Engine Controls - MIL ON/Multiple Fuel Trim DTC's
NUMBER: 18-023-11GROUP: Vehicle Performance
DATE: May 06, 2011
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 11.03 OR HIGHER TO PERFORM THIS PROCEDURE.
SUBJECT:
Flash: MIL Illumination And Driveability And Transmission Shifting Improvements
OVERVIEW:
This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2011 (DD) RAM 3500 CAB Chassis
2011 (DJ) RAM Truck 2500
2011 (DS) RAM Truck 1500
2011 (ND) Dakota
NOTE:
This Service Bulletin applies to vehicles equipped with a 3.7L, 4.7L or 5.7L engine (sales code EKG, EVE, EZC or EZH), a 545RFE or 42RLE transmission (Sales Code DGQ Or DGV) built before February 1, 2011 (MDH 0201 XX).
SYMPTOM/CONDITION:
Some customers may notice any of the following;
MIL Illumination
Upon further investigation the Technician may find that the following Diagnostic Trouble Codes (DTC) have been set:
a. P2096 - Downstream Fuel Trim System 1 Lean (5.7L Engines).
b. P2097 - Downstream Fuel Trim System 1 Rich (5.7L Engines)
c. P2098 - Downstream Fuel Trim System 2 Lean (5.7L Engines)
d. P2099 - Downstream Fuel Trim System 2 Rich (5.7L Engines)
Driveability Improvements:
a. Engine seems to lacks power at high engine RPM (5.7L and 4.7L Engines).
b. Shudder or shake condition on wide open throttle stab during downshift event (5.7L and 4.7L Engines).
c. EVAP Diagnostic Enhancements. This diagnostic routine will be disabled while the vehicle is in decel fuel shut off mode.(3.7L/4.7L Engines only)
d. Audible knock sound on WOT launchs (DJ/DD 5.7L Engines only)
Transmission Improvements:
a. High engine RPM's needed before vehicle will upshift from 3rd to 4th. (5.7L and 4.7L Engines).
b. Harsh 1st to 2nd gear upshift(5.7L and 4.7L Engines)
c. Unexpected or busy downshift while coasting between 45-48 mph (DS 5.7L Engines only)
DIAGNOSIS:
Using a Scan Tool (wiTECH(TM)) with the appropriate Diagnostic Procedures available in TechCONNECT, verify no DTC's are set. If DTC's are present other then the ones listed above record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the customer describes the symptom or if the technician finds the DTC, 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 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. After TCM reprogramming, the following must be performed:
a. 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.
2. 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.