21-001-14

NUMBER:
21-001-14
GROUP:
Transmission and
Transfer Case
DATE:
February 06, 2014
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system,
or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of Chrysler Group LLC.
HELP USING THE wiTECH DIAGNOSTIC APPLICATION FOR FLASHING AN ECU IS
AVAILABLE BY SELECTING “HELP” THEN “HELP CONTENTS” AT THE TOP OF
THE wiTECH DIAGNOSTIC APPLICATION WINDOW.
THE wiTECH SOFTWARE LEVEL MUST BE AT RELEASE 14.02 OR HIGHER TO
PERFORM THIS PROCEDURE.
SUBJECT:
Flash: ELSD Module Enhancements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Electronic Limited Slip
Differential (ELSD) with new software. If any of the following DTC’s are either Active or
Stored in the ELSD module’s memory, the ELSD motor will need to be replaced as well.
•
•
•
C1490-00-REAR DIFFERENTIAL ACTUATOR INITIALIZATION FAILURE
C148F-1D-REAR DIFFERENTIAL MEASURED MOTOR - CIRCUIT OUT OF
RANGE
C1489-96-REAR DIFFERENTIAL MOTOR BRAKE - COMPONENT INTERNAL
FAILURE
MODELS:
2011 - 2013
WK
Grand Cherokee
NOTE: This bulletin applies to vehicles equipped with the ELSD (Sales Codes DSF).
SYMPTOM/CONDITION:
The customer may indicate that their 4X4 lamp may be flashing (indicating a malfunction of
the 4X4 system).
In addition, one or more of the following Diagnostic Trouble Codes (DTC) are Active or
Stored in the ELSD control module’s memory.
•
•
•
C1490-00-REAR DIFFERENTIAL ACTUATOR INITIALIZATION FAILURE
C148F-1D-REAR DIFFERENTIAL MEASURED MOTOR - CIRCUIT OUT OF
RANGE
C1489-96-REAR DIFFERENTIAL MOTOR BRAKE - COMPONENT INTERNAL
FAILURE
21-001-14
-2-
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all ELSD systems are functioning as designed. If DTC's other then
the ones listed above are present, record them on the repair order and repair as necessary
before proceeding further with this bulletin.
If the customer describes the symptom, perform the Repair Procedure.
PARTS REQUIRED:
Qty.
Part No.
Description
AR (1)
68084266AB
Motor Kit, Axle
REPAIR PROCEDURE:
1. The ELSD Actuator will require replacement if DTC C1490-00-REAR DIFFERENTIAL
ACTUATOR INITIALIZATION FAILURE, C148F-1D-REAR DIFFERENTIAL
MEASURED MOTOR - CIRCUIT OUT OF RANGE, and/or C1489-96-REAR
DIFFERENTIAL MOTOR BRAKE - COMPONENT INTERNAL FAILURE is either
stored or active in the ELSD module’s memory. Were one or more of the previous
DTC’s either Active or Stored in the ELSD Module’s memory?
a. YES>>>Proceed to the next Step.
b. NO>>>Proceed to Step #3.
2. Replace the ELSD actuator (p/n 68084266AB). Refer to
DealerCONNECT>Service>TechCONNECT>Service Info>03 Differential and
Driveline>Rear Axle - 230 RIA>MOTOR, Electronic Limited
slip>Differential>Removal/Installation for additional information.
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2
volts. Do not allow the charging voltage to climb above 13.5 volts during the
flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
3. Reprogram the ELSD Module with the latest software. Help using the wiTECH
Diagnostic Application for flashing control modules is available through the wiTECH
Diagnostic Application. For instructions select the “HELP” tab on upper portion of the
wiTECH window, then “HELP CONTENTS”. This will open the Welcome to wiTECH
Help screen where help topics can be selected.
4. Verify there are no Diagnostic Trouble Codes (DTC) stored in the ELSD modules
memory. Then, using the wiTECH, perform the “ELSD Quicklearn” procedure.
5. Once complete, verify there are no Diagnostic Trouble Codes (DTC) stored in the
ELSD modules memory.
6. Clear any DTC's that may have been set in other modules due to reprogramming. The
wiTECH application will automatically present all DTC’s after the flash and allow the
tech to clear them.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
Description
Skill Category
Amount
-3-
21-001-14
No:
18-19-65-91
Module, Electronic Limited Slip (ELSD)
- Inspect/Reprogram (1 - Semi-Skilled)
0.2 Hrs.
NOTE: The expected completion time for the flash download portion of this
procedure is approximately 2 minutes. Actual flash download times may be
effected by vehicle connection and network capabilities.
FAILURE CODE:
FM
Flash Module
TIME ALLOWANCE:
Labor Operation
No:
08-46-34-91
Description
Module, Electronic Limited Slip (ELSD)
- Inspect/Reprogram and Replace
ELSD Actuator (2 - Skilled)
FAILURE CODE:
ZZ
Service Action
Skill Category
Amount
0.4 Hrs.