Lexus ES: Vehicle Control History
Lexus ES (XZ10) Service Manual / Brake / Parking Brake / Electric Parking Brake System (for Gasoline Model) / Vehicle Control History
VEHICLE CONTROL HISTORY
DESCRIPTION
- Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
- If the customer states that the engine stalled or will not start, it may be possible to diagnose the cause of the malfunction by checking the vehicle history information and Freeze Frame Data.
- The number of possible stored Freeze Frame Data sets, whether multi Freeze Frame Data is available, the number of freeze frame points, Freeze Frame Data items, the ECU internal range, etc., is different depending on the stored group.
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The stored data items for Vehicle Control History Freeze Frame Data are different depending on the stored group. When the value of a data item does not change across all points, only the value of the detection point will be displayed. The contents of the Freeze Frame Data is almost the same as that of the Data List.
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PRECAUTIONS
- As Vehicle Control History may be overwritten whenever the trigger conditions are met, make sure to save Vehicle Control History before performing any inspections.
- As Vehicle Control History may be stored when performing an Active Test, learning, etc., make sure to clear the Vehicle Control History before returning the vehicle to the customer.
CHECK VEHICLE CONTROL HISTORY (ELECTRIC PARKING BRAKE SYSTEM)
HINT:
Vehicle Control History (RoB) of the electric parking brake system (for Gasoline Model) can be confirmed using the same menu for the electronically controlled brake system (for Gasoline Model): Chassis / Brake/EPB / Utility / Vehicle Control History (RoB)
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DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C13A0 Open circuit in Power source circuit Both of following conditions are met:
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Short circuit in Power source circuit (C13A1)
DESCRIPTION C13A1 is stored if the power supply relay in the parking brake ECU assembly has a short circuit. C13A1 is stored if the power switch is off and a voltage of 2.5 V or higher is applied to t
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Reassembly
REASSEMBLY PROCEDURE 1. INSTALL REAR SPOILER SUB-ASSEMBLY (w/ Rear Spoiler) Click here 2. INSTALL LICENSE PLATE LIGHT ASSEMBLY LH Click here 3. INSTALL LICENSE PLATE LIGHT ASSEMBLY RH HINT: Use the same procedure as for the LH side. 4. INSTALL TELEVISION CAMERA ASSEMBLY WITH WIRE Click here 5.
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
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