Engine Controls - Clicking From Rear of Vehicle on Accel
NUMBER: 21-014-05GROUP: Transmission
DATE: August 23, 2005
THE StarSCAN FLASH FILES FOR THIS BULLETIN ARE AVAILABLE VIA THE
INTERNET.
THE FLASH FILE WILL BE AVAILABLE ON THE NEXT StarSCAN(R) UPDATE CD
RECEIVED AFTER CD 6.02.
SUBJECT:
FLASH: Clicking Sound From Rear of Vehicle After Accelerating From A Stop
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
MODELS:
2005 - 2006 (LX) 300/Magnum
NOTE:
This bulletin applies to 2006 vehicles equipped with a 3.5L engine (sales code EGG) and a 42RLE transmission (sales code DG6) built on or before July 29, 2005 (MDH 0729XX) and 2005 vehicles equipped with a 2.7L or 3.5L engine (sales code EER or EGG) and a 42RLE transmission (sales code DG6).
SYMPTOM/CONDITION:
The new PCM software corrects a customer complaint of a click sound, coming from the rear of the vehicle, immediately after accelerating the vehicle from a stop. This sound may be verified by driving the vehicle and allowing the transmission to shift into 4th gear then allowing the vehicle to coastdown to a stop, without tipping into the accelerator pedal before the complete stop. The sound will be heard immediately after launching the vehicle and will seem to be coming from the rear of the vehicle.
DIAGNOSIS:
Using a Scan Tool (StarSCAN) with TechCONNECT and the appropriate Diagnostic Procedures, verify all engine and transmission systems are functioning as designed. If DTCs are present, record them on the repair order and repair as necessary before proceeding further with this service bulletin.
If the vehicle operator experiences the Symptom/Condition perform the Repair Procedure.
NOTE:
There are two methods to download flash files to StarSCAN. The first method (preferred) is to download the flash files to the StarSCAN from the internet. The second method is to download the flash files from the StarSCAN Software Update CD.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
REPAIR PROCEDURE - USING THE INTERNET TO RETRIEVE THE FLASH FILE:
NOTE: The StarSCAN(R) must be at version 5.02 or higher before the "Using The Internet To Retrieve The Flash File" repair procedure can be performed.
NOTE: The StarSCAN(R) diagnostic scan tool fully supports Internet connectivity. However, in order to take advantage of this feature you must first configure the StarSCAN(R) for your dealership's network. For instruction on setting up your StarSCAN(R) for the dealer's network; refer to the StarSCAN(R) Quick Start Networking Guide available on the website under the "download center".
NOTE:
If this flash process is interrupted/aborted, the flash should be restarted.
1. Open the hood, install a battery charger and verify that the charging rate provides approximately 13.5 volts.
2. Connect the CH9410 StarSCAN(R) ethernet cable to the StarSCAN(R) and the dealer's network drop.
3. Connect the CH9404 StarSCAN(R) vehicle cable to the StarSCAN(R) and the vehicle.
4. Power ON the StarSCAN(R).
5. Retrieve the old ECU part number. Using the StarSCAN(R) at the "Home" screen:
a. Select "ECU View"
b. Touch the screen to highlight the appropriate ECU in the list of modules.
c. Record the "Part Number", displayed on the "ECU Overview" screen, for later reference.
6. Download the flash file from the internet to the StarSCAN�. Using the StarSCAN(R) at the "ECU Overview" screen:
a. Select "More Options"
b. Select "ECU Flash"
c. Select "Browse for New File". Follow the on screen instructions.
d. Select "Download to Scantool".
e. Select "Close" after the download is complete, then select "Back".
f. Highlight the listed calibration.
g. Select "Update Controller".
h. When the update is complete, select "OK".
NOTE:
Due to the ECU programming procedure, a DTC may be set in other modules (TCM, BCM, MIC, SKREEM, etc.) within the vehicle, if so equipped. Some DTC's may cause the MIL to illuminate. From the "Home" screen select "System View". Then select "All DTCs". Press "Clear All Stored DTCs" if there are any DTCs shown on the list.
NOTE:
The following step is required by law when reprogramming a PCM and/or TCM.
7. Type the necessary information on the "Authorized Modification Label" p/n 04275086AB and attach near the VECI label (Fig. 1). VECI label (Fig. 1).
REPAIR PROCEDURE - USING SOFTWARE UPDATE CD TO RETRIEVE THE FLASH
FILE:
NOTE: Before flashing this module, make sure the StarSCAN(R) is operating at 5.02 or later.
NOTE:
If this flash process is interrupted/aborted, the flash should be restarted.
NOTE:
For detailed information on the operation of the StarSCAN(R), refer to the Quick Reference documentation provided in the StarSCAN(R) documentation kit. In addition, more recent information may also be available at the website. Look under "Training Aids" and also under "Download Center > Frequently Asked Questions" for more help.
1. Open the hood, install a battery charger and verify that the charging rate provides approximately 13.5 volts.
2. Connect the CH9404 StarSCAN(R) vehicle cable to the StarSCAN(R) and the vehicle.
3. Power ON the StarSCAN(R).
4. Retrieve the old ECU part number. Using the StarSCAN(R) at the "Home" screen:
a. Select "ECU View"
b. Touch the screen to highlight the appropriate ECU in the list of modules.
c. Record the "Part Number", displayed on the "ECU Overview" screen, for later reference.
5. Insert the StarSCAN� Software Update CD into the TechCONNECT or equivalent PC.
The StarSCAN(R) Software Update CD will start automatically.
a. Select "Download Controller Flash".
b. Follow the on screen instructions.
6. At the "Select the method for looking up controller flash updates" screen:
a. If the old "Part Number" was recorded in Step # 4, proceed to Step # 7.
b. If the old "Part Number" is not known, proceed to Step # 8.
7. Select "Enter part number".
a. Follow the on screen instructions. Enter the "Part Number" recorded in Step # 4 when prompted to do so.
b. When completed, proceed to Step # 9.
8. Select "Enter YME Information".
a. Follow the on screen instructions. Select "Next" after each step. Select "Finish" after completing the last step.
b. When completed, proceed to Step # 9.
9. Using the mouse highlight the appropriate "Calibration".
a. Follow the on screen instructions.
10. With the StarSCAN(R) powered OFF, connect the USB Key and Gender Changer to the StarSCAN(R) USB port (Fig. 2).
11. Connect the StarSCAN(R) to the vehicle (if not already connected).
12. Power ON the StarSCAN(R).
13. Reprogram the ECU by downloading the file from the USB key to the StarSCAN(R).
Using the StarSCAN(R) at the "Home" screen:
a. Select "Flash Download".
b. Select "Use USB device" and follow the on screen instructions.
c. At the "Flash File List" screen, highlight the appropriate ECU "Calibration".
d. Select "Download to Scantool".
e. Select "Close" after the download is complete, then select "Back".
f. Highlight the listed calibration.
g. Select "Update Controller".
h. When the update is complete, select "OK".
NOTE:
Due to the ECU programming procedure, a DTC may be set in other modules (TCM, BCM, MIC, SKREEM, etc.) within the vehicle, if so equipped. Some DTC's may cause the MIL to illuminate. From the "Home" screen select "System View". Then select "All DTCs". Press "Clear All Stored DTCs" if
there are any DTCs shown on the list.
NOTE:
The following step is required by law when reprogramming a PCM and/or TCM.
14. Type the necessary information on the "Authorized Modification Label" p/n 04275086AB and attach near the VECI label (Fig. 1).
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.