21-028-14

NUMBER:
GROUP:
DATE:
21-028-14
Transmission and
Transfer Case
September 17, 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:
2013
(LD)
Charger
2013
(LX)
300
NOTE: This bulletin applies to vehicles 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) and are
broken down per engine application.
3.6L Engine
• Hanging in gear during HOT ambient temperature conditions and high engine loads.
• Excessive pedal needed to downshift in high altitudes (i.e. passing).
• Poor shift quality, or high transmission temperatures during track or sport driving.
5.7L Engine
•
•
•
•
•
•
Hanging in gear at high engine speeds during aggressive driving.
Gear shift point enhancements during high load or race track driving.
Excessive pedal needed to downshift in high altitudes (i.e. passing).
Poor shift quality or high transmission temperatures during track or sport driving.
Improved acceleration response from speeds greater than 36 Mph (58 Kph) (Japan
Market Only).
Bump sensation felt during deceleration or braking.
21-028-14
-2-
6.4L Engine
•
•
Bump sensation felt during deceleration or braking.
Inconsistent downshift during Wide Open Throttle (WOT) accelerations at highway
speeds (i.e. passing).
• Transmission enhancements to improve acceleration while in reverse going uphill on
steep grades.
3.0L Engine (LX Only)
•
Erratic excessive shifting during low speed, light pedal driving.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available, verify
all vehicle systems are functioning correctly. If any DTCs 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 available. Instructions for flashing
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. Clear any DTCs that may have been set in other modules due to reprogramming. The
wiTECH™ application will automatically present all DTCs 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-H9
Description
Module, Transmission Control (TCM) - 2 - Automatic
Reprogram
Transmission
(1 - Semi-Skilled)
FAILURE CODE:
FM
Skill Category
Flash Module
Amount
0.2 Hrs.