Toyota CH-R Service Manual: ABS Operates Before Necessary When Braking

Toyota CH-R Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / 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 TEST MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CIRCUIT)

(a) Using the Techstream, perform a Test Mode (Signal Check) inspection sensor check and check that speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete.

Click here

Chassis > ABS/VSC/TRAC/EPB > Utility

Tester Display

Signal Check

OK:

Speed sensor Test Mode (Signal Check) inspection items change from incomplete to complete.

 

Proceed to

OK (for Front)

A

OK (for Rear)

B

NG

C

NOTICE:

  • When cleaning the front speed sensor, make sure to clean the installation hole before installation.
  • Do not use parts cleaner when cleaning the front speed sensor rotor.

HINT:

The rear speed sensor and rear speed sensor rotor are incorporated into the rear axle hub and bearing assembly.

If the rear speed sensor and rear speed sensor rotor need to be replaced, replace the rear axle hub and bearing assembly.

A

CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR
B

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY

C

INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT
    ABS does not Operate
    DESCRIPTION When the vehicle stability control system is operating, as the input piston and output piston are not directly connected, the kickback of the brake pedal is minimal during ABS operati ...

    VSC does not Operate or VSC does not Operate Correctly
    DESCRIPTION When ABS, 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 mal ...

    Other materials:

    Toyota CH-R Service Manual > Airbag System: Manual Cut off Switch Trouble (B1651/33)
    DESCRIPTION The airbag cut off switch circuit consists of the airbag sensor assembly and airbag cut off switch cylinder sub-assembly. The instrument panel passenger without door airbag assembly can be optionally deactivated via this circuit by turning the airbag cut off switch cylinder sub-ass ...

    Toyota CH-R Service Manual > Vehicle Stability Control System: Steering Angle Sensor Internal Circuit (C1433)
    DESCRIPTION This DTC is stored when the skid control ECU (brake actuator assembly) receives an internal malfunction signal from the steering angle sensor. DTC No. Detection Item DTC Detection Condition Trouble Area C1433 Ste ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0104