Montero Sport XS 2WD V6-3.5L SOHC (2001)
Technical Service Bulletin # 03-13-001
Date: 030101
Engine Controls - MIL ON/DTC P0125 Set
No.: TSB-03-13-001
DATE: January, 2003
MODEL: See below
SUBJECT:
PCM REPROGRAMMING FOR MIL ON/DTC P0125
PURPOSE
Incorrect PCM software parameters may cause the MIL ("SERVICE ENGINE SOON") light to come on and Diagnostic Trouble Code P0125 to set.
This typically occurs with no driveability concerns. To eliminate this condition, reprogram the PCM as described in this bulletin.
For only 2001 Montero vehicles, replace the oxygen sensors after reprogramming the PCM. (See Step 19 in this bulletin.)
AFFECTED VEHICLES
2001-2002 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 to indicate that this TSB reprogramming has already been done.
NOTE:
On 2002 models, adapter tool MB991855 must be connected to the MUT-II scan tool as shown.
2.
Record any DTCs and freeze frame data set in the PCM. Then use the MUT-II to erase all DTCs.
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 -->.
