ABS Operates Before Necessary When Braking [12/2019 - ]: Procedure

1. 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.

   Refer to TEST MODE PROCEDURE [12/2019 - 11/2023] , or refer to TEST MODE PROCEDURE [11/2023 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Signal Check

   OK

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

   Result

   Result	Proceed to
   OK (for Front)	A
   OK (for Rear (for 2WD))	B
   OK (for Rear (for AWD))	C
   NG	D

   NOTE:

   • When cleaning the front speed sensor and rear skid control sensor (for AWD), 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 (for AWD).

   HINT: 

   The rear speed sensor and rear speed sensor rotor are incorporated into the rear axle hub and bearing assembly. (for 2WD)

   If the rear speed sensor and rear speed sensor rotor need to be replaced, replace the rear axle hub and bearing assembly. (for 2WD)

Result: 

A 

CLEAN FRONT SPEED SENSOR AND FRONT SPEED SENSOR ROTOR 

Result: 

B 

REPLACE REAR AXLE HUB AND BEARING ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Result: 

C 

CLEAN REAR SKID CONTROL SENSOR AND REAR SPEED SENSOR ROTOR 

Result: 

D 

INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT