Toyota Corolla Cross: Recirculated/Fresh Air Modes Switch without User Input
DESCRIPTION
If recirculation/fresh mode changes unintentionally and without permission, the following causes are possible.
|
Symptom | Factor |
|---|---|
|
|
PROCEDURE
| 1. |
READ VALUE USING GTS |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Air Conditioner > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Ambient Temperature Sensor |
Thermistor assembly | Min.: -327.68°C (-557.82°F) Max.: 327.67°C (621.81°F) |
Actual ambient temperature displayed |
Thermistor assembly circuit malfunction |
|
Tester Display |
|---|
| Ambient Temperature Sensor |
OK:
The value of the display does not change frequently.
| NG | .gif) | GO TO AMBIENT TEMPERATURE DISPLAY SYSTEM |
|
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| 2. |
READ VALUE USING GTS |
(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:
|
|
Tester Display |
|---|
| Coolant Temperature |
OK:
The value of the display does not change frequently.
| NG | | GO TO COOLING SYSTEM |
|
| 3. |
CHECK REFRIGERANT PRESSURE |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Air Conditioner > Data List|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Regulator Pressure Sensor |
Air conditioner pressure sensor |
Min.: -32768 kPa(gauge) Max.: 32767 kPa(gauge) |
Actual refrigerant pressure displayed |
Refrigerant line (gas leak etc.)
|
|
Tester Display |
|---|
| Regulator Pressure Sensor |
(b) Install a manifold gauge set.
(c) Read the manifold gauge pressure when the following conditions are met.
(1) Prepare the vehicle according to the table below.
Measurement Condition:|
Item | Condition |
|---|---|
|
Vehicle doors | Fully open |
|
Temperature setting | MAX COLD |
|
Blower speed | HI |
|
A/C switch | On |
|
Recirculation/fresh switch |
RECIRCULATION |
|
Interior temperature |
25 to 35°C (77 to 95°F) |
Standard Pressure:
Low pressure side
150 to 250 kPa (1.5 to 2.5 kgf/cm2, 22 to 36 psi)
High pressure side
1370 to 1570 kPa (14 to 16 kgf/cm2, 199 to 228 psi)
(d) Compare the values displayed in the Data List and on the manifold gauge.
OK:
The values displayed in the Data List and on the manifold gauge match.
| OK | | GO TO ON-VEHICLE INSPECTION (CHECK REFRIGERANT PRESSURE USING GAUGE) |
| NG | | REPLACE AIR CONDITIONER PRESSURE SENSOR |
READ NEXT:
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.
No Cool Air Comes Out
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.
Symptom Factor
No cool ai
Air Vent cannot be Switched
DESCRIPTION If the air outlet mode does not change even though the air outlet display changes, the following factors may be the cause.
Symptom Factor
Air outlet mode cannot be changed
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT REAR COMBINATION LIGHT LENS AND BODY LH (for Bulb Type Clearance Light)
(a) Check that the rear combination light lens and body LH.
(1) Apply auxiliary battery voltage to the rear combination light lens and body LH and check that the light comes on.
OK:
Parts Location
PARTS LOCATION ILLUSTRATION
*1 INVERTER WATER PUMP ASSEMBLY
*2 INVERTER WITH CONVERTER ASSEMBLY
*3 ECM
*4 COMPRESSOR WITH MOTOR ASSEMBLY
*5 HYBRID VEHICLE TRANSAXLE ASSEMBLY
*6 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSE
