Toyota Yaris: Air Conditioning System / Recirculated/Fresh Air Modes do not Switch
DESCRIPTION
If the air inlet mode cannot be changed between recirculation/fresh or exhaust gas odors can be smelled even though recirculation mode is selected, the following factors may be the cause.
Symptom | Factor |
-
Air inlet mode cannot be changed between recirculation/fresh
-
Exhaust gas odors can be smelled when air inlet mode set to recirculation mode
| -
No. 1 blower damper servo sub-assembly malfunction
-
Damper link disconnection
-
Air inlet damper mechanically locked
-
Engine coolant temperature (high)
-
Air conditioner unit assembly malfunction
|
PROCEDURE
1. | CHECK NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY |
(a) Check that the No. 1 blower damper servo sub-assembly is installed correctly.
Click here
OK:
The No. 1 blower damper servo sub-assembly is installed correctly.
NG |
| INSTALL NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY |
OK |
| |
(a) Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
Result | Proceed to |
B143A87 and B143B7F is not output | A |
B143A87 is output | B |
B143B7F is output | C |
B |
| GO TO DTC B143A87 |
C |
| GO TO DTC B143B7F |
A |
| |
3. | READ VALUE USING GTS (COOLANT TEMPERATURE) |
(a) Read the Data List according to the display on the GTS.
Powertrain > Engine > Data List
Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
Coolant Temperature | Engine coolant temperature | Min.: -40°C (-40°F), Max.: 140°C (284°F) | 75 to 100°C (167 to 212°F): After warming up | This is the engine coolant temperature. HINT: -
After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).
-
After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.
-
If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.
-
Check if the engine overheats if the value indicated is higher than 135°C (275°F).
|
Powertrain > Engine > Data List
Tester Display |
Coolant Temperature |
OK:
The value of the display does not change frequently.
OK |
| REPAIR OR REPLACE AIR CONDITIONER UNIT ASSEMBLY |
NG |
| GO TO COOLING SYSTEM |
DESCRIPTION If recirculation/fresh mode changes unintentionally and without permission, the following causes are possible. Symptom Factor
Recirculation/fresh mode changes without permission
Recirculation/fresh mode light blinks
Customize setting
Change in ambient air temperature
Decrease in refrigerant pressure
Air conditioner pressure sensor circuit malfunction
Engine coolant temperature (high)
PROCEDURE 1...
DESCRIPTION If warm air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause...
Other information:
INSPECTION PROCEDURE 1. INSPECT REAR SEAT OUTER BELT ASSEMBLY (a) Before installing the rear seat outer belt assembly, check the ELR function. NOTICE: Do not disassemble the retractor. (1) When the inclination of the retractor is 12° or less, check that the belt can be pulled from the retractor...
When returning a rear seat to its original position, place the seat belt in
its normal position. Verify that the seat belt pulls out and retracts.
WARNING
Make sure the adjustable components of a seat are locked in place
Adjustable seats and seatbacks that are not securely locked are
dangerous...
Categories
Smart key
Auxiliary key
Key code number plate
To use the auxiliary key, press the knob and pull out the auxiliary key
from the smart key.
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