DESCRIPTION
If recirculation/fresh mode changes unintentionally and without permission, the following causes are possible.
Symptom | Factor |
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PROCEDURE
1. | CHECK CUSTOMIZE SETTING (EFFICIENT VENTILATION MODE) |
(a) Using the GTS, check that the customize setting Efficient Ventilation Mode is not set to "ON".
Air Conditioner Tester Display | Description | Default | Setting | ECU |
---|---|---|---|---|
Efficient Ventilation Mode | Function to change the mode automatically to recirculation air mode when turning the A/C on to cool the cabin quickly | ON | $00:OFF,$01:ON | Air conditioning amplifier assembly |
OK:
Efficient Ventilation Mode is not set to "ON".
NG |
![]() | CUSTOMIZE SETTING |
|
2. | READ VALUE USING GTS (AMBIENT TEMPERATURE SENSOR) |
(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 |
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Ambient Temperature Sensor |
OK:
The value of the display does not change frequently.
NG |
![]() | GO TO AMBIENT TEMPERATURE DISPLAY SYSTEM |
|
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:
|
Tester Display |
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Coolant Temperature |
OK:
The value of the display does not change frequently.
NG |
![]() | GO TO COOLING SYSTEM |
|
4. | 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.: -32.768 MPaG Max.: 32.767 MPaG | Actual refrigerant pressure displayed |
|
Tester Display |
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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) |
(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 |
The front seat belt pretensioners are designed to deploy in moderate or severe frontal, near frontal collisions.
In addition, the pretensioners operate when a side collision or a rollover accident is detected. The pretensioners operate differently depending on what types of air bags are equipped. For more details about the seat belt pretensioner operation, refer to the SRS Air Bag Deployment Criteria.