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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Components
COMPONENTS ILLUSTRATION *1 INVERTER RESERVOIR ASSEMBLY *2 NO. 1 ENGINE COVER SUB-ASSEMBLY *3 WIRE HARNESS - - N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 FRONT EXHAUST PIPE ASSEMBLY *2 NO. 1 ENGINE UNDER COVER ASSEMBLY *3 CENTER EXHAU
Removal
REMOVAL PROCEDURE 1. REMOVE RADIATOR SUPPORT OPENING COVER Click here 2. REMOVE HOOD LOCK ASSEMBLY Click here 3. REMOVE CENTER HOOD CUSHION (a) Detach the 2 claws and remove the center hood cushion. 4. REMOVE HOOD TO FRONT FENDER SEAL LH (a) Detach the clip and remove the hood to front fend
