NUMBER: 21-015-15 REV.
GROUP: Transmission and
Transfer Case
DATE: April 03, 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.
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-015-15, DATED MARCH 04,
2015, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A COMPLETE
REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT REVISIONS.
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 15.04 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.
21-015-15 REV. A -2-
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. Is the vehicle a KL and equipped with sales code DK4?
a. Yes >>> Proceed to Step #2.
b. No >>> Proceed to Step #12.
2. Perform the flash for the DTCM. 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.
3. Perform the RDM flash, using the procedure below:
a. Turn the ignition off.
b. Pull fuse F10 (PTU 4WD, 20 amp) in the PDC (Power Distribution Center) (Fig. 1).
c. Turn the ignition key to the RUN position and perform the RDM flash.
d. When the flash has completed, turn the ignition key OFF and reinstall fuse F10.
4. Perform the PTU flash, using the procedure below:
a. Turn the ignition off.
b. Pull fuse F76 (RDM 4WD, 20 amp) in the PDC (Power Distribution Center) (Fig. 1).
c. Turn the ignition key to the RUN position and perform the PTU flash.
d. When the flash is complete, turn the ignition key OFF and reinstall fuse F76.
-3- 21-015-15 REV. A
Fig. 1 Module Fuse Locations
1 - F76 RMD 4WD
2 - F10 PTU 4WD
5. Is the vehicle stuck in 4 wheel Low/Lock?
a. Yes >>> Proceed to Step #6.
b. No >>> Proceed to Step #10.
6. Raise the vehicle on the hoist.
7. 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.
8. 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.
9. It may be necessary to repeat steps 5 and 6 multiple times in order for the relearn
procedure to be successful.
10. 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.
NOTE: If after multiple attempts the vehicle will not coming out of 4 Wheel
Low/Lock, check for active DTC and follow normal diagnostic.
11. 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.
12. Perform the flash for the DTCM and PTU. 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.
21-015-15 REV. A -4-
13. 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.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation Description Skill Category Amount
No:
18-19-17-95 Modules, PTU, and DTCM - 2- Automatic 0.2 Hrs.
Reprogram Transmissio
(0 - Introduction)
18-19-17-96 Modules, PTU, RDM and DTCM - 2- Automatic 0.3 Hrs.
Reprogram - DK4 Only Transmissio
(0 - Introduction)
18-19-17-97 Modules, PTU, RDM and DTCM - 2- Automatic 0.4 Hrs.
Reprogram; Includes Unlock 4 Wheel Transmissio
Low Procedure - DK4 Only
(0 - Introduction)
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:
The dealer must choose which failure code to use. If the customer came in with an
issue and the dealer found updated software to correct that issue, use failure code
CC, for all other use failure code RF.
• If the customer’s concern matches the SYMPTOM/CONDITION identified in the
Service Bulletin, than failure code CC is to be used.
• If an available flash is completed while addressing a different customer concern,
failure code RF is to be used.
CC Customer Concern
RF Routine Flash
