21-024-14

I
C
H RYSLE R
NUMBER:
GROUP:
~ AA-
Ql
"'
DATE:
21-024-14
Transmission and
Transfer Case
July 25 , 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 15.01 OR HIGHER TO
PERFORM THIS PROCEDURE.
SUBJECT:
Flash : Transmission Shift Enhancements
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Transmission Control
Module {TCM) with new software.
MODELS:
2014
LO
Charger
2014
LX
300
NOTE: This bulletin applies to vehicles built on or before March 21, 2014 (MOH
0321XX) equipped with the WA580 Automatic Transmission (Sales Codes
DGJ).
SYMPTOM/CONDITION:
The following Transmission Control Module (TCM) calibration improvements are available
for vehicles equipped with WA580 Automatic Transmission (Sales Code DGJ).
3.6L Engine
•
Poor powertrain response or performance when trying to accelerate from moderate
vehicle speed in HOT ambient temperature conditions.
•
Short shifting or surging during near to WOT accelerations with mild ambient
temperature conditions .
• Transmission does not maintain vehicle set speed when cruise control is active and
vehicle is traveling down steep grades .
•
Hanging in gear complaints during HOT ambient temperature condition or when
aggressively driving and WOT throttle is requested .
5.7L Engine
•
Hanging in gear complaints during HOT ambient temperature condition or when
aggressively driving and WOT throttle is requested.
-2-
21-024-14
DIAGNOSIS:
Using a Scan Tool (wiTECH™) with the appropriate Diagnostic Procedures available in
TechCONNECT, verify no Diagnostic Trouble Codes (DTC's) are set. If DTC's are present
record them on the repair order and repair as necessary before proceeding further with this
bulletin .
If any of the above conditions are present, 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 TCM with the latest software . 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.
2. 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
No:
18-19-05-C9
Description
Skill Category
Module, Transmission Control (TCM) - 2 - Automatic
Reprogram
Transmission
(1 - Semi-Skilled)
FAILURE CODE:
IFlash Module
Amount
0.2 Hrs.