Engine Controls - Engine Hesitation/Stalling When Cold: Overview
No: TSB-09-13-001Date: February, 2009
Model: 2008 Lancer
Subject:
ECM REPROGRAMMING FOR THROTTLE HESITATION AND ENGINE STALLS WHEN COLD
PURPOSE
Customers of some California specification 2008MY Lancers with CVT, may complain of a throttle hesitation or engine stalling just after a cold engine start. A parameter in the ECM for cold air-fuel ratio was set leaner when cold in order to meet strict emission regulation requirements. This setting could present itself as a throttle hesitation due to a lack of fuel injection volume when first accelerating.
This Technical Service Bulletin advises the steps to reprogram the ECM with new parameters to repair the condition.
AFFECTED VEHICLES
2008 Lancer w/CVT (CA Spec. vehicles only)
REQUIRED OPERATIONS
The following equipment is needed to reprogram the ECM.
^ VCI (Vehicle Communication Interface) - MB991824.
^ Laptop computer with A/C power adaptor - 520924, or 547708.
^ MUT-III main harness 'A' (blue connector at the DLC end) - MB991910.
^ USB 2.0 cable - MB991827.
^ "Engine Compartment/Control Module" labels - p/n MSSF024G00.
^ MEDIC-II Download at M276 or higher.
If an affected vehicle has a Malfunction Indicator Lamp (MIL) illuminated and DTCs are listed in the ECM memory (before reprogramming), follow diagnostic instructions for the applicable DTCs per the service manual information. Do not reprogram the ECM until the reason for DTCs being set is corrected.
PARTS INFORMATION
WARRANTY INFORMATION
ECM REPROGRAMMING CHART