POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Type A): VEHICLE CONTROL HISTORY; 2023 - 2024 MY RAV4 RAV4 HV [10/2022

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

(a) Using the GTS, check the vehicle control history (RoB).

Chassis > EMPS > Utility

Tester Display

Vehicle Control History (RoB)

Code

Tester Display

Measurement Item

EPS Warning Light

Diagnostic Note

X200C

Vehicle Speed Signal Invalidity

Record of vehicle speed signal invalid history updates
Record of vehicle speed signal invalid history updates (only when CAN vehicle speed (SP1) is disabled)

Yellow illuminated

X206D

Power Source Stop

Record of engine stall/shutdown control history updates

Yellow illuminated

X206E

High Load Continuation

Record of high load continuous control history updates

Does not come on

X206F

Prevention of ECU/Motor Overheat

Record of overheat prevention control history updates

Does not come on

X208F

Battery Voltage Drop

Record of power source voltage drop control history updates

Red illuminated

Record of power source voltage drop suppression control history updates
Record of low battery voltage history updates

Yellow illuminated

Record of load control history updates
Record of chassis power management EPS control history updates

Does not come on

X21DB

Rack Stroke End Position Misjudgment

History of a rack stroke end position misjudgment stored when automatic rack centering procedure was performed.

NOTICE:

If this RoB is stored, a difference in assist force may occur between left and right when turning the steering wheel.

Does not come on

Refer to the following diagnosis procedure:

Using the GTS, perform the automatic rack centering procedure again.
NOTICE:

Reconfirm the cautions and notices in the above reference, make sure that no foreign matter is caught, be careful not to come into contact with people/objects, and perform the automatic rack centering procedure again.

X2600

Software Incompatibility with ENG/HV Control Module (Not Programmed)

When gasoline model or HV model information has not been written

Red illuminated

X2601

Software Inconsistency with ENG/HV Control Module

Record of when assist map has not been written
Record of when assist map identification malfunction is detected
Record of when gasoline model or HV model identification malfunction is detected

Does not come on

X2610

Torque Sensor Missing Calibration of Adjustment Value Non-Memory

Record of when zero point calibration of the torque sensor is not performed

Red illuminated

X2611

Torque Sensor Missing Calibration of Adjustment Incomplete

Record of when zero point calibration of the torque sensor is incomplete

Red illuminated

CLEAR VEHICLE CONTROL HISTORY

(a) Using the GTS, display the vehicle control history (RoB).

Chassis > EMPS > Utility

Tester Display

Vehicle Control History (RoB)

(b) Select the clear button and follow the instructions on the screen to clear the vehicle control history.

NOTICE:

When the vehicle control history is cleared, all the stored history items are cleared.