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Pcm Reprogramming For DTC P0125 (TSB-04-13-011)

Publication date: 2004-10-18
Reference number: TSB-04-13-011

PCM REPROGRAMMING FOR DTC P0125

PCM REPROGRAMMING FOR DTC P0125

TECHNICAL SERVICE BULLETIN

Reference Number(s): TSB-04-13-011, Date of Issue:  October, 2004
MITSUBISHI: 2001-2004 Montero
GROUP: 13 - Fuel

PURPOSE

Incorrect PCM software parameters may cause Diagnostic Trouble Code P0125 to set when the vehicle is driven in cold ambient temperatures. To eliminate this condition, reprogram the PCM as described in this bulletin.

AFFECTED VEHICLES

2001-04 Montero

PROCEDURE

CAUTION: 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 9.
    1. Verify whether the ROM ID is the same as the ROM ID listed in the table in Step 9. 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:
    1. Select "Special Function", then select "ECU Reprogramming."
    2. Select "Database File Display". The database version is displayed in the top right corner of the screen. Make sure the database version is N04101 or greater.
    3. If the database version is less than N04101, install the latest reflash database. Then go to Step 5.
    4. If the database version is N04101 or greater, go to Step 7.
  5. Turn the ignition key to OFF and disconnect the MUT-III.
  6. Gather the following reprogramming equipment:
    • Memory Card 128 MByte Compact Flash MB991853
    • Memory Card Adapter PCMCIA MB991939
    • VCI unit MB991824
    • MUT-III main harness A MB991910 (blue)
    • "Engine Compartment/Control Module" Labels p/n MSSF-024G-00
    Fig 1: Reprogramming PCM
    G00410361
  7. Transfer the reprogramming data from the laptop to the memory card.
  8. 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.
  9. Select "1 Automatic rpg." 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.
    CAUTION: 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 and ROM ID's that will display after reprogramming.

    1. 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 p/n and ROM ID's are the same as those listed in the table below.
    ROM ID INFORMATION

    Model PCM P/N MUT-III Reprogramming Database Display on MUT-III After Reprogramming Vendor #
    ECM P/N ROM ID
    2004 Montero MN153500 VN04079 MN153500 Eng: B50015
    A/T: B93303    		 E6T38377W020
    2003 Montero MN132637 VN04077 MN132637 Eng: B91843
    A/T: B73212    		 E6T38374L130
    2003 Montero MN132636 VN04076 MN132636 Eng: B14943
    A/T: B73308    		 E6T38373L130
    2002 Montero sold in Puerto Rico MR578464 VN04075 MR578464 Eng: B99210
    A/T: B62602    		 E6T36378H30
    2002 Montero MR578176 VN04074 MR578176 Eng: B88216
    A/T: B55705    		 E6T36377H30
    2001 Montero sold in Puerto Rico MR514089 VN04073 MR514089 Eng: 872320
    A/T: 840806    		 E2T79392H84
    2001 Montero sold in Puerto Rico MR507700 VN04072 MR507700 Eng: 865420
    A/T: 836911    		 E2T79382H84
    2001 Montero MR507699 VN04071 MR507699 Eng: 856221
    A/T: 828217    		 E2T79381H95
  10. Using a ball-point pen, enter the appropriate PCM part number, vendor number, ROM ID#, this TSB number (TSB-04-13-011), your dealer code, and the current date on the Engine Compartment / Control Module Label (part no. MSSF-024G-00).
    Fig 2: Engine Compartment Label & Control Module Label
    G00285719
  11. 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.
  12. Affix the Control Module label to the PCM.
  13. For 3.8L engine models only:

    Re-initialize the ETV by turning the ignition switch to the ON position (do not start engine), then turning it off. Keep it off for at least 10 seconds before starting the engine.

WARRANTY INFORMATION

PCM Reprogramming for DTC P0125

  1. Nature Code: 16D
  2. Cause Code: 490
  3. Labor Operation No. 13850113
  4. Time Allowance: 0.3 hr.
  5. Warranty Coverage: 8 years / 80,000 miles Emissions warranty
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