21-015-15

NUMBER:
GROUP:
DATE:
21-015-15
Transmission and
Transfer Case
March 04, 2015
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 FCA US 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 15.03 OR HIGHER TO PERFORM THIS
PROCEDURE.
SUBJECT:
Flash: C1499-92-RDM Motor Position C1496-92-PTU Motor Position
OVERVIEW:
This bulletin involves updating the software in the Power Transfer Unit (PTU), Rear
Driveline Module (RDM) and Drivetrain Control Module (DTCM).
MODELS:
2014-2015
(KL)
Jeep Cherokee
2015
(UF)
Chrysler 200
NOTE: This bulletin applies to vehicles built on or before December 25, 2014 (MDH
1225XX). KL vehicles equipped with Jeep Active Drive (Sales Codes DK2 or
DK4). UF vehicles equipped with AWD Ride and Handling Suspension (Sales
Code SDA) or AWD Sport Suspension (Sales Code SDD)
SYMPTOM/CONDITION:
A customer with a (KL) vehicle may experience difficulty shifting out of 4 Wheel Low
(4WL). A customer with a (UF) vehicle may experience All Wheel Drive (AWD) not
operating correctly. On further inspection the Technician my find Diagnostic Trouble Codes
(DTCs):
•
•
C1499-92-RDM Motor Position - Performance or Incorrect Operation.
C1496-92-PTU Motor Position - Performance or Incorrect Operation.
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DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify all of the AWD systems are functioning as designed. If DTCs or
symptom conditions, other than the ones listed above are present, record the issues on the
repair order and repair as necessary before proceeding further with this bulletin.
If the customer describes the symptom/condition listed above or if the technician finds the
DTC, perform the Repair Procedure.
REPAIR PROCEDURE:
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.
1. Reprogram the PTU, RDM and the DTCM with the latest available software. Detailed
instructions for flashing control modules using the wiTECH Diagnostic Application are
available by selecting the “HELP” tab on the upper portion of the wiTECH window,
then “HELP CONTENTS.” This will open the Welcome to wiTECH Help screen where
help topics can be selected.
2. Is this vehicle a KL?
a. Yes >>> Proceed to Step #3.
b. No >>> Proceed to Step #8.
3. Is the vehicle stuck in 4 wheel Low/Lock?
a. Yes >>> Proceed to Step #4.
b. No >>> Proceed to Step #8.
4. Raise the vehicle on the hoist.
5. Aggressively rotate/rock one of the rear wheels back and forth, in order to free up the
axle lock shift sleeve and relieve the torque lock in the system.
6. Perform a key cycle, change the ignition position from lock to run, it is not necessary to
start the engine. You should hear the motor in the rear axle actuator move while the
relearn process is occurring immediately after key-on.
7. It may be necessary to repeat steps 5 and 6 multiple times in order for the relearn
procedure to be successful.
NOTE: If after multiple attempts the vehicle will not coming out of 4 Wheel
Low/Lock, check for active DTC and follow normal diagnostic.
8. Clear any DTCs that may have been set in any module due to reprogramming. The
wiTECH application will automatically present all DTCs after the flash and allow the
DTCs to be cleared.
9. Did all of the DTCs, clear?
a. Yes >>> This bulletin has been completed, return the vehicle to the customer.
b. No >>> This bulletin has been completed, perform normal DTC diagnostics in
TechConnect for any active DTC.
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POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation
No:
18-19-17-94
Description
Module, PTU, RDM and DTCM Reprogram
(0 - Introduction)
Skill Category
2- Automatic
Transmissio
Amount
0.3 Hrs.
NOTE: The expected completion time for the flash download portion of this
procedure is approximately 5 minutes. Actual flash download times may be
affected by vehicle connection and network capabilities.
FAILURE CODE:
FM
Flash Module