User Guide

4
FIGURE 5 - EC-17
™
ANTILOCK TRACTION CONTROLLER SYSTEM WIRING SCHEMATIC
Note: M-21
™
and M-22
™
modulators
are shown in the diagrams in this document — newer model M-30
™
,
M-32
™
and or M-32QR
™
modulators
are used on many vehicles. Earlier modulators (M-21
™
, M-22
™
, or
M-30
™
) may be replaced by M-32
™
or M-32QR
™
modulators - except
for front axle use where there is not a quick release valve (e.g. a Bendix QR-1
™
quick release
valve) and then only M-32QR
™
modulators are permissible. We do not recommend replacing M-32
™
or
M-32QR
™
modulators with earlier
modulators.
Note: WS-20
™
wheel
speed sensors are shown in this document — newer model WS-24
™
wheel speed sensors are used on many vehicles. WS-24
™
wheel
speed sensors may be used to replace WS-20
™
wheel speed sensors. We do not recommend replacing WS-24
™
wheel
speed sensors with WS-20
™
wheel speed
sensors.