POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for HV Model): VEHICLE CONTROL HISTORY; 2023 - 2025 MY Corolla Corolla HV [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM10000000257F5
Model Year Start: 2023	Model: Corolla	Prod Date Range: [09/2022 - ]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for HV Model): VEHICLE CONTROL HISTORY; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ]

VEHICLE CONTROL HISTORY

DESCRIPTION

Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
It may be possible to determine 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.
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 (POWER STEERING SYSTEM)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Utility / Vehicle Control History (RoB).

Tester Display
Vehicle Control History (RoB)

FFD Group	Code	Tester Display	Measurement Item	Diagnostic Note
-	X200C	Vehicle Speed Signal Invalidity	Latest vehicle speed signal invalid history Latest vehicle speed signal fault control history (applicable only when CAN Vehicle Speed (SP1) is invalid)	-
-	X206D	Power Source Stop	Latest Engine Stall/READY OFF Control History	-
-	X206E	High Load Continuation	Latest High Load Continuous Control Number of Times	-
-	X206F	Prevention of ECU/Motor Overheat	Latest Overheat Prevention Control History	-
-	X208F	Battery Voltage Drop	Latest Battery Voltage Drop History Latest Power Supply Voltage Drop Control History Latest Power Supply Voltage Drop Restraint Control History Latest Chassis Power Supply Management EPS Control History Latest Load Control History	-
-	X2600	Software Incompatibility with ENG/HV Control Module (Not Programmed)	History stored when vehicle information (gasoline/HV) is not stored	-
-	X2601	Software Inconsistency with ENG/HV Control Module	History stored when Assist Map Writing has not been performed History stored when assist map data does not match History stored when vehicle information (gasoline/HV) does not match	-
-	X2610	Torque Sensor Missing Calibration of Adjustment Value Non-Memory	History stored when zero point calibration not performed	-
-	X2611	Torque Sensor Missing Calibration of Adjustment Incomplete	History stored when zero point calibration failed	-
-	XF01B	ECU Security Key NotRegistered	ECU security key not updated
-	XF021	Software Not Programmed	At the time of software non-writing

CLEAR VEHICLE CONTROL HISTORY (POWER STEERING SYSTEM)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Utility / Vehicle Control History (RoB).

Tester Display
Vehicle Control History (RoB)

(f) Press the DTC clear button.

NOTICE:

By performing this procedure, all stored Vehicle Control History items will be cleared.

VEHICLE CONTROL HISTORY (AIRBAG SYSTEM)

HINT:

A part of the control history can be confirmed using the vehicle control history.

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