Troubleshooting guide

38
www.bendix.com 1-800-AIR-BRAKE (1-800-247-2725)
ABS: Straight Truck Sample Schematic
STRAIGHT TRUCK WITH STANDARD ABS SYSTEM SCHEMATIC (ABS COMPONENTS HIGHLIGHTED)
ABS/Traction Warning
Indicator Lamps
Diagnostic
Connection
Engine ECU
Brake
Chamber
Air Dryer
Supply
Reservoir
Anti-
Compound-
ing Spring
Brake
Relay Valve
Front Axle
Service
Reservoir
Rear Axle
Service
Reservoir
R-12DC
™
Relay Valve
Compressor
DC-4
™
Double
Check
Valve
Anti-Compound
Line
Gauge
SR-1
™
Spring
Brake Valve
Service Brake
Valve
Spring Brakes
Parking
Valve
ABS
ECU
Modulator
Low Pressure Warning Indicator
Single Check
Valve
Modulator
Wheel Speed
Sensor
Tone Ring
Quick
Release
Valve
Modulator
Spring Brakes
©2004 Bendix Commercial Vehicle Systems LLC • All Rights Reserved
Modulator
Wheel
Speed
Sensor
Tone
Ring
Tone Ring
Wheel
Speed
Sensor
Tone Ring