Canada - A/C - Dust Or Powder Blows From A/C Vents

Bulletin
T-TCI-3697

Issue Date
January 16, 2012

Market
Canada

Title
DUST FROM HVAC VENTS

Service Category
Vehicle Interior

Section
Heating/Air Conditioning

Market
Canada






APPLICABILITY:

TSB SUPERSESSION NOTICE

The information contained in this TSB supersedes TSB No. T-TCI-3008.
- Applicability has been updated to include 2010 - 2011 model year Avalon, and 2011 model year Camry and Camry HV vehicles.
- Production Change Information, Warranty Information, Parts Information, and Repair Procedure sections have all been updated.

TSB No. T-TCI-3008 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before proceeding.

INTRODUCTION:

Some vehicles may exhibit a condition where dust or powder is visible from the HVAC vents. A newly designed evaporator and HVAC system cleaning procedure has been developed to address this condition. The procedure listed below details evaporator removal, HVAC system cleaning, blower motor cleaning, and installation.






PARTS INFORMATION

PRODUCTION CHANGE INFORMATION:

This TSB applies to:
- All 2006 - 2011 MY Avalon vehicles.
- All 2007 - 2011 MY North American produced Camry and Camry HV vehicles.
- All 2007 - 2011 MY Japan produced Camry HV vehicles.







- 2007 - 2011 MY Japan produced Camry vehicles manufactured BEFORE the Production Change Effective VINs shown.






WARRANTY INFORMATION:






REQUIRED TOOLS & EQUIPMENT

NOTE
Additional SSTs may be ordered by calling SPX/OTC at 1-800-933-8335.

REPAIR PROCEDURE

1. Confirm the condition.

Check for white dust or powder on the top of the instrument panel and interior surfaces.

If white dust or debris is present, check the cabin air filter for damage and for other external sources of debris. Proceed to step 2 for evaporator replacement if no external debris sources are found.

2. Remove the evaporator.

Refer to ETAS/TIS Library, applicable model and model year Repair Manual:
Vehicle Interior - Heating/Air Conditioning - "Air Conditioning: Air Conditioning Unit:
- 2006 / 2007 / 2008 / 2009 / 2010 /2011 Avalon: Removal / Disassembly"
- 2007 / 2008 / 2009 / 2010 / 2011 Camry: Removal / Disassembly"
- 2007 / 2008 / 2009 / 2010 / 2011 Camry HV (TMC): Removal / Disassembly"
- 2007 / 2008 / 2009 / 2010 / 2011 Camry HV (TMMK): Removal / Disassembly"

3. Remove the HVAC ducts and registers from the dash pad.












4. Remove the center console ducts from the center console.







5. Verify all HVAC ducts and registers have been removed.







6. Blow out ALL the HVAC ducts with shop air.
7. Wipe out ALL the HVAC ducts with a damp shop rag.
8. Visually inspect the HVAC ducts and verify all of the dust has been removed. If additional dust is discovered, repeat steps 6 and 7 until the dust has been completely removed.







9. Clean the HVAC registers by blowing the registers out with shop air.

NOTE
If dust remains it may be necessary to clean in-between the vent fins with a small soft brush.







10. Clean the side window defroster vents by blowing them out with shop air as shown.
11. Disassemble the HVAC case and remove the evaporator. If the HVAC case was not previously disassembled and the evaporator removed, refer to the disassembly procedure in step 2.







12. Remove the heater core and blow out with shop air.







13. Blow out the evaporator tray with shop air. If there is still dust on the tray, use a small brush or damp shop rag to clean the tray.







14. Clean the thermistor with shop air.

NOTE
Do NOT remove the blend doors from the servo motors.

15. Use compressed air to blow out the evaporator case.
16. Wipe the evaporator case with a damp shop rag.







17. Clean the evaporator cover with a soft brush or damp shop rag.







18. Wipe out the blower motor housing with a damp shop rag.

NOTE
It is critical to completely clean the blower motor housing as it may contain copper particles that can damage the protective coating on the evaporator.







19. Use shop air and blow in-between the fan and the blower motor housing.
20. Install the NEW evaporator.

Refer to ETAS/TIS Library, applicable model and model year Repair Manual:
Vehicle Interior - Heating/Air Conditioning - "Air Conditioning: Air Conditioning Unit:
- 2006 / 2007 / 2008 / 2009 / 2010 / 2011 Avalon: Reassembly / Installation"
- 2007 / 2008 / 2009 / 2010 / 2011 Camry: Reassembly / Installation"
- 2007 / 2008 / 2009 / 2010 / 2011 Camry HV (TMC): Reassembly / Installation"
- 2007 / 2008 / 2009 / 2010 / 2011 Camry HV (TMMK): Reassembly / Installation"







21. Remove the dust cover on the back of the blower motor.







22. Use shop air and blow dust out of the blower motor commutator, brushes and windings.
23. Reassemble the blower motor assembly.
24. After repair, confirm proper operation of the HVAC controls, and cooling and heater functions.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.