Toyota Corolla Cross: VSC does not Operate or VSC does not Operate Correctly
DESCRIPTION
When TRAC or VSC is operating, the skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred.
When a communication malfunction with the ECM is detected, TRAC and VSC are disabled. Also, TRAC and VSC are disabled when a DTC is stored.
When in VSC off mode, or TRAC and VSC are disabled, the multi-information display in the combination meter assembly displays "Traction Control Turned Off" and the VSC OFF indicator light illuminates to inform the driver.
PROCEDURE
|
1. |
BRAKE PROBLEM CHECK |
(a) Check whether the slip indicator light was illuminated when VSC did not operate.
OK:
The slip indicator light was illuminated.
HINT:
When a DTC is stored, the slip indicator light is illuminated and VSC does not operate due to the fail-safe function.
(b) Check whether the vehicle speed was 15 km/h (9 mph) or less when VSC did not operate.
OK:
The vehicle speed was 15 km/h (9 mph) or less.
HINT:
VSC does not operate when the vehicle speed is 15 km/h (9 mph) or less.
(c) Check whether the vehicle was driven straight for a few seconds at 15 km/h (9 mph) or more.
OK:
The vehicle was not driven straight for a few seconds at 15 km/h (9 mph) or more.
HINT:
When the ignition switch is turned to ON, as steering sensor zero point calibration is not performed below 15 km/h (9 mph), VSC will not operate until the vehicle is driven straight for a few seconds at 15 km/h (9 mph) or more.
| OK | .gif)
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END |
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2. |
CHECK DTC |
(a) Check the DTCs (electronically controlled brake system) that are output.
Chassis > Brake/EPB > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
Electronically controlled brake system DTCs are output |
B |
| B |
|
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
|
3. |
CHECK TIRES |
(a) Check that the tire of each wheel is the correct size.
Click here .gif)
OK:
The tire of each wheel is the correct size.
| NG |
|
REPLACE THE TIRE OF EACH WHEEL WITH THE CORRECT SIZE |
|
|
4. |
CHECK AIRBAG ECU ASSEMBLY INSTALLATION |
(a) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.
Click here
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) is tightened to the specified torque.
The yaw rate and acceleration sensor (airbag ECU assembly) is not installed in a tilted position.
| OK |
|
PERFORM OBTAIN ACCELERATION SENSOR ZERO POINT |
| NG |
|
INSTALL AIRBAG ECU ASSEMBLY CORRECTLY |
READ NEXT:
Brake Actuator Operation Sound is Loud during Initial Check
PROCEDURE
1.
PERFORM ROAD TEST
(a) After turning the ignition switch to ON, compare the operating
sound of the brake actuator the first time the vehicle speed reach
VSC OFF Switch Circuit
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected
to the combination meter assembly via CAN communication.
Pressing the VSC OFF switch (combination switch assembly) turns
o
SEE MORE:
Weight limits
The gross trailer weight must
never exceed 1500 lb. (680
kg).
The gross combination weight
must never exceed the following:
2WD models: 5790 lb. (2625 kg)
AWD models: 5955 lb. (2700 kg)
The gross vehicle weight
must never exceed the
GVWR indicated on the Certification
Label.
The
Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE
1. INSPECT FAN NO. 1 RELAY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified Condition
3 - 5 Auxiliary battery voltage not appl
