Jeep KJ Liberty 2005 Service Manual page 25

LEFT FRONT WHEEL SPEED SENSOR SIGNAL —
TEST
1 Turn the ignition on.
With the DRBIII , read DTCs.
With the DRBIII , read and record Freeze Frame information.
NOTE: The ABM must sense ALL 4 wheels at 25 km/h (15 mph) before it will
extinguish the ABS indicators.
Does the DRBIII display WHEEL SPEED SENSOR SIGNAL and WHEEL SPEED
SENSOR CIRCUIT?
Yes → Refer to the affected WHEEL SPEED SENSOR CIRCUIT for the
→ Go To 2
No
2 Turn the ignition on.
With the DRBIII in Sensors, monitor ALL the Wheel Speed Sensor Signals while an
assistant drives the vehicle.
Slowly accelerate as straight as possible from a stop to 24 km/h (15 mph).
Is the affected Wheel Speed Signal showing 0 km/h (0 mph)?
Yes → Go To 3
→ The condition is not present at this time. Monitor DRBIII
No
3 Turn the ignition off.
Inspect the ABM connector, affected Wheel Speed Sensor, and affected Wheel Speed
Sensor connector.
Is the Wheel Speed Sensor or any connector damaged?
Yes → Repair as necessary.
→ Go To 4
No
4 Turn ignition off.
Inspect the affected Tone Wheel for damaged, missing teeth, cracks, or looseness.
NOTE: The Tone Wheel teeth should be perfectly square, not bent, or nicked.
Is the affected Tone Wheel damaged?
Yes → Replace the Tone Wheel in accordance with the Service Informa-
→ Go To 5
No
5 Turn the ignition off.
Using a Feeler Gauge, measure the affected Wheel Speed Sensor Air Gap.
NOTE: Refer to the appropriate service information, if necessary, for
procedures or specifications.
Is the Air Gap within specifications?
Yes → Go To 6
→ Repair as necessary.
No
ACTION
related symptom(s).
Perform ABS VERIFICATION TEST - VER 1.
parameters while wiggling the related wiring harness. Refer to
any Technical Service Bulletins(TSB) that may apply. Visually
inspect the related wiring harness and connector terminals.
Perform ABS VERIFICATION TEST - VER 1.
Perform ABS VERIFICATION TEST - VER 1.
tion.
Perform ABS VERIFICATION TEST - VER 1.
Perform ABS VERIFICATION TEST - VER 1.
Continued
23
BRAKES (25E)
APPLICABILITY
All
All
All
All
All