No Cooling at All [11/2021 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Lexus NX 350, 2025 Lexus NX 250, 2024 Lexus NX 350, 2024 Lexus NX 250, and 2023 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK SWITCH INDICATOR
- Operate each switch on the radio and display receiver assembly and check that the switch indicators operate normally.
OK
All switch indicators operate normally.
Result
Proceed to OK NG
Result:
NG
GO TO OTHER DIAGNOSIS PROCEDURE (Operation not Accepted Even If Air Conditioning Switch is Operated). Refer to Operation not Accepted Even If Air Conditioning Switch is Operated [11/2021 - ]
Result:
OK
See step 2
- Operate each switch on the radio and display receiver assembly and check that the switch indicators operate normally.
- PERFORM ACTIVE TEST USING GTS
- Perform the Active Test according to the display on the GTS.
Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note Front Left Air Mix Damper Control Servo Motor This test activates the Front Left Air Mix Damper Control Servo Motor.
(No. 1 air conditioning radiator damper servo sub-assembly (front left side air mix))128: Min
384: MaxOperate with ignition switch ON. Front Right Air Mix Damper Control Servo Motor This test activates the Front Right Air Mix Damper Control Servo Motor.
(No. 1 air conditioning radiator damper servo sub-assembly (front right side air mix))128: Min
384: MaxOperate with ignition switch ON. Body Electrical > Air Conditioner > Active Test
Active Test Display Front Left Air Mix Damper Control Servo Motor Data List Display Front Left Air Mix Damper Control Servo Motor Actual Pulse Body Electrical > Air Conditioner > Active Test
Active Test Display Front Right Air Mix Damper Control Servo Motor Data List Display Front Right Air Mix Damper Control Servo Motor Actual Pulse OK
Damper servo motor is operated.
Result
Proceed to OK NG
Result:
OK
INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET. Refer to ON-VEHICLE INSPECTION [11/2021 - ]
Result:
NG
GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION). Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - ]
- Perform the Active Test according to the display on the GTS.