Lexus ES: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
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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.
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Inspect the fuses related to this system before inspecting the suspected areas below.
Symptom | Suspected Area | Link |
Cooling fan does not operate | Engine coolant temperature sensor | |
EFI-MAIN NO. 1 relay | |
Cooling fan circuit | |
Fan with motor assembly | - |
ECM | |
Cooling fan does not stop (continues to operates) | Engine coolant temperature sensor | |
Cooling fan circuit | |
Fan with motor assembly | - |
ECM | |
Cooling fan speed does not change | Cooling fan circuit | |
Fan with motor assembly | - |
ECM | |
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ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT COOLING FAN SYSTEM CAUTION: To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fan when inspe
DESCRIPTION The ECM calculates an appropriate cooling fan speed based on the engine coolant temperature, air conditioning switch status, refrigerant pressure, engine speed and vehicle speed, and sends
On-vehicle InspectionON-VEHICLE INSPECTION CAUTION / NOTICE / HINT CAUTION: Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine c
SEE MORE:
INSTALLATION PROCEDURE 1. INSTALL WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY (a) Install the windshield washer motor and pump assembly as shown in the illustration. Install in this Direction (b) Connect the connector. (c) Connect the washer hose. 2. ADD WASHER FLUID (a) Connect the washer h
DATA LIST / ACTIVE TEST ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts o
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