Toyota CH-R Service Manual: 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 > Hood Lock Control Cable Assembly: Components
    COMPONENTS ILLUSTRATION *1 FRONT FENDER LINER LH *2 NO. 1 RADIATOR GRILLE RETAINER *3 NO. 1 RADIATOR TO SUPPORT SEAL - - ILLUSTRATION *A w/ Engine Hood Courtesy Switch ...

    Toyota CH-R Service Manual > Can Communication System: Check Bus 3 Line for Short to GND
    DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 6 (CA3H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 21 (CA3L) of the central gateway ECU (network gateway ECU) and ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2022 Copyright www.tochr.net
    0.0098