Lexus ES manuals

Lexus ES: Vehicle Control History

VEHICLE CONTROL HISTORY

Vehicle Control History

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Part of the control history can be confirmed using the vehicle control history.

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 Parking Support Brake System (for Hv Model)

 Stop Light Relay Circuit (C1A4B)

DESCRIPTION When a stop light relay circuit malfunction signal sent from the electronically controlled brake system is detected by the clearance warning ECU assembly, DTC C1A4B is stored. DTC No.

 ENG / EHV Device (C1A40)

DESCRIPTION When a SFI system malfunction signal sent by the hybrid vehicle control ECU is detected by the clearance warning ECU assembly, DTC C1A40 is stored. DTC No. Detection Item DTC Detect

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 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 suspect

 Linear Solenoid Circuit (C1298)

DESCRIPTION The 4WD ECU assembly receives signals from each sensor to control clutch fluid pressure for limiting the center differential operation, which distributes torque according to the driving conditions. DTC No. Detection Item DTC Detection Condition Trouble Area C1298 Linear So

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