toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

A/C - Poor Heater Performance When Cold|Page 3547 > < Electronic Throttle Actuator|Locations|Page 3538
Page 1
background image

Engine Control Module: Customer Interest
A/C - Poor Heater Performance When Cold

T-SB-0231-10

August 5, 2010

Heater Performance
Service Category

Engine/Hybrid System
Engine Control

Market
USA

Applicability

Introduction

Some 2008 model year Sequoia and 2007 - 2008 model year Tundra vehicles may exhibit reduced cold-start heater warm-up performance in cold
conditions. A newly designed Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic is available to address this condition.
Use the following repair procedure to recalibrate the ECM (PCM).

Warranty Information

APPLICABLE WARRANTY

^

This repair is covered under the Toyota Federal Emission Warranty. This warranty is in effect for 96 months or 80,000 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.

Production Change Information

A/C - Poor Heater Performance When Cold|Page 3547 > < Electronic Throttle Actuator|Locations|Page 3538