44
Diagnostics
Blink
Code
SPN
FMI
Suspect
Component
and Location
ITP
Function
Fault
Description
(FMI)
Cause
Repair Information
3
3
12
Wheel
speed
sensor c
N/A
Bad
Intelligent
Device or
Component
A non-plausible
sensor frequency
has been
measured.
- Check sensor wiring and
connectors for intermittent
contact.
- Check if brake at this location
is operating correctly, i.e.,
potentially dragging.
- Check for corroded or
damaged wiring between
the ECU and the ABS wheel
speed sensor.
3
3
13
Wheel
Speed
Sensor C
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.
4
4
0
Wheel
Speed
Sensor D
N/A
Data Valid,
But Above
Normal
Operation
Range (Most
Severe
Level)
Implausible high
frequencies
detected.
- Check for possible EM
disturbances, that couple into
the sensor line.
Содержание 400 500 320 0
Страница 148: ...148 Troubleshooting Fig 9 9 4017182a...
Страница 149: ...149 Troubleshooting Fig 9 10 4017180a...
Страница 150: ...150 Troubleshooting Fig 9 11 4017173a...
Страница 156: ...156 Troubleshooting Fig 9 15 4017183a...
Страница 157: ...157 Troubleshooting Fig 9 16 4017187a Fig 9 17 4012475b 3 2 SOLENOID VALVE CABLE P N 472 170 997 0 1 2...
Страница 174: ...174 Troubleshooting Fig 9 35 4017186a...
Страница 187: ...187 Notes Notes...