ENGINE
EG034-07

Title:
ENGINE BANK 1 AND BANK 2 A/F AND
O2 IDENTIFICATION

Models:
'93 - '08 Applicable Models

June 28, 2007

The information contained in this TSB supercedes TSB No. EG037-04. TSB No. EG037-04 is now obsolete and should be discarded.

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, 2GR-FSE, 2JZ-GE, 1MZ-FE, 3MZ-FE, 1UR-FSE, 3UR-FE, 2UZ-FE, 3UZ-FE, 5VZ-FE, and 1ZZ-FE.

^ Bank 1 (B1) refers to the bank that includes cylinder No. 1.

^ Bank 2 (B2) refers to the bank opposite bank 1.

^ Sensor 1 (S1) refers to the sensor that is located before the catalytic converters.

^ Sensor 2 (S2) refers to the sensor that is located after the catalytic converters.








Warranty Information












Applicable Vehicles

















Engine Bank Identification







A/F and 02 Sensor Identification