2502869C94 | Genuine International® Electronic Hydraulic ABS Control Module Kelsey Hayes

- RE 300 Integrated School Bus
- 3000 Integrated Bus
- 4900 Medium Truck
- FE 300 Integrated Commercial Bus
- 3800 School Bus Chassis
- 30RE Amtran RE Bus
- 4700 Medium Truck
- 30FE IC Bus FE Series
- FE 300 Integrated School Bus
- 1652 Stripped Chassis
- 3000 Bus Chassis

1. Prevent Wheel Lock-Up

• During hard braking, wheels can lock, causing loss of control.
• The module modulates hydraulic brake pressure to keep wheels rotating, maintaining steering control.

2. Improve Vehicle Stability

• Works with Electronic Stability Control (ESC) and Traction Control systems.
• Adjusts braking pressure on individual wheels to prevent skidding or rollover.

3. Optimize Braking Performance

• Ensures shorter stopping distances by balancing brake pressure between wheels.
• Reduces tire wear and improves braking efficiency.

4. Coordinate with Vehicle Systems

• Communicates with the engine ECU and other modules.
• Adjusts braking for adaptive cruise control, hill-start assist, or brake assist features.

5. Safety Compliance

• Meets modern vehicle safety regulations by integrating ABS and stability functions.
• Essential for heavy trucks and buses to safely handle heavy loads under emergency braking.

1. ABS Warning Light

• The ABS light on the dashboard stays on or flashes
• Indicates the module has detected a fault in the system

2. Brake Warning Lights

• Other lights, such as Brake System Warning or ESC warning, may illuminate
• Sometimes appears along with the ABS light

3. Brakes Lock or Pulsate Abnormally

• Wheel lock-up during braking, especially on slippery surfaces
• Brake pedal may pulse, feel soft, or hard unexpectedly

4. Loss of ABS Function

• ABS stops working entirely
• Traction control or stability control may also be disabled

5. Erratic Brake Behavior

• Uneven braking or sudden modulation when braking normally
• Engine may derate in some vehicles with integrated safety systems

6. Fault Codes on Diagnostics

• Diagnostic tools may show:
  • Communication errors with ABS module
  • Fault codes related to hydraulic solenoids or wheel speed sensors
  • Example codes: C1201, C1234 (depending on manufacturer)

7. Vehicle Pulls or Skews While Braking

• Module may mismanage brake pressure between wheels
• Car or truck pulls to one side during braking