WABCO iABS 2S/1M Standard Maintenance Manual page 62

Diagnostics
Suspect
Blink
SPN FMI Component
Code
and Location
6 6 13 Wheel
Speed
Sensor F
6 6 14 Wheel
Speed
Sensor F
62
Fault
ITP
Description
Function
(FMI)
N/A Wheel
Speed
Oscillating
N/A Special
Instructions
Cause Repair Information
Tone ring signal - Check for loose wheel
irregular. bearings or excessive hub
runout.
- Check sensor wiring and
connectors for intermittent
contact.
- Check mounting of tone ring
and condition of teeth.
- If tone ring and sensor
block are not aligned properly
oscillation may occur. Small
dimensional deviations can
result in this failure code.
Issue occurs shortly after
going into service and after
driving.
- Check condition and
retention of ABS sensor spring
clip as well as the mounting
block.
- Check for corroded or
damaged wiring between
the ECU and the ABS wheel
speed sensor.
- Turn the wheel at half a
revolution per second and
verify 0.2 AC volt sensor
output voltage.
Unexpected ECU - Verify if system is a 4S/2M
confi guration. ECU and only 2 sensors
are being used that they are
plugged into the C and D
sensor ports on the ECU.
- Verify no signs of moisture or
corrosion at E or F sensor port.
- If a sensor has been installed
on the E or F sensor port at
some point and is no longer
present, reconfi gure the ECU
using WABCO TOOLBOX
PLUS™ diagnostic software.