Kia 2004.5 Spectra Service Technical Training page 190

2004.5 Spectra Technology
WSS DTC Detecting Conditions
DTC failure conditions detected by the WSS include:
• When the wheel velocity is less than 5 MPH due to
an open or short in the wire
• Faulty wheel speed sensor
• Faulty HECU.
The WSS detects a "Speed Jump" condition by
monitoring when velocity of each wheel exceeds 1.25
MPH more than other wheels and counts the number
of wheel accelerations or decelerations within a
specific speed and time period. The ABSCM will
recognize the related fault.
The WSS is also used by the ABSCM to detect: a
condition for a damaged exciter due to improper
installation of wheel speed sensor, an open or short in
the wire, faulty wheel speed sensor, faulty rotor or
wheel bearing, or a faulty HECU.
When the ABSCM detects a condition for large air-gap
between the WSS and exciter, it may be due to
improper installation of the WSS.
WSS Inspection Procedures
1. Air gap between the WSS and the rotor is critical.
Brakes
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