A/C Switch Indicator does not Turn On [12/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK MALFUNCTION STATUS
- Check the malfunction status of switch indicators on the radio and display receiver 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 hybrid control system B
Result:
B
GO TO INITIALIZATION. Refer to INITIALIZATION [12/2023 - ]
Result:
A
See step 2
- Check the malfunction status of switch indicators on the radio and display receiver assembly.
- READ VALUE USING GTS
- 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 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 [09/2023 - ]
Result:
NG
GO TO OTHER DIAGNOSIS PROCEDURE (Ambient Temperature Display System). Refer to Ambient Temperature Display System [12/2023 - ]
- Read the Data List according to the display on the GTS.