Toyota Corolla Cross: 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.
OK:
The No. 1 blower damper servo sub-assembly is installed correctly.
| NG |
.gif) | INSTALL NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY |
|
OK |
.gif) | |
(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 | |
| |
(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:
After warming up the engine, the temperature value displayed is within the range specified in the normal condition column.
| OK |
| REPLACE AIR CONDITIONER UNIT ASSEMBLY |
| NG |
| GO TO COOLING SYSTEM |
READ NEXT:
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Symptom Factor
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