SUBJECT : PCM REPROGRAMMING FOR SPARK KNOCK / DTC 0171

No: TSB-04-13-004

DATE: March, 2004

MODEL: See below

CIRCULATE TO:

[ ] GENERAL MANAGER

[X] PARTS MANAGER

[X] TECHNICIAN

[X] SERVICE ADVISOR

[X] SERVICE MANAGER

[X] WARRANTY PROCESSOR

[ ] SALES MANAGER

PURPOSE
Due to incorrect parameters in the Powertrain Control Module (PCM) software, some vehicles may experience spark knock, engine pinging, and/or MFI DTC P0171 (System Too Lean) To eliminate this condition, reprogram the PCM as described in this bulletin.

NOTE: This reprogramming procedure will also eliminate delayed shift engagement from Park to Reverse, or Park to Drive, as described in TSB-04-23-001.

AFFECTED VEHICLES
2004 Endeavor models produced before VIN 4E099341 (U.S.) or VIN 4E603536 (Canada)

PROCEDURE

BATTERY VOLTAGE (AS MEASURED AT THE BATTERY POSTS WITHOUT ELECTRICAL LOAD) MUST BE 12.4V OR HIGHER IN ORDER TO REPROGRAM THE PCM.

1.Check the underside of the hood to verify that there is no label previously installed to indicate that this TSB reprogramming has already been done.

2.Verify that the vehicle's PCM part number is listed in the table in Step 10 of this bulletin.

a.Verify whether the ROM ID is the same as the ROM ID listed in the table in Step 10. If the ROM ID is the same as or higher than the ROM ID in the table, the PCM has already been reprogrammed for this concern.

3.Use the MUT-III to erase all DTCs set in the PCM.

4.Verify that your MUT-III has the most current version of the reprogramming database:

a.Select "Special Function", then select "ECU Reprogramming."
b.Select "Database File Display". The database version is displayed in the top right corner of the screen. Make sure the database version is N04031 or greater.
c.If the database version is less than N04031, go to Step 5.
d.If the database version is N04031 or greater, go to Step 8.

5.Turn the ignition key to OFF and disconnect the MUT-III.

6.Gather the following reprogramming equipment:

-MUT-III / STV Reflash Update CD 3/04 or later
-Memory Card 128 MByte Compact Flash MB991853
-Memory Card Adapter PCMCIA MB991939
-"Engine Compartment/Control Module" Labels p/n MSSF-024G-00



7.Install Update CD 3/04 in the MUT-III laptop. Follow the CD installation instructions.

8.Transfer the reprogramming data from the laptop to the memory card .

9.Remove the memory card from the laptop and install it in the VCI. Connect the VCI to the vehicle. YOU MUST DISCONNECT THE MUT-III LAPTOP.

10.Reprogram the PCM, using automatic reprogramming. For reprogramming details, refer to TSB-03-00-015.

It will take up to 20 minutes to complete the reprogramming.

NOTE: If the message "ECU at Current Level of VCI" appears, the PCM did not reprogram. Verify that the ROM ID is the same as the ROM ID listed in the table below.
•If the ROM ID is the same as or higher than the ROM ID in the table, the PCM has been reprogrammed for this concern.
•If it is not, verify that the correct database update is in the MUT-III and was transferred to the memory card, and that the memory card is properly installed in the VCI.

DO NOT DISTURB THE HARNESS CABLES OR CONNECTIONS. INTERRUPTION DURING THE PROGRAMMING PROCESS COULD CAUSE THE PCM TO LOSE DATA OR PREVENT FUTURE PCM REPROGRAMMING.

The table below lists the PCM part numbers, ROM IDs, and corresponding vendor numbers that will display after reprogramming.

a.After reprogramming is completed, the new ENG ROM ID and new A/T ROM ID will display alternately with the message "Turn IG SW OFF" every four seconds. Note this information. Verify that the new PCM part number and ROM IDs are the same as those listed in the table below.

DISPLAY ON MUT-III SCREEN AFTER REPROGRAMMING

MODEL

PCM PART NUMBER

MUT-III REPROGRAMMING DATABASE

ECU PART NUMBER

ROM ID

VENDOR #

2004 Endeavor 2WD

MN132652

VN03121

MN132652

ENG: B87655 A/T: B64432

E6T38175L042

2004 Endeavor 4WD

MN132653

VN03122

MN132653

ENG: B88155 A/T: B64533

E6T38176L042

11.Using a ball-point pen, enter the appropriate PCM part number, vendor number, ROM ID#, this TSB number (TSB-04-13-xxx), your dealer code, and the current date on the Engine Compartment / Control Module Label (part no. MSSF-024G-00).


12.Carefully remove all dirt and oil from a vacant area near the VECI label on the underside of the hood, and affix the Engine Compartment label.

13. Affix the Control Module label to the PCM.

WARRANTY INFORMATION

PCM Reprogramming for DTC P0171

Nature Code: 06C

Cause Code: 490

Labor Operation No. 13850113

Time Allowance: 0.3 hr.

Warranty Coverage: 8 years / 80,000 miles Emissions warranty

Mitsubishi Motors North America, Inc.