DESCRIPTION
If the airflow from the front 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 |
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PROCEDURE
1. |
CHECK AIR CONDITIONING SYSTEM |
(a) Operate the blower switch with the following conditions met and check that the airflow volume changes.
Blower Speed | Condition |
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LO → HI |
|
OK:
Airflow volume increases.
NG | GO TO OTHER DIAGNOSIS PROCEDURE (Blower Motor Circuit) |
|
2. |
CHECK ECO MODE SETTING |
(a) Check if the ECO mode indicator is off.
OK:
The ECO mode indicator is off.
NG | GO TO STEP 4 |
|
3. |
CHECK ECO MODE CONTROL OPERATION |
(a) Operate the ECO switch assembly (air conditioning control assembly) and check that the ECO mode indicator turns off and the blower speed reduction is canceled.
HINT:
Control |
Outline |
---|---|
Blower Control |
When the air conditioning system is in AUTO mode, the blower speed will be reduced to a certain speed. Additionally, if warm-up control is operating, the blower speed will be further reduced. |
Air Inlet Control |
If the ambient temperature is a certain value or more, the air inlet mode will be changed to recirculation mode. |
Result | Proceed to |
---|---|
ECO mode indicator turns off and blower speed reduction is canceled |
A |
ECO mode indicator turns off, but the blower speed reduction is not canceled |
B |
ECO mode indicator does not turn off |
C |
B | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
C | REPLACE AIR CONDITIONING CONTROL ASSEMBLY |
|
4. |
CHECK CLEAN AIR FILTER |
(a) Visually check the clean air filter.
Click here
OK:
The clean air filter is not dirty or clogged.
NG | REPLACE CLEAN AIR FILTER |
|
5. |
CHECK NO. 1 COOLER THERMISTOR |
(a) Check the installation condition of the No. 1 cooler thermistor.
OK:
The No. 1 cooler thermistor is installed correctly.
NG | INSTALL NO. 1 COOLER THERMISTOR |
|
6. |
CHECK ASPIRATOR |
(a) Check the installation condition of the aspirator.
OK:
The aspirator is installed correctly.
OK | REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY OR NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY |
NG | INSTALL ASPIRATOR |