Engine Controls - MIL ON/DTC P0128 Set
Model: Sedona [GQ]Group: Fuel System(14)
Number: KT2008022101
Date: Thursday, February 21, 2008
Area: N. America
Subject:
Sedona (GQ) PCM Upgrade MIL ON With P0128 (Engine - 040)
- Description
This bulletin provides the procedure to upgrade the PCM software of some 2002 - 2005 SEDONA (GQ) 3.5L L vehicles, which may exhibit the malfunction indicator lamp illuminated with DTC P0128 stored in the PCM memory, even though there are no system faults.
^ P0128: Engine Coolant Thermostat Stuck Open
To correct this DTC occurrence, the PCM should be reprogrammed using the GDS download as described in this bulletin.
Notice:
Global Diagnostic System (GDS) users should access the "Notice" function from the GDS Main Screen for instructions reguarding ECU upgrade events.
Notice:
^ A fully charged battery is necessary before PCM upgrade can take place. DO NOT connect a battery charger to the vehicle during PCM upgrade. Make sure the blower motor is 'OFF' during PCM upgrade.
^ All PCM upgrades must be done with the ignition key in the 'ON' position.
^ Be careful not to disconnect any cables connected to the vehicle or GDS during the PCM upgrade procedure.
^ DO NOT start the engine during PCM upgrade.
^ DO NOT turn the ignition key 'OFF' or interrupt the power supply during PCM upgrade.
^ When the PCM upgrade is complete, turn the ignition key 'OFF' and wait 20 seconds before starting the engine.
^ ONLY use approved PCM upgrade software designated for the correct model, year and engine size. Failure to do so may create other driveability issues due to the use of the incorrect PCM calibration.
ROM ID INFORMATION TABLE
- Effective Vehicle Information
AFFECTED PRODUCTION RANGE:
2002 - 2005 model year SEDONA (GQ) 3.5L vehicles
- Service Procedure
1. Connect the power supply cable to the GDS tool.
Notice:
If attempting to perform the PCM upgrade with the power supply cable disconnected from the GDS tool, be sure to check that the GDS tool is fully charged before PCM upgrade.If the GDS tool is not fully charged, failure to perform the PCM upgrade may occur. Therefore, it is strongly recommended that the power supply connector be connected to the GDS tool.
2. Connect the USB cable between the Vehicle Communications Interface (VCI) and the GDS tool.
Notice:
When performing the PCM upgrade using the GDS tool, wireless communication between the VCI and GDS tool is not available. Therefore, be sure to connect the USB cable between the VCI and the GDS tool.
3. Connect the Main 16-pin DLC cable (GHDM - 241000) to the VCI.
4. Connect the 20-pin GRAY cable (GHDM - 244000) to the 20-pin connector located in the engine compartment.
5. With the ignition key ON, turn ON the VCI and GDS tool. Access the GDS vehicle identification number (VIN) screen and configure the vehicle using manual VIN entry.
Notice:
Global Diagnostic System (GDS) users should access the "Notice" function from the GDS Main Screen for instructions reguarding ECU upgrade events.
6. At the GDS Main Screen, select ECU UPGRADE from the menu buttons located on the bottom of the screen. Next, select Auto Mode, Engine.
7. Perform the PCM upgrade in accordance with normal GDS tool PCM upgrade procedures.
Notice:
Do NOT attempt to perform a Manual Mode PCM upgrade unless Auto Mode fails. Always follow the instructions given on the GDS tool in either Auto or Manual Mode. See table above for Manual Mode passwords.
8. When the GDS tool reports that the PCM upgrade has been successfully completed, click OK, turn OFF the ignition key, and wait at least 20 seconds before attempting to start the engine.
9. Check for Diagnostic Trouble Codes using the GDS and erase any DTCs stored in the Engine and Transaxle control modules.
10. Confirm proper shift points of A/T units after reprogramming to reduce customer complaints of excessive shift shock and improper shift points.
WARRANTY CLAIM CLAIM