A/C Switch Indicator does not Turn On [11/2023 - ]: Procedure

1. Check the malfunction status of switch indicators on the air conditioning control assembly.

   Result

   Result	Proceed to
   A/C switch indicators are not always illuminated	A
   A/C switch indicators are not illuminated only immediately after starting the engine	B

Result: 

B 

GO TO INITIALIZATION. Refer to  INITIALIZATION [11/2023 - ] 

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
   Ambient Temperature Sensor	Ambient temp. sensor (cooler thermistor)	-327.68 to 327.67°C	Actual ambient temperature displayed	Ambient temp. sensor (cooler thermistor) circuit malfunction

   Body Electrical > Air Conditioner > Data List 

   Tester Display
   Ambient Temperature Sensor

   OK

   The display is as specified in the normal condition column (0°C (32°F) or higher).

   Result

   Proceed to
   OK
   NG

Result: 

OK 

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET. Refer to  ON-VEHICLE INSPECTION [12/2019 - ] 

Result: 

NG 

GO TO OTHER DIAGNOSIS PROCEDURE (Ambient Temperature Display System). Refer to  Ambient Temperature Display System [11/2023 - ]