMMUNICATION LINE |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Select CAN Bus Check from the System Selection Menu screen and follow the
prompts on the screen to inspect the CAN bus (See page
).
OK:
CAN Bus Check indicates no malfunctions in CAN communication.
NG | ![]() |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (BUZZER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
(e) According to the display on the tester, perform the Active Test.
ABS/VSC/TRAC
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Buzzer |
VSC warning buzzer |
Buzzer OFF/ON |
The buzzer can be heard |
(f) Check that the buzzer sounds or stops in accordance with the Techstream.
Result
Result |
Proceed to |
---|---|
Buzzer does not sound or stop |
A |
Buzzer sounds and stops |
B |
B | ![]() |
CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) |
|
3. |
REPLACE COMBINATION METER ASSEMBLY |
(a) Turn the ignition switch off.
(b) Replace the combination meter (See page
).
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (BUZZER) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.
(e) According to the display on the tester, perform the Active Test.
ABS/VSC/TRAC
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Buzzer |
VSC warning buzzer |
Buzzer OFF/ON |
The buzzer can be heard |
(f) Check that the buzzer sounds or stops in accordance with the Techstream.
Result
Result |
Proceed to |
---|---|
Buzzer does not sound or stop |
A |
Buzzer sounds and stops |
B |
A | ![]() |
REPLACE BRAKE ACTUATOR ASSEMBLY |
B | ![]() |
END |
Automatic Disconnecting Differential Motor Limit Switch Circuit (P17A4)
DESCRIPTION
When the A.D.D. actuator switches between 2WD and 4WD, the DL1 and DL2 terminals
of the limit switch and ADD terminal of the A.D.D. position switch change to one
of the following ON/OFF combinations listed in the table below.
Terminal
In 2WD
Switchi ...
System Diagram
SYSTEM DIAGRAM
Transmitting ECU (Transmitter)
Receiving ECU
Signals
Communication Method
ECM
Skid control ECU
Throttle position signal
Engine speed signal
Accelerator pedal position ...
Neutral Position Switch Circuit
DESCRIPTION
The ECM uses the neutral position switch installed to the manual transmission
assembly to detect when the transmission is in the neutral position.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHSTREAM (NEUTRAL SWITCH)
(a) Connect the Techstream ...