ANTI-LOCK BRAKE SYSTEM HYUNDAI
(Heavy Duty Truck)
- Characteristics
- ABS General
- Diagram of Input/Output
- System Layout
- Components Description
- Operational Principle
- Troubleshooting
- Schematic Diagram
Brake force coefficient μBas function of brake slip
Exercise
ABS Control Cycle
Exercise : Diagram of Input / Output
Air Over Hydraulic Brake-6×4 Dump Truck
Full Air Brake - 6×4 Tractor
Location
Pressure Control Valve for Front (A.O.H)
Pressure Control Valve for Rear brake
Wheel speed sensor -Front Wheel speed sensor -Rear
ABS Control Module
The ECM is the brain of the ABS system.
It receives information from the sensors and sends signals to the ABS valves.
ECM is installed at the underneath the seat of the passenger side.
Components Description
7 Main power supply
8 Main power supply
9 Main power supply
10 Ground
11 Ground
12 Ground
13 Self diagnosis “K”terminal
14 Self diagnosis “L”terminal
16 ASR Warning lamp
17 DBR Relay
18 ABS Warning
1 FRT/LH Pressure modulator valve outlet
2 FRT/LH Pressure modulator valve inlet
3 FRT/LH Pressure modulator ground
4 FRT/LH Wheel speed sensor
5 FRT/LH Wheel speed sensor
4 FRT/RH Wheel speed sensor
5 FRT/RH Wheel speed sensor
7 FRT/RH Pressure modulator valve outlet
8 FRT/RH Pressure modulator valve inlet
9 FRT/RH Pressure modulator valve ground
1 RR/LH Pressure modulator valve outlet
2 RR/LH Pressure modulator valve inlet
3 RR/LH Pressure modulator valve ground
4 ASR Ground
5 RR/LH Wheel speed sensor
6 RR/LH Wheel speed sensor
7 ASR Power supply
8 RR/RH Wheel speed sensor
9 RR/RH Wheel speed sensor
10 RR/RH Pressure modulator valve outlet
11 RR/RH Pressure modulator valve inlet
12 RR/RH Pressure modulator valve ground
Wheel Speed Sensor
Minimum output voltage : 0.75 V
Exercise : WSS: service advice
When servicing wheel speed sensor , Discuss your service points in the group and make a note at the point as the shown in the figure.
Wheel Speed Sensor - Output Signal (Normal)
Wheel Speed Sensor - Output Signal (Abnormal)
Wheel Speed Sensor - Output Signal (abnormal)
WSS : service advice
•The single WSS (removed from the vehicle) can simply be tested with a multi-meter by a resistance (Ohm) measurement
Pressure Control Valve
Продолжение в