Lexus NX: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Cooling Fan System| Symptom | Suspected Area | Link |
|---|---|---|
| Cooling fans do not operate | CAN communication system | |
| Engine coolant temperature sensor | | |
| Cooling fan circuit | | |
| Cooling fan motor | | |
| No. 2 cooling fan motor | | |
| FAN NO.1 relay | | |
| Cooling fan ECU | | |
| ECM | | |
| Cooling fans do not stop (continue to operate) | CAN communication system | |
| Engine coolant temperature sensor | | |
| Cooling fan circuit | | |
| Cooling fan ECU | | |
| ECM | | |
| Cooling fan speed does not change | CAN communication system | |
| Cooling fan circuit | | |
| Cooling fan ECU | | |
| ECM | |
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On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT COOLING FAN SYSTEM (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powe
Cooling Fan Circuit
DESCRIPTION The ECM calculates an appropriate cooling fan speed based on the engine coolant temperature, air conditioning switch condition, refrigerant pressure, hybrid coolant temperature, engine spe
Cooling System
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT FOR COOLANT LEAK CAUTION: To avoid the danger of being burned, do not remove the radiator reservoir cap while the engine assembly and r
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System Description
SYSTEM DESCRIPTION UNLOCK OPERATION CONDITIONS FOR STEERING LOCK (a) When the following condition is met, the unlock operation is performed.
The power switch is on (ACC) or on (IG).
HINT: When the power switch is turned on (ACC) or on (IG) and the key and certification ECU (smart key ECU assem
Inspection
INSPECTION PROCEDURE 1. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (a) Check the operation of the mirror surface. (1) Disconnect the outer rear view mirror assembly LH connector. *a Component without harness connected (Outer Rear View Mirror Assembly LH) (2) Apply auxiliar
