A/T Controls - A/T Shudder/Shift Issues
NUMBER: 21-001-12GROUP: Transmission and Transfer Case
DATE: January 11, 2012
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 12.01 OR HIGHER TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: Shudder And/Or Performance And/Or Transmission Shift Issues
OVERVIEW:
This bulletin involves flash reprogramming the Transmission Control Module (TCM) with new software.
MODELS:
2011 (LD) Charger
2011 (LX) Chrysler 300
NOTE:
This Service Bulletin applies to vehicles built with 3.6L or 5.7L engines (sales code ERB or EZH) with a NAG1 (W5A580) automatic transmission (sales code DGJ).
SYMPTOM/CONDITION:
Some customers may notice any of the following:
i. Delayed engagement after shifting into reverse or drive (All Engines).
ii. Upshift Delay when using the autostick + (upshift) feature (All Engines).
iii. RPM hang or transmission not shifting to the next higher gear in city traffic or parking lot low speed driving conditions (All Engines).
iv. Shudder feeling when shifted into Reverse or Drive (All Engines).
v. Poor Performance during upshifts or down shifts (All Engines).
vi. Excessive transmission shifting when climbing steep hills or towing a heavy trailer (3.6L engines only).
vii. Difficulty maintaining desired speed while driving/towing uphill when outside temperature are 90° (32° C) or above (3.6L engines only).
viii. Harsh down shifting during a wide open throttle event at speeds between 35 MPH (56 KPH) and 70 MPH (112 KPH) (3.6L engines only).
ix. Harsh down shifting with zero throttle input between 20 MPH (32 KPH) and 26 MPH (41 KPH) (5.7L engines only).
x. Intermittently autostick will not turn on or off when pressing autostick on/off button on the column shifter (LD Police Vehicles Only).
Updating the TCM software will correct these conditions
DIAGNOSIS:
Using a Scan Tool (wiTECH(TM)) 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 the above condition is present, perform the Repair Procedure.
PARTS REQUIRED:
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 1CM 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. After TCM reprogramming, Clear any DTC's 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.
3. Type the necessary information on the "Authorized Modification Label" and attach it near the VECI label.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.