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
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DESCRIPTION The forward recognition camera monitors its optical axis status. If it determines that the optical axis alignment has become misaligned, it will store DTC C1AA800. DTC No. Detection Item DTC Detection Condition Trouble Area C1AA800 Front Recognition Camera Optical Axis Mis
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the power mirror control system (w/ Memory).
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT:
In troubleshooting, confirm tha
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