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 .gif)
|
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 | .gif)
|
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:
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:
Freeze Frame Data
FREEZE FRAME DATA
FREEZE FRAME DATA
HINT:
When a DTC is stored, the freeze frame data stores the current vehicle
(sensor) state.
The freeze frame data cannot be cleared or updated until the recorded
DTCs are cleared.
(a) Using the GTS, the state of the vehicle (sensors) when the
Terminals Of Ecm
TERMINALS OF ECM
HINT: The standard voltage, resistance and waveform between each pair of the ECM terminals are shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resist
