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Weak Blower Output [12/2019 - 10/2022]: Description

If the airflow from the registers is weak regardless of the blower speed setting displayed on the air conditioning control assembly, the following factors may be the cause.

Symptom Factor
  • Airflow volume is constantly low
  • Airflow volume sometimes becomes low
 for Front air conditioning unit: 
  • ECO mode control of air conditioning system is enabled
  • Blower motor with fan sub-assembly malfunction
  • Clogged clean air filter
  • Clogged No. 1 cooler evaporator sub-assembly or heater radiator unit sub-assembly fins
  • Evaporator temp. sensor (No. 1 cooler thermistor) not connected properly
  • Aspirator pipe not connected properly

for Rear air conditioning unit: 

  • ECO mode control of air conditioning system is enabled
  • Rear blower motor with fan sub-assembly malfunction
  • Clogged rear evaporator sub-assembly
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