Service manual

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FILE UNDER:
Group 13 Fuel in the Dealer Service Information Binder (2552)
SUBJECT :
PCM REPROGRAMMING FOR
No: TSB–03–13–003
PCM REPROGRAMMING FOR
DTC P0133 AND P0154
DATE: February, 2003
DTC P0133 AND P0154
MODEL: 2001–02 Diamante
CIRCULATE TO: [ ] GENERAL MANAGER [X] PARTS MANAGER [X] TECHNICIAN
[X] SERVICE ADVISOR [X] SERVICE MANAGER [X] WARRANTY PROCESSOR [ ] SALES MANAGER
PURPOSE
Incorrect PCM software parameters may cause the MIL (“SERVICE ENGINE SOON” light) to come on
and Diagnostic Trouble Code P0133 or P0154 to set. To eliminate this condition, reprogram the PCM
as described in this bulletin.
AFFECTED VEHICLES
2001–02 Diamante
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 to indicate that this TSB
reprogramming has already been done.
2. Using the MUT–II scan tool, check to see if any DTCs are set in the PCM. If any DTC is set, follow
the appropriate DTC troubleshooting and repair instructions in the service manual.
3. Use the MUT–II to read the ECU part number as described below, then refer to Attachment A to
determine the appropriate ROM pack database number.
a. With the MUT–II connected, turn the ignition key to ON.
b. At the MAIN MENU, select “1. System Select” and press Yes.
c. Select “MFI” and press Yes.
d. Select “Mitsubishi MFI” and press Yes.
e. At the OBD–II check code screen, press Yes.
f. At the Readiness Tests status screen, press Yes.
g. At the MFI Main Menu screen, press S.
h. At the Check Code screen, press the right arrow
"
.
i. The ECU part number and ROM ID will display. Note the part number and refer to the table in
Attachment A of this bulletin to select the appropriate ROM pack database.
4. Disconnect the MUT–II and turn the ignition key to OFF.
CAUTION

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