Toyota Corolla Cross: ABS does not Operate
DESCRIPTION
When the electronically controlled brake system is operating, as the input piston and output piston are not directly connected, the kickback of the brake pedal is minimal during ABS operation and the driver may not notice that ABS operated.
PROCEDURE
|
1. |
BRAKE PROBLEM CHECK |
(a) Check if the slip indicator light was illuminated or blinking when ABS did not operate.
HINT:
- When the VSC system is normal and ABS is operating, the slip indicator light blinks.
- When the VSC system is malfunctioning, the slip indicator light illuminates.
|
Result |
Proceed to |
|---|---|
|
The slip indicator light was blinking. |
A |
|
The slip indicator light was illuminated. |
B |
| A | .gif)
|
END |
|
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|
2. |
CHECK DTC AND FREEZE FRAME DATA |
(a) Using the GTS, check DTCs and Freeze Frame Data.
Chassis > Brake Booster > Trouble Codes Chassis > Brake/EPB > Trouble Codes|
Result |
Proceed to |
|---|---|
|
DTCs are not output. |
A |
|
DTCs are output. |
B |
| B |
|
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
|
3. |
PERFORM OPERATION CHECK DRIVING |
(a) Check that ABS operates using a drum tester or equivalent.
CAUTION:
When using a drum tester, enter Inspection Mode or VSC off mode and perform inspection with the TRAC and VSC systems disabled to prevent the vehicle from moving suddenly due to TRAC or VSC operation.
Click here .gif)
OK:
ABS operates.
| OK |
|
END |
| NG |
|
REPLACE BRAKE ACTUATOR ASSEMBLY |
READ NEXT:
ABS Operates Before Necessary When Braking
DESCRIPTION
Troubleshooting for when ABS operates too soon due to a noisy
signal from the speed sensor, a difference in output, etc.
PROCEDURE
1.
PERFORM DEALER MODE (SIGNA
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 malfunct
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 turns off TRAC operation, and pressing
SEE MORE:
How To Proceed With Troubleshooting
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
2.
CUSTOMER PROBLEM ANALYSIS
(a) Confirm problem symptoms
(1) Check the functions for which the problem symptoms occur. (
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE LIGHTING SYSTEM (EXT)
NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubleshooting a function, first make sure that the fu
