Matrix XRS 2WD L4-1.8L (2ZZ-GE) (2003)
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PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Idle Hunting in Sub-Freezing Temps.
ENGINE
EG022-07
Title:
"IDLE HUNTING" IN SUB-FREEZING
AMBIENT AIR TEMPERATURES
Models:
'03-'04 Corolla & Matrix (MTM)
April 18, 2007
Introduction
Some 2003 - 2004 model year Corolla and Matrix vehicles may exhibit an "idle hunting" condition after the vehicle has been cold soaked in sub-freezing
ambient air temperatures. During this condition the engine idle will "hunt" or fluctuate instead of maintaining a constant fast idle speed. The Engine
Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to correct this condition.
Applicable Vehicles
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2003 - 2004 model year Corolla and Matrix (2WD) vehicles equipped with manual transmission.
Parts Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first,
from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
