1993 – 2008 Applicable Models ENGINE BANK 1 AND BANK 2 A/F AND O2 IDENTIFICATION

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Filed Under (Toyota Manuals) by admin on 25-10-2011

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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

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