TSB 08-048-05 Differential Mounted Rear Wheel Speed Sensor - JeepForum.com
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Unread 11-21-2005, 11:02 AM   #1
oldnavy
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Join Date: Oct 2005
Location: SwampEast MO
Posts: 345
TSB 08-048-05 Differential Mounted Rear Wheel Speed Sensor

NUMBER: 08-048-05
GROUP: Electrical
DATE: September 01, 2005

SUBJECT:
Rear Axle Fluid May Contaminate The Differential Mounted Rear Wheel Speed
Sensor
OVERVIEW:
This bulletin involves the replacement of the differential mounted rear
wheel speed sensor
and the replacement of the rear axle fluid.
MODELS:
2005 (KJ) Liberty / Cherokee
SYMPTOM/CONDITION:
The customer may experience a brake/ABS warning light or a Malfunction
Indicator Lamp
(MIL) illumination. On vehicles equipped with an Anti-Lock Brake System
(ABS), a Red
brake light and/or an Amber ABS light may illuminate and remain on. On
vehicles NOT
equipped with ABS, the MIL may illuminate. The MIL may be due to DTC P0501 -
Vehicle
Speed Signal Performance / Vehicle Speed Sensor Plausibility.
The above condition may be due a rear differential mounted rear wheel speed
sensor that
may be contaminated by the rear axle fluid.

DIAGNOSIS:
Using the diagnostic Service Info procedures available on TechCONNECT, if
proper
diagnosis determines that the rear wheel speed sensor requires replacement,
then perform
the Repair Procedure.
PARTS REQUIRED:
Qty. Part No. Description
1 56041393AA Sensor, Wheel Speed (rear)
1 05086373AA O-Ring, Sensor
1 05013477AA Axle RTV
1 04897151AB Brake Parts Cleaner - Non-Chlorinated VOC
Exempt
AR (3) 05010320AA Lubricant, Mopar Synthetic Gear - 75W-90
AR (3) 04874469 Lubricant, Mopar Synthetic Gear & Axle -
75W-140 (if towing)
AR (1) 04318060AB Limited Slip Additive (if Trac-Lok Equipped)
NUMBER: 08-048-05
GROUP: Electrical
DATE: September 01, 2005
REPAIR PROCEDURE:
1. Disconnect and isolate the negative battery cable from the battery.
2. Raise the vehicle on a suitable lift.
3. Remove the rear axle differential housing cover.
4. Thoroughly clean the axle, differential, and differential cover of old
oil, debris, and
RTV.
5. Remove the rear wheel speed sensor electrical connector. Remove the
sensor from
the axle.
6. Install the new O-ring, p/n 05086373AA, to the new rear wheel speed
sensor.
7. Lubricate the new rear wheel speed sensor and O-ring
8. Install the new rear wheel speed sensor, p/n 56041393AA, to the axle.
Tighten the
attaching bolt to 9 Nm (80 in. lbs.).
9. Verify that the seal is securely in place between the sensor and wiring
connector.
Install the sensor electrical connector to the sensor.
10. Apply a bead of Axle RTV sealant, p/n 05013477AA, to the differential
housing cover.
CAUTION: If cover is not installed within 3 to 5 minutes of new RTV sealant
application, the cover must be cleaned and new RTV sealant applied.
Failure to follow instructions will cause a leak.
11. Install the cover and identification tag. Tighten cover bolts in a
criss-cross pattern to 41
Nm (30 ft. lbs.).
12. If not already removed, remove the fill plug.
13. If axle is equipped with a Trac-Lok differential, install 4 oz. of
Limited Slip Additive to
the differential.
14. Fill the axle differential with the correct axle lubricant.
15. Install the fill plug.
16. Verify that the rear wheel speed sensor and differential housing cover
is correctly
installed.
17. Lower vehicle.
18. Connect the negative battery cable to the battery. Set the clock to the
correct time.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
Description Amount
08-19-15-90 Sensor, Differential Mounted Rear Wheel Speed -
Replace
and Rear Axle Fluid - Replace
0.6 Hrs.
FAILURE CODE:
71 Oil Leak

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[b]'05 Liberty Sport CRD, Stone White , Her's
'05 Dodge Magnum SE, Cool Vanilla White, Mine[/B] Waiting for diesel version.
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Unread 11-21-2005, 06:28 PM   #2
dcxman
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2006 KJ Liberty 
 
Join Date: Nov 2005
Location: beaufort, mo
Posts: 700
Thanks for this info from my original post. The only light on is the ESP and the little skidding sign. It doesn't always stay on, however it is on frequently. Could this be just an electronic sensor? Also, when on, the ESP button is inoperative. Otherwise all functions operationally are normal. This is an 06 CRD with 500 miles. Problem started at 300 mi.
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Unread 11-22-2005, 05:11 AM   #3
brandoncrone
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Location: Saranac Lake, New York
Posts: 614
Have you had it back to the dealer?? There must be a trouble code stored in the ESP for the light to keep coming on.
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Unread 11-22-2005, 05:49 AM   #4
oldnavy
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Not always. Also after x number of restarts it clears itself, then it can start the same process over again. Our CRD did this with a code of P0101 for MAF, however after replacement I am wondering if maybe it wasn't the EGR sticking open (no code, I have a ScanGage) as ours really blows the smoke. I plan on talking to service manager about the problem today.
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Unread 11-22-2005, 03:16 PM   #5
dcxman
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Quote:
Originally Posted by brandoncrone
Have you had it back to the dealer?? There must be a trouble code stored in the ESP for the light to keep coming on.
I have had it to the dealer. The mechanic said that the two codes did not apply, and that he was going to check with STAR(?) to see whether the ABS module needs replacing or it there is another fix.
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Unread 11-22-2005, 03:33 PM   #6
brandoncrone
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Location: Saranac Lake, New York
Posts: 614
It may not be just the ABS module, there is a dynamics sensor (consists of the yaw sensor and lateral acceleration sensorand a steering angle sensor
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