What is the purpose and function of the Anti-lock Brake System (ABS),ABS Control Module and Speed Sensor on Toyota Sienna?

The Anti-lock Brake System (ABS) is designed to maintain vehicle steerability, directional stability, and optimum deceleration under severe braking conditions and on most road surfaces by monitoring the rotational speed of each wheel and controlling brake line pressure to prevent wheel lock-up. It works in conjunction with Automatic Skid Control and tire pressure warning systems, where the former helps control skids by braking outside wheels during oversteering, and the latter alerts the driver to low tire pressure through a dashboard light. The actuator assembly includes the master cylinder, an electric hydraulic pump, and four solenoid valves that modulate brake line pressure during ABS operation. Speed sensors located at each wheel generate electrical pulsations to indicate wheel rotational speed, with front sensors mounted to the steering knuckle and rear sensors bolted to the axle carriers. The ABS computer, housed within the actuator, processes information from the wheel speed sensors to control hydraulic line pressure and monitors the system for faults, illuminating an "ABS" light on the dashboard if a problem arises. The built-in self-diagnosis system detects sensor malfunctions and stores failure codes, which can be accessed by turning the ignition key off and using jumper wires on the data link connectors. The ABS warning light indicates diagnostic codes through a series of flashes, with specific patterns corresponding to different malfunctions. After diagnosis, trouble codes can be cleared by jumping terminals on the data link connector and pressing the brake pedal multiple times, after which the system or component should be checked or serviced as needed.

Genuine Toyota Sienna ABS Control Module

Anti Lock Brake Control Module

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

45 ABS Control Modules found

View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08061
$1053.71 MSRP: $1332.29
You Save: $278.58 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Hydraulic Unit
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2005-2007 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08150
$1083.66 MSRP: $1370.15
You Save: $286.49 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Hydraulic Unit
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2009 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08221
$977.55 MSRP: $1236.00
You Save: $258.45 (21%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2015 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL33L-SBTDKA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA
View related parts
Toyota Sienna Computer, Skid Control
Part Number: 89541-08020
$2631.43 MSRP: $3873.46
You Save: $1242.03 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Module
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000-2003 Toyota Sienna | CE, LE | 6 Cyl 3.0L | 1MZFE; MCL10L-GFSDKA, MCL10L-GFSDKK, MCL10L-GFSGKA, MCL10L-GFSGKK, MCL10L-PFSDKA, MCL10L-PFSDKK, MCL10L-PFSGKA, MCL10L-PFSGKK, MCL10L-SESDKA, MCL10L-SESDKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08200
$1062.75 MSRP: $1343.72
You Save: $280.97 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2012 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL33L-SBTDKA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08160
$965.01 MSRP: $1220.13
You Save: $255.12 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hydraulic Unit
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2009 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08170
$1052.81 MSRP: $1331.14
You Save: $278.33 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hydraulic Unit
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2009 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
View related parts
Toyota Sienna ACTUATOR ASSY, BRAKE
Part Number: 44050-08330
$931.45 MSRP: $1177.70
You Save: $246.25 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ABS Control Unit, Modulator Valve
- Manufacturer Note: (L),*614
- Replaces: 44050-45010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2021-2024 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
View related parts
Toyota Sienna ACTUATOR ASSY, BRAKE
Part Number: 44050-08350
$832.97 MSRP: $1053.18
You Save: $220.21 (21%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Manufacturer Note: *614
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2022-2024 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08290
$968.40 MSRP: $1224.42
You Save: $256.02 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2017-2020 Toyota Sienna | LE, SE, STD, XLE | 6 Cyl 3.5L | 2GRFE, 2GRFKS; GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA, GSL35L-PFZSHA
View related parts
Toyota Sienna ACTUATOR ASSY, BRAKE
Part Number: 44050-08352
$851.78 MSRP: $1076.97
You Save: $225.19 (21%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: ABS Control Unit, Modulator Valve
- Manufacturer Note: *614
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2023-2024 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08151
$1077.10 MSRP: $1361.86
You Save: $284.76 (21%)
ADD TO CART
Product Specifications
- Other Name: Actuator, Hydraulic Unit
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2010 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.5L | 2GRFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-45010
$931.45 MSRP: $1177.70
You Save: $246.25 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: ABS Control Unit, Modulator Valve
- Replaced by: 44050-08330
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2021-2023 Toyota Sienna | 4 Cyl 2.5L | A25AFXS; AXLH40L-PNXLHA, AXLH40L-PNXSHA, AXLH40L-PNXXHA, AXLH40L-PPXEHA, AXLH40L-PPXXHA, AXLH45L-PNXLHA, AXLH45L-PNXSHA, AXLH45L-PNXXHA, AXLH45L-PPXEHA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08260
$961.39 MSRP: $1215.57
You Save: $254.18 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2018 Toyota Sienna | LE, SE, STD, XLE | 6 Cyl 3.5L | 2GRFE, 2GRFKS; GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA, GSL35L-PFZSHA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08190
$1025.35 MSRP: $1296.43
You Save: $271.08 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Modulator Valve
- Manufacturer Note: CRUISE CONTROL-WITH(MILLIMETER WAVE RADAR CRUISE)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2012 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL33L-SBTDKA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08092
$1602.23 MSRP: $2025.82
You Save: $423.59 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Hydraulic Unit
- Manufacturer Note: CRUISE CONTROL-RADAR CRUISE CONTROL
- Replaces: 44050-08091
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2007 Toyota Sienna | CE, LE, XLE | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSL20L-PFADKK, GSL20L-PFAEKA, GSL20L-PFAEKK, GSL20L-PFAQKA, GSL20L-PFAQKK, GSL20L-PRADKK, GSL20L-PRAEKA, GSL20L-PRAEKK, GSL20L-PRAQKA, GSL20L-PRAQKK, GSL23L-SBADKA, GSL23L-SBADKK, GSL25L-PFADKK, GSL25L-PFAEKA, GSL25L-PFAEKK, GSL25L-PFAQKA, GSL25L-PFAQKK, MCL20L-PFADKK, MCL20L-PFAEKA, MCL20L-PFAEKK, MCL20L-PFAQKA, MCL20L-PFAQKK, MCL20L-PRADKK, MCL20L-PRAEKA, MCL20L-PRAEKK, MCL20L-PRAQKA, MCL20L-PRAQKK, MCL23L-SBADKA, MCL23L-SBADKK, MCL25L-PFADKK, MCL25L-PFAEKA, MCL25L-PFAEKK, MCL25L-PFAQKA, MCL25L-PFAQKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08250
$946.48 MSRP: $1196.70
You Save: $250.22 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Sienna | LE, SE, STD, XLE | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS; ASL30L-PFTEKA, ASL30L-PRTEKA, GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTDKA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08270
$895.17 MSRP: $1131.84
You Save: $236.67 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Modulator Valve
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2018 Toyota Sienna | LE, SE, STD, XLE | 6 Cyl 3.5L | 2GRFE, 2GRFKS; GSL30L-PFTDKA, GSL30L-PFTEKA, GSL30L-PFTQKA, GSL30L-PFZDHA, GSL30L-PFZEHA, GSL30L-PFZQHA, GSL30L-PRTEKA, GSL30L-PRTQKA, GSL30L-PRTSKA, GSL30L-PRZEHA, GSL30L-PRZQHA, GSL30L-PRZSHA, GSL33L-SBTDKA, GSL33L-SBZDHA, GSL33L-SEZDHA, GSL35L-PFTEKA, GSL35L-PFTQKA, GSL35L-PFZEHA, GSL35L-PFZQHA, GSL35L-PFZSHA
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08020
Product Specifications
- Other Name: Actuator, Motor Pump
- Manufacturer Note: W(VSC)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000-2003 Toyota Sienna | CE, LE | 6 Cyl 3.0L | 1MZFE; MCL10L-GFSDKA, MCL10L-GFSDKK, MCL10L-GFSGKA, MCL10L-GFSGKK, MCL10L-PFSDKA, MCL10L-PFSDKK, MCL10L-PFSGKA, MCL10L-PFSGKK, MCL10L-SESDKA, MCL10L-SESDKK
View related parts
Toyota Sienna ACTUATOR Assembly, Brake
Part Number: 44050-08050
Product Specifications
- Other Name: Actuator, Motor Pump
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2003 Toyota Sienna | CE, LE | 6 Cyl 3.0L | 1MZFE; MCL10L-GFSDKA, MCL10L-GFSDKK, MCL10L-GFSGKA, MCL10L-GFSGKK, MCL10L-PFSDKA, MCL10L-PFSDKK, MCL10L-PFSGKA, MCL10L-PFSGKK, MCL10L-SESDKA, MCL10L-SESDKK

