Emissions - Air Injection Air Switching Valve Diagnosis

T-SB-0158-12

August 28, 2012

IGR-FE Air Injection Switching Valve Diagnosis

Service Category
Engine/Hybrid System

Section
Engine Control

Market
USA

Applicability

Introduction

This bulletin provides diagnostic information for 2012 model year Tacoma vehicles equipped with the 1GR-FE (4.0 L) engine regarding the secondary air injection system's air switching valve (ASV).

For the subject vehicles, the main engine harness is incorrectly configured. Use the following troubleshooting procedures in this bulletin to ensure proper diagnosis and repair.

Production Change Information

This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs shown.

Warranty Information

Required Tools & Equipment