Engine - Brief Rattle/Knock On Cold Start Up
T-SB-0087-09
Rev1
March 13, 2009
Brief Engine Knock/Rattle Noise at Cold Startup
Service Category
Engine/Hybrid System
Section
2010 Toyota Corolla L4-1.8L (2ZR-FE) Page 145
Engine Mechanical
Market
USA
Applicability
TSB REVISION NOTICE
^ September 22, 2009 Rev1:
^ Applicability has been updated to include 2010 model year Corolla and Matrix vehicles.
^ Production Change Information with VIN breaks has been added.
^ Parts Information has been updated (Camshaft Timing Gear Assembly).
Any previous printed versions of this service bulletin should be discarded.
Introduction
Immediately following a cold soak startup some 2009 - 2010 model year Corolla and Matrix vehicles may exhibit a brief knock/rattle noise from the
engine compartment for approximately one second. Follow the repair procedure below to address this condition.
Production Change Information
This TSB applies to ALL 2009 - 2010 Japan-built Corolla vehicles and to North American vehicles produced BEFORE the Production
Change Effective VINs shown.
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for 60 months or 60,000 miles, whichever occurs first,
from the vehicle's in-service date.
^ Warranty application is limited to occurrence of the specified condition described in this bulletin.
2010 Toyota Corolla L4-1.8L (2ZR-FE) Page 146
Parts Information
Required Tools & Equipment
Repair Procedure
Confirm the customer complaint. See video for an example of the engine knock/rattle noise: Engine Knock/Rattle Noise Example
1. If a knock/rattle noise is present replace the camshaft timing gear assembly.
HINT
This repair is simplified by performing the following:
^ DO NOT remove the engine - complete the repair in the vehicle.
^ Set No.1 cylinder to TDC/compression.
^ DO NOT remove the timing cover or camshaft housing sub-assembly.
^ Loosen and remove all camshaft bearing caps. Remove the No.1 camshaft bearing cap and No.2 timing chain vibration damper as an assembly -
DO NOT separate.
^ Remove the intake camshaft with the camshaft gear intact and tie the timing chain to keep tension on the crankshaft timing gear; avoiding
separation.
^ Ensure the new camshaft gear is unlocked (advanced position) prior to installation and lock the gear (fully retarded position) AFTER tightening to
proper torque.
2010 Toyota Corolla L4-1.8L (2ZR-FE) Page 147
Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:
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