57
Appendix I
SPN
Component
FMI Fault Description
Repair
790
Wheel speed
sensor/tone
ring front axle
right
9
Air gap too large
Tone ring damaged
or corroded
Noise on sensor
output signal
• Check for the correct sensor setting (air gap 0.2 to 1.7 mm).
• Check the bearing clearance and tone ring run out.
Eliminate the cause of the increased air gap and correct the
sensor setting.
• Check the tone ring for damage (missing teeth and
corrosion); replace if necessary.
•
Check the sensor for correct installation and bushing/clip for
damage.
10
Noise on sensor
output signal
• Check for the correct sensor setting (air gap 0.2 to 1.7 mm).
• Check the bearing clearance and tone ring run out.
Eliminate the cause of the increased air gap and correct the
sensor setting.
• Check the tone ring for damage (missing teeth and
corrosion); replace if necessary.
•
Check the sensor for correct installation and bushing/clip for
damage.
11
Sensor signal noisy,
brake chatter
• Check for the correct sensor setting (air gap 0.2 to 1.7 mm).
• Check the bearing clearance and tone ring run out.
Eliminate the cause of the increased air gap and correct the
sensor setting.
• Check the tone ring for damage (missing teeth and
corrosion); replace if necessary.
•
Check the sensor for correct installation and bushing/clip for
damage.
12
Noise on sensor
output signal
• Check the correct sensor setting (air gap 0.2 to 1.7 mm).
• Check the bearing clearance and tone ring run out.
Eliminate the cause of the increased air gap and correct the
sensor setting.
• Check the tone ring for damage (missing teeth and
corrosion); replace if necessary.
•
Check the sensor for correct installation and bushing/clip for
damage.
791
Wheel speed
sensor/tone
ring rear axle
left
1
Air gap too large
Tone ring damaged
or corroded
• Check for the correct sensor setting (air gap 0.2 to 1.7 mm)
• Check the bearing clearance and tone ring run out.
Eliminate the cause of the increased air gap and correct the
sensor setting.
• Check the tone ring for damage (missing teeth and
corrosion); replace if necessary.
2
Tire mismatch
•
Check for tire size mismatch.
• Check for correct number of tone ring teeth.
• Verify that the ECU is programmed correctly for vehicle.
