User Guide

2
FIGURE 2 - EC-17
™
ANTILOCK TRACTION CONTROLLER SYSTEM SCHEMATIC
TRACTION ENABLE SWITCH
ANTILOCK LAMP
RETARDER DISABLE SWITCH
BATTERY
ENGINE
ELECTRONIC
CONTROL MODULE
M-21
™
OR M-22
™
MODULATORS
QUICK
RELEASE
VALVE
SERVICE BRAKE
VALVE
EC-17
™
CONTROLLER
AT-1
™
OR AT-2
™
ANTILOCK TRACTION
ASSEMBLY
M-21
™
OR M-22
™
MODULATORS
TANDEM REAR AXLE
WHEEL SPEED
SENSOR EXCITER
WHEEL SPEED
SENSOR
EXCITER
REAR AXLE SERVICE &
SPRING BRAKES
DIAGNOSTIC
COMPUTER
TRACTION LAMP