Engine - Ticking Noises/MIL ON/Multiple VVTi DTC's Set
L-SB-0028-09Rev2
March 19, 2009
Engine Ticking Noise and/or MIL "ON" P0014, P0015, P0024, P0025, P0017, or P0018
Service Category
Engine/Hybrid System
Section
Engine Mechanical
Market
USA
Applicability
TSB REVISION NOTICE
April 15, 2010 Rev2:
^ Warranty Information has been updated (Combo C).
^ Parts Information has been updated (Oil Filter Element Kit).
June 15, 2009 Rev1:
^ An important statement has been added to the Introduction - PLEASE READ.
^ Applicability, Warranty Information, and Repair Procedure sections have been updated to include 2010 model year RX 350.
^ Production Change Information with VIN breaks has been added.
^ Parts Information has been updated.
Any previous printed versions of this service bulletin should be discarded.
Introduction
It is mandatory that the VVT-i gear actuator bolts, actuator center section alignment, and actuator body be inspected BEFORE performing this TSIB. If no concerns are noted with these parts, this TSIB does NOT apply.
Some 2007 - 2009 model year ES 350 and 2007 - 2010 model year RX 350 vehicles may exhibit a ticking/clicking type noise from the cylinder head cover area that may be accompanied by a MIL "ON" and one or more VVT-i related Diagnostic Trouble Codes (DTCs). Please use the following repair procedure to address customer concerns.
Production Change Information
This TSIB applies to vehicles produced BEFORE the Production Change Effective VINs shown.
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Lexus Powertrain Warranty. This warranty is in effect for 72 months or 70,000 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.
Parts Information
Required Tools & Equipment
Inspection Procedure
1. Start the engine and listen for any ticking/clicking type noises coming from the VVT-i gear area of the engine.
NOTE
This condition may or may not be accompanied by one or more of the following DTCs stored in the Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM):
^ P0014: Camshaft Position "B" - Timing Advanced or System Performance (Bank 1)
^ P0015: Camshaft Position "B" Timing Over Retarded (Bank 1)
^ P0017: Crankshaft Position Camshaft Position Correlation (Bank / Sensor B)
^ P0018: Crankshaft Position Camshaft Position Correlation (Bank 2 Sensor A)
^ P0024: Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 2)
^ P0025: Camshaft Position "B" - Timing Over-Retarded (Bank 2)
2. Remove the cylinder head cover and inspect the exhaust VVT-i gear assembly on the affected cylinder bank.
NOTE
If NO concerns are found with the WT-i gear actuator bolts, the actuator center section alignment, or actuator body, this TSIB does NOT apply. Refer to Repair Manual procedures for further diagnosis.
Repair Procedure
1. If any concerns are noted with the Exhaust VVT-i gear bolts or actuator follow the four steps below:
A. Replace the camshaft housing sub-assembly exhaust camshaft and exhaust VVT-i gear assembly on the affected bank.
B. Inspect the intake VVT-i gear assembly and bolts on the affected bank. Replace the Intake VVT-i gear assembly if necessary.
C. Inspect the opposite bank exhaust VVT-i gear actuator and bolts. If any concerns are noted replace the opposite bank camshaft housing sub-assembly exhaust camshaft and exhaust VVT-i gear assembly.
D. Inspect the opposite bank intake VVT-i gear actuator assembly and bolts. Replace the intake VVT-i gear assembly if necessary.
For complete disassembly procedures refer to the Technical Information System (TIS) applicable model and model year Repair Manual:
^ 2007 / 2008 / 2009 ES 350 Engine/Hybrid System - Engine Mechanical - "2GR-FE Engine Mechanical: Engine Unit: Disassembly"
^ 2007 / 2008 / 2009 / 2010 RX 350 Engine/Hybrid System - Engine Mechanical - "2GR-FE Engine Mechanical: Engine Unit: Disassembly"
For complete reassembly procedures refer to TIS applicable model and model year Repair Manual:
^ 2007 / 2008 / 2009 ES 350 Engine/Hybrid System - Engine Mechanical - "2GR-FE Engine Mechanical: Engine Unit: Reassembly"
^ 2007 / 2008 / 2009 / 2010 RX 350 Engine/Hybrid System - Engine Mechanical - "2GR-FE Engine Mechanical: Engine Unit: Reassembly"
2. Start the engine and test drive to verify the repair.