Recirculated/Fresh Air Modes Switch without User Input [11/2021 - ]: Procedure

Result

Result: 

B 

See step  3

Result: 

A 

See step  2

1. 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
   Efficient Ventilation Mode	Function to automatically change ambient air induction and room circulation is set.	OFF / ON	Customized value displayed	-

   Body Electrical > Air Conditioner > Data List 

   Tester Display
   Efficient Ventilation Mode

   Result

   Result	Proceed to
   Efficient Ventilation Mode is set to "OFF"	A
   Efficient Ventilation Mode is set to "ON"	B

Result: 

B 

CUSTOMIZE SETTING (Efficient Ventilation Mode to "OFF") 

Result: 

A 

See step  3

1. 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	Ambient temp. sensor (thermistor assembly)	-327.68 to 327.67°C	Actual ambient temperature displayed	Ambient temp. sensor (thermistor assembly) circuit malfunction

   Body Electrical > Air Conditioner > Data List 

   Tester Display
   Ambient Temperature Sensor

   OK

   The value of the display does not change frequently.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO OTHER DIAGNOSIS PROCEDURE (Ambient Temperature Display System). Refer to  Ambient Temperature Display System [11/2021 - ]  

Result: 

OK 

See step  4

1. 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.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO COOLING SYSTEM. Refer to  ON-VEHICLE INSPECTION [11/2021 - ] 

Result: 

OK 

See step  5

1. Install a manifold gauge set.

   Refer to ON-VEHICLE INSPECTION [11/2021 - ]

2. Prepare the vehicle according to the table below.
   MEASUREMENT CONDITION:
   
   

   Item	Condition
   Doors	Fully open
   A/C Switch	On
   Recirculation/fresh Control Switch	Recirculation
   Set Temperature	MAX COLD
   Blower Speed	HI
   Air Conditioning Air Inlet Temperature	25 to 35°C (77 to 95°F)

3. Compare the values displayed in the Data List and on the manifold gauge.

   Body Electrical > Air Conditioner > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Regulator Pressure Sensor	Air conditioning pressure sensor	-32.768 to 32.767 MPaG	Actual refrigerant pressure displayed	Refrigerant line (gas leak etc.) Air conditioning pressure sensor circuit malfunction

   Body Electrical > Air Conditioner > Data List 

   Tester Display
   Regulator Pressure Sensor

   OK

   The values displayed in the Data List and on the manifold gauge match.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET. Refer to  ON-VEHICLE INSPECTION [11/2021 - ] 

Result: 

NG 

REPLACE AIR CONDITIONING PRESSURE SENSOR. Refer to  REMOVAL [11/2021 - ]