Engine Controls - MIL ON/DTC P0133 Set: Overview

No: TSB-10-13-012

DATE: November, 2010

MODEL: See below

SUBJECT:
ECM REPROGRAMMING FOR DTC P0133 AND/OR ENGINE IDLE HUNTING

PURPOSE

Due to incorrect programming, some affected vehicles may exhibit MIL illumination with DTC P0133 recorded in ECM memory. In some cases, engine idle may not stabilize when the A/C cycles or the engine is revved.

This TSB describes an ECM reprogramming procedure to correct this condition. The 02 sensor may not be defective and should not be replaced unless the symptoms return after reprogramming is completed, the vehicle is test driven, and further DTC P0133 diagnosis is performed.

IMPORTANT:
If an affected vehicle has a Malfunction Indicator Lamp (MIL) illuminated and DTCs other than described above are listed in the ECM memory (before reprogramming), diagnose and repair those DTCs per the service manual before proceeding with reprogramming. DO NOT reprogram the ECM until the reason for other DTCs being set is corrected.

AFFECTED VEHICLES
2008-2009 Lancer Evolution
2009 Lancer and Lancer Sportback with turbocharged engine

REQUIRED OPERATIONS

The following equipment is needed to reprogram the ECM.

^ MEDIC laptop computer with A/C power adaptor - 520924, or MIT547708.

^ VCI (Vehicle Communication Interface) - MB991824.

^ MUT-III main harness 'A' (blue DLC connector) - MB991910.

^ USB 2.0 cable - MB991827.

^ "Engine Compartment/Control Module" label - p/n MSSF024G00.

^ MEDIC-II Download at M402 or higher.

^ For Standalone MUT-III laptops, reprogramming CD 11/10








ECM REPROGRAMMING CHART





PART(S) INFORMATION





WARRANTY INFORMATION