A/C - Evaporator Odor: Overview

HEATING & AIR CONDITIONING
AC002-97

May 9, 1997

Title:
AIR CONDITIONING EVAPORATOR ODOR

Models:
All Models

Introduction
A musty odor may be emitted from the air conditioning system of some vehicles which are usually operated in areas with high temperature and humidity. It is most noticeable when the air conditioner is first turned "ON" after the vehicle has been parked for several hours. The odor could result from one or more of the following conditions:

1. Blockage of the evaporator housing drain pipe, resulting in the build up of condensate.

2. Microbial growth in the evaporator, arising from dampness in the evaporator housing where the cooling air flow is dehumidified.

To address excessive air conditioning evaporator odor, check the evaporator housing drain pipe for blockage. If no problems are found, the evaporator and housing should be cleaned and disinfected using the general procedure, and the model specific procedure on the pages indicated in the Table of Contents.

Affected Vehicles
^ While this procedure may be used on any Toyota vehicle, this bulletin gives details Vehicles specifically for the AE100 Corolla, SXV/VCV1O Camry, MCX10 Avalon, MX83 Cressida, AT18O/2O0 Celica, ST184/2O4 Celica, JZA8O Supra, EL42/44/53 Tercel/Paseo, TCR10/20 Previa, FZJ8O Land Cruiser series as well as recent production Truck, Tacoma, T100, 4Runner and MR2 models.





Tools & Materials

CAUTION:
Wear safety glasses, protective mask, and gloves while working with the freshener.





Table of Contents