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 |
Front Radar Sensor Region Code Mismatch (C1A0A)
DESCRIPTION
The forward recognition camera receives necessary information from the millimeter
wave radar sensor assembly.
When the forward recognition camera judges that a millimeter wave radar sensor
assembly which is not compatible with the vehicle has been installed, DTC C1A0A
is stored.
...
Power Source Mode does not Change to ON (IG and ACC)
DESCRIPTION
If any of the following operations are performed, the certification ECU (smart
key ECU assembly) receives a signal, and changes the power source mode.
With the electrical key transmitter sub-assembly in the cabin, the engine
switch is pressed.
When the battery of the e ...
Glossary Of Sae And Toyota Terms
GLOSSARY OF SAE AND TOYOTA TERMS
This glossary lists all SAE-J1930 terms and abbreviations used in this manual
in compliance with SAE recommendations, as well as their TOYOTA equivalents.
SAE ABBREVIATIONS
SAE TERMS
TOYOTA TERMS ( )-ABBREVIATIONS
...