Electrical - Locks Inoperative/Liftgate Triggers Alarm
NUMBER: 08-040-04GROUP: Electrical
DATE: December 9, 2004
THE DRBIII(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE ON DealerCONNECT.
FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE FLASH FILES AND REPROGRAMMING INSTRUCTIONS WILL BE AVAILABLE ON ITIL/ISIS DVD FEBRUARY, 2005.
SUBJECT:
Flash: Driver And Passenger Power Door Lock Switches Inoperative And Opening the Liftgate Triggers The Theft Alarm
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Body Control Module (BCM) with new software.
MODELS:
2004 - 2005 (RG) Chrysler Voyager (International Markets)
2004 - 2005 (RS) Town & Country/Caravan
NOTE:
This bulletin applies to 2005 vehicles equipped with Power Locks only (sales code JPB) and 2004 - 2005 vehicles equipped with Power Locks, Power Liftgate, and Security Alarm (sales codes JPB, JRC and LSA respectively).
SYMPTOM/CONDITION:
The vehicle operator may describe:
^ The alarm sounds erroneously when opening the power liftgate using the key fob while the Vehicle Theft Alarm (VTA) is armed.
^ The driver's and/or passenger's door lock switches are inoperative.
The technician may find "Left Unlock Output Failure" and/or "Right Unlock Output Failure" Diagnostic Trouble Codes (DTC's) in the BCM.
DIAGNOSIS:
1. Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures Manual, verify all systems are functioning as designed. If DTCs are present, other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin.
2. With the ignition switch in the "RUN" position, determine the original part number of the BCM currently in the vehicle. Using the DRBIII(R) select:
a. "DRBIII(R) Standalone"
b. "1998 - 2005 Diagnostics"
c. "All (Except Below)"
d. "Body Interior"
e. "Body Computer"
f. "Module Display"
g. Record the "Software part # " on the repair order for later reference.
h. Check DTC's
3. If the vehicle operator describes or experiences the Symptom/Condition, use the table to determine the appropriate action.
SPECIAL TOOLS/EQUIPMENT REQUIRED:
NOTE:
An updated J1962 cable has been released. This cable has a red colored connector at the DRBIII(R) connection. Use this cable whenever a flash is being performed.
REPAIR PROCEDURE:
NOTE:
Whenever a controller is programmed, the software in the DRBIII(R); must be programmed with the latest revision level available.
NOTE:
If this flash process is interrupted/aborted, the flash should be restarted and then follow the directions on the DRBIII(R).
1. Before beginning the reprogramming procedure, remove any old flash reprogramming files from the DRBIII(R) memory. To clear the memory from the MAIN MENU:
a. Simultaneously press the "MORE" and "YES" keys.
b. A screen will appear requesting a "COLD BOOT".
c. Follow the on screen instructions by selecting the "F4" key.
d. When the DRBIII(R) reboots to the MAIN MENU, proceed to Step # 2
2. Connect the DRBIII(R) to TechCONNECT. Open TechTOOLS and verify that the "DRBIII(R) Status: Connected" message is in the upper right corner of the TechTOOLS screen.
3. Enter the "Software part # " recorded during "Diagnosis" in the "Parts Criteria" area and select "Show Updates". TechTOOLS will populate the available updates.
4. Select the calibration.
5. Select the "DRBIII" radio button which is next to the "Download/Update" button.
6. Select the "Download/Update" button.
7. Monitor the "Flash Download/Update Progress" window on the TechCONNECT and follow the instructions on TechCONNECT. When the flash process is complete, proceed to Step # 8.
8. Disconnect the DRBIII(R) from TechCONNECT.
9. Open the hood, install a battery charger and verify that the charging rate provides approximately 13.5 volts.
10. Connect the DRBIII(R) to the vehicle.
11. Turn the ignition to the "Run" position (engine not running).
12. Download the flash from the DRBIII(R) to the vehicle. Using the DRBIII(R) select:
a. "Vehicle Flash"
b. Follow the directions on the DRBIII(R) screen.
13. Verify that the problem cannot be repeated by cycling the ignition switch OFF/ON and actuating both door lock switches a few times. If any door lock failure still persists then further diagnosis is necessary. Verify the BCM "Software p/n" was updated to the new software p/n using Diagnosis Step # 2.
NOTE:
Due to the BCM programming procedure, a DTC may be set in other modules (TCM, PCM, MIC, SKIM, etc.) within the vehicle, if so equipped. Some DTC's may cause the MIL to illuminate. Check all modules using "Module Scan", record the DTC's, and erase these DTC's prior to returning the vehicle to the customer. Erase any DTC's in the PCM only after all other modules have had their DTC's erased.
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.