2007–2009 Toyota Tacoma Decreased Air Volume from HVAC Vents
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Some customers may experience decreased air volume from the HVAC vents when the temperature is set to maximum heat. Use the following repair procedure to address the customer concerns. Production Change Information This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below. MODEL Tacoma DRIVETRAIN All 2WD 4WD PLANT NUMMI TMMBC PRODUCTION CHANGE EFFECTIVE VIN 5TE###2N#9Z593323 3TM#U#2N#9M070971 3TM#U#2N#9M007845 Repair Procedure 1. Remove the Air Conditioning unit. Refer to the Technical Information System (TIS), model year repair manual: • 2007 / 2008 Tacoma Vehicle Interior – Heating/Air Conditioning – “Air Conditioning Unit: Removal” 2. Remove the 4 bolts and the lower defrost nozzle assembly. 3. Remove the 2 bolts and the heater to register duct. 4. Remove the No. 1 air duct. A. Remove the bolt. B. Disengage the 3 claws and remove the air duct. 5. Remove the air inlet assembly. A. Remove the air ?lter. B. Remove the 4 bolts and 1 clip that mount the air inlet assembly. C. Remove the cooler thermistor clip from the air inlet case. Figure 5. 6. Remove the mode damper control assembly. A. Remove the 3 bolts on the mode mounting plate. B. Remove the mode damper control assembly including mode cam, mode mounting plate, and mode control servo. 7. Remove the temperature damper control assembly. A. Remove the 3 bolts on the temperature control mounting plate. B. Remove the temperature damper control assembly including temperature control cam, mounting plate, and servo. Figure 9. 8. Remove the bolt and the heater pivot. 9. Remove the mode case. A. Remove the 11 bolts and 1 clip that mount the mode case. Figure 12. 10. Remove the evaporator core. Figure 13. 11. Remove the top half of the HVAC main case. A. Remove the torx bolt and heater pipe clamp. B. Remove the 2 clips and 15 bolts that mount the top half of the case. Figure 14. 12. Disengage and remove the heater air damper door from the HVAC main case. Figure 16.
Some customers may experience decreased air volume from the HVAC vents when the temperature is set to maximum heat. Use the following repair procedure to address the customer concerns. Production Change Information This TSB applies to vehicles produced BEFORE the Production Change Effective VINs shown below. MODEL Tacoma DRIVETRAIN All 2WD 4WD PLANT NUMMI TMMBC PRODUCTION CHANGE EFFECTIVE VIN 5TE###2N#9Z593323 3TM#U#2N#9M070971 3TM#U#2N#9M007845 Repair Procedure 1. Remove the Air Conditioning unit. Refer to the Technical Information System (TIS), model year repair manual: • 2007 / 2008 Tacoma Vehicle Interior – Heating/Air Conditioning – “Air Conditioning Unit: Removal” 2. Remove the 4 bolts and the lower defrost nozzle assembly. 3. Remove the 2 bolts and the heater to register duct. 4. Remove the No. 1 air duct. A. Remove the bolt. B. Disengage the 3 claws and remove the air duct. 5. Remove the air inlet assembly. A. Remove the air ?lter. B. Remove the 4 bolts and 1 clip that mount the air inlet assembly. C. Remove the cooler thermistor clip from the air inlet case. Figure 5. 6. Remove the mode damper control assembly. A. Remove the 3 bolts on the mode mounting plate. B. Remove the mode damper control assembly including mode cam, mode mounting plate, and mode control servo. 7. Remove the temperature damper control assembly. A. Remove the 3 bolts on the temperature control mounting plate. B. Remove the temperature damper control assembly including temperature control cam, mounting plate, and servo. Figure 9. 8. Remove the bolt and the heater pivot. 9. Remove the mode case. A. Remove the 11 bolts and 1 clip that mount the mode case. Figure 12. 10. Remove the evaporator core. Figure 13. 11. Remove the top half of the HVAC main case. A. Remove the torx bolt and heater pipe clamp. B. Remove the 2 clips and 15 bolts that mount the top half of the case. Figure 14. 12. Disengage and remove the heater air damper door from the HVAC main case. Figure 16.
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