Instruments - Fuel Gauge Fluctuation
NUMBER: 08-038-03GROUP: Electrical
DATE: December 16, 2003
THIS BULLETIN IS BEING PROVIDED IN ADVANCE. THE SOFTWARE IN THE DRBIII(R) MUST BE OPERATING WITH VERSION 59.0 OR HIGHER AVAILABLE ON THE DRBIII(R) UPDATE CD ON JANUARY 19, 2004.
SUBJECT:
Fluctuating Fuel Gauge Operation
OVERVIEW:
This bulletin involves updating the fuel gauge parameters in the Body Control Module (BCM).
MODELS:
2004 (CS) Pacifica
NOTE:
This bulletin applies to vehicles built on or before December 10, 2003 (MDH 1211XX).
SYMPTOM/CONDITION:
Vehicle operator may describe the fuel gauge drops to empty and then returns to the correct reading.
DIAGNOSIS:
Using the DRBIII(R) check for DTC's. If "Fuel Sending Unit 2 Open" DTC is present, check the BCM hardware part number. With the ignition switch in the "RUN" position, using the DRBIII(R) select:
1. "DRBIII(R) Standalone"
2. "1998 - 2004 Diagnostics"
3. "All (Except Below)"
4. "Body Interior"
5. "Body Computer"
6. "Module Display"
7. Record the "Part # " (the top part # displayed on DRBIII(R) screen) on the repair order for later reference.
If the "Part # " displayed is 04727604AG, perform the Repair Procedure. If the "Part #" displayed is 04727604AH or higher, further diagnosis is necessary, this bulletin does not apply.
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:
1. Open the hood, install a battery charger and verify battery state is above 12.5 volts.
2. With the ignition switch in the "RUN" position, perform a fuel gauge update. Using the DRBIII(R) select:
a. "DRBIII(R) Standalone"
b. "1998 - 2004 Diagnostics"
c. "All (Except Below)"
d. "Body Interior"
e. "Body Computer"
f. "Miscellaneous"
g. "Fuel Gauge Update"
h. Follow the instructions on the DRBIII(R) screen.
NOTE:
If the DRBIII(R) screen displays "Update not required for this module", then the BCM hardware is already at the 04727604AH level.
3. Verify that the BCM hardware part # has been updated. With the ignition switch in the "RUN" position, using the DRBIII(R) select:
a. "DRBIII(R) Standalone"
b. "1998 - 2004 Diagnostics"
c. "All (Except Below)"
d. "Body Interior"
e. "Body Computer"
f. "Module Display"
g. The "Part # " should be 04727604AH.
4. Erase any DTC's.
5. Disconnect the battery charger and close the hood.
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.