Blower Motor does not Operate [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK AIR CONDITIONING SYSTEM (MANUAL MODE)
- Turn off the AUTO switch, operate the blower switch and check that the blower motor with fan sub-assembly can be operated manually.
OK
The blower motor with fan sub-assembly operates normally.
Result
Proceed to OK NG
Result:
NG
GO TO DIAGNOSIS PROCEDURE (Blower Motor Circuit). Refer to Blower Motor Circuit [11/2021 - ]
Result:
OK
See step 2
- Turn off the AUTO switch, operate the blower switch and check that the blower motor with fan sub-assembly can be operated manually.
- READ VALUE USING GTS (COOLANT TEMPERATURE)
- 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 temperature after warming up is as specified in the normal condition column.
Result
Proceed to OK NG
Result:
OK
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to REMOVAL [11/2021 - ]
Result:
NG
GO TO COOLING SYSTEM. Refer to ON-VEHICLE INSPECTION [11/2021 - ]
- Read the Data List according to the display on the GTS.