WABCO iABS 2S/1M Standard, Maintenance Manual

Page: 62 / 188

62
Diagnostics
Blink
Code
SPN FMI
Suspect
Component
and Location
ITP
Function
Fault
Description
(FMI)
Cause Repair Information
6 6 13 Wheel
Speed
Sensor F
N/A Wheel
Speed
Oscillating
Tone ring signal
irregular.
- Check for loose wheel
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.
6 6 14 Wheel
Speed
Sensor F
N/A Special
Instructions
Unexpected ECU
con fi guration.
- Verify if system is a 4S/2M
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, recon
fi gure the ECU
using WABCO TOOLBOX
PLUS™ diagnostic software.