Toyota Corolla Cross: 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 (SIGNAL CHECK) INSPECTION (SPEED
SENSOR CHECK)
|
(a) Using the GTS, perform a Dealer Mode (Signal Check) inspection
sensor check and check that speed sensor Dealer Mode (Signal Check) inspection items
change from incomplete to complete.
Click here
Chassis > Brake/EPB > Utility
Tester Display
|
Signal Check
|
NOTICE:
- When cleaning the front speed sensor and rear sped sensor, make sure
to clean the installation hole before installation.
- Do not use parts cleaner when cleaning the front speed sensor rotor
and rear speed sensor rotor.
OK:
Speed sensor Dealer Mode (Signal Check) inspection items change
from incomplete to complete.
Result
|
Proceed to
|
OK (for Front)
|
A
|
OK (for Rear)
|
B
|
NG
|
C
|
A |
|
CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR
|
B |
|
CLEAN REAR SPEED SENSOR AND REAR SPEED SENSOR ROTOR
|
C |
|
INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT
|
READ NEXT:
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
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:
DESCRIPTION
The transmission revolution sensor (NSS) detects the secondary pulley speed and
sends it to the TCM.
The TCM determines the current gear ratio from the transmission revolution sensor
(NSS) signal.
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