Tacoma PreRunner Dbl Cab 2WD V6-3.4L (5VZ-FE) (2001)
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Oxygen Sensor: Technical Service Bulletins
Engine Controls - A/F And O2 Sensor Identification
T-SB-0398-09
December 23, 2009
Engine Bank 1 and Bank 2 A/F and 02 Identification
Service Category
Engine/Hybrid System
Section
Engine Control
Market
USA
Applicability
TSB SUPERSESSION NOTICE
The information contained in this TSB supersedes TSB No. EG034-07.
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Applicability has been updated to include 2009 - 2010 model year vehicles and 2006 - 2010 model year Highlander HV.
TSB No. EG034-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before
proceeding.
Introduction
This service bulletin provides information on the proper identification of engine bank 1 and engine bank 2 for correct A/F sensor and oxygen sensor
replacement.
This bulletin contains information that identifies engine bank 1 and engine bank 2 on the following engines:
1AZ-FE, 2AZ-FE, 2AZ-FE (PZEV), 1GR-FE, 2GR-FE, 2JZ-GE, 1MZ-FE, 3MZ-FE, 1UR-FE, 3UR-FE, 2UZ-FE 5VZ-FE and 1ZZ-FE.
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Bank 1 (B1) refers to the bank that includes cylinder No. 1.
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Bank 2 (B2) refers to the bank opposite bank 1.
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Sensor 1 (S1) refers to the sensor that is located before the catalytic converters.
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Sensor 2 (S2) refers to the sensor that is located after the catalytic converters.
Warranty Information