| Page 1 of 3 |Next >

1-20 of 45 Results

Toyota Sienna ABS Control Module

If you are in demand for superior quality and affordable OEM Toyota Sienna ABS Control Module, then shop with us! We own a wide range of the reduced-priced genuine Toyota Sienna ABS Control Module. You can purchase in confidence as all parts come with a manufacturer's warranty. Any issues with our products? No need to worry as we have a hassle-free return policy to guide you every step of the way.

Toyota Sienna ABS Control Module Parts Questions & Experts Answers

ACTUATOR Assembly, Brake
44050-08020
Q: What is the purpose and function of the Anti-lock Brake System (ABS),ABS Control Module and Speed Sensor on Toyota Sienna?
A:
The Anti-lock Brake System (ABS) is designed to maintain vehicle steerability, directional stability, and optimum deceleration under severe braking conditions and on most road surfaces by monitoring the rotational speed of each wheel and controlling brake line pressure to prevent wheel lock-up. It works in conjunction with Automatic Skid Control and tire pressure warning systems, where the former helps control skids by braking outside wheels during oversteering, and the latter alerts the driver to low tire pressure through a dashboard light. The actuator assembly includes the master cylinder, an electric hydraulic pump, and four solenoid valves that modulate brake line pressure during ABS operation. Speed sensors located at each wheel generate electrical pulsations to indicate wheel rotational speed, with front sensors mounted to the steering knuckle and rear sensors bolted to the axle carriers. The ABS computer, housed within the actuator, processes information from the wheel speed sensors to control hydraulic line pressure and monitors the system for faults, illuminating an "ABS" light on the dashboard if a problem arises. The built-in self-diagnosis system detects sensor malfunctions and stores failure codes, which can be accessed by turning the ignition key off and using jumper wires on the data link connectors. The ABS warning light indicates diagnostic codes through a series of flashes, with specific patterns corresponding to different malfunctions. After diagnosis, trouble codes can be cleared by jumping terminals on the data link connector and pressing the brake pedal multiple times, after which the system or component should be checked or serviced as needed.