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1、TSBIntroductionA 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
2、 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 c
3、onditioning 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 given on page 2, and the model specific procedure on the pages indicated in the Table of Contents at t
4、he bottom of this page.Affected? While this procedure may be used on any Toyota vehicle, this bulletin gives details Vehiclesspecifically for the AE100 Corolla, SXV/VCV10 Camry, MCX10 Avalon, MX83 Cressida, AT180/200 Celica, ST184/204 Celica, JZA80 Supra, EL42/44/53 Tercel/ Paseo, TCR10/20 Previa, F
5、ZJ80 Land Cruiser series as well as recent production Truck, Tacoma, T100, 4Runner and MR2 models.Tools & MaterialsCAUTION: Wear safety glasses, protective mask, and gloves while working with the freshener.Table of ContentsHEATING & AIR CONDITIONINGMay 9, 1997Title: AIR CONDITIONING EVAPORATOR ODORM
6、odels: All ModelsPage 1 of 9AC00297PART NUMBERDESCRIPTION OF TOOLS & MATERIALS QUANTITYSOURCE088210081001Spray Gun Kit1OTC088210081101Spray Gun (replacement)(1)OTC088210081201Spray Gun Nozzle (replacement)(1)OTC088210081301Freshener Mixing Container (replacement)(1)OTC0882100801DS Air Conditioning F
7、reshener1 per vehicleTMSMODELPAGEMODELPAGEMODELPAGEMODELPAGEGeneral2Cressida6Tercel84Runner9Camry3Celica7Paseo8Truck9Corolla4Supra7MR29Tacoma9Avalon6Previa 8Land Cruiser9T1009General Procedure applies to all models and model years. The Specific Model Sections cover only the most recent models.AIR CO
8、NDITIONING EVAPORATOR ODOR AC00297May 9, 1997General1. Preparation of freshener solution: Procedure (a)Invert freshener container and shake vigorously for 30 seconds. (b)Mix 3.4 fl. oz. of freshener (1 container) with 30 fl. oz. to make 1 qt. of solution.2. Drying the evaporator: ?Dry the evaporator
9、 for 10 minutes with the following settings: AC:Off. . . . . . . . . . . Air Outlet:Foot. . . . . Mode:Recirc. . . . . . . . . Blower:High. . . . . . . Temp:Max Warm. . . . . . . . . 3. Evaporator Treatment Preparation:(a)Ensure availability of 3045 psi compressed air to be used with spray gun for a
10、pplication of freshener. (b)Place a tray under the evaporator housing drain hose to collect used cleaning solution. (c)Place shop cloth under the evaporator housing in the vehicle to prevent cleaning solution from dripping onto the floor mat.4. Vehicle Preparation: See specific model section.5. Evap
11、orator treatment:(a)Set HVAC mode as follows: AC:Off. . . . . . . . . . . Air Outlet:Face. . . . . Mode:Fresh. . . . . . . . . Blower:High. . . . . . . Temp:Max Warm. . . . . . . . . Windows:Open. . . . . (b)Insert spray nozzle into the filter inlet and spray the entire quantity (1 qt.) of freshener
12、 solution into the evaporator while moving the nozzle around to cover the complete evaporator surface. (c)Turn the blower OFF.6. Reinstallation of Parts.7. Completion of Treatment.(a)Dry the evaporator for 30 minutes with the following settings: AC:Off. . . . . . . . . . . Air Outlet:Foot. . . . . M
13、ode:Recirc. . . . . . . . . Blower:High. . . . . . . Temp:Max Warm. . . . . . . . . Windows:Closed. . . . . (b)If vehicle still has alcohol smell, open windows for ventilation. Do not turn on the AC switch until the evaporator is completely dry as this can reduce the effectiveness of the solution.Pa
14、ge 2 of 9CAUTION Do not get into the vehicle during this drying operation.Cooling UnitEvaporatorFilter InletNozzleSpray GunMixing ContainerPage 3 of 9AIR CONDITONING EVAPORATOR ODOR AC00297May 9, 1997Camry1. Removal of parts.(SXV/VCV10)(a)Pull down the carpet from the center console as indicated by
15、red arrow in the illustration.(b)Remove the plate on the side of the heater unit using steps and, indicated with red arrows to show direction, in the illustration.CAUTION: 1. Do not bend the cable. 2. The plate will be reused.(c)Remove the blower resistor.2. Cleaning the Evaporator.? Follow the gene
16、ral procedures given on page 2.3. Reinstallation of parts.(a)Reinstall the plate on the side of the heater unit using steps and, indicated with red arrows to show direction, in the illustration.CAUTION: Confirm that the plate is secure.(b)Restore the carpet to its original position taking care not to bend the cable.CarpetPULL THE KNOBPULL THE PLATEPlateKnobCableHeater UnitINSERT THE SPRAY NOZZLEHeater UnitPUSH THE KNOBSLIDE INTO UNITH
