Toyota CH-R Service Manual: Operation History List

OPERATION HISTORY LIST

NOTICE:

  • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read out and saved, the operation history information could be lost.
  • The function "Read operation history" uses the current system time setting inside the Techstream and the time counter inside the controlling ECU to calculate the timings shown in the operation history. For this reason, before reading out the operation history, first make sure that the Techstream system clock is accurately set to the current time.
  • Before replacing the main body ECU (multiplex network body ECU), refer to REGISTRATION*1.

    Click here

    *1: w/ Smart Key System

  • The ignition switch is off and all the doors, and the hood are closed and all doors are locked by wireless operation or entry operation*1.

    *1: w/ Smart Key System

Operation History

HINT:

Operation history: The main body ECU (multiplex network body ECU) records the theft deterrent system operation history, which can be read out using the Techstream.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

(e) Following the instructions on the screen, save the operation history.

Auto alarm activated for no reason

Tester Display

Item Description

Vehicle Condition / Environment

Reason for Detection

Notes

Hood Open

Hood Courtesy Switch ON detected.

(Hood open)

Vehicle

Hood Courtesy Switch system malfunction

Change in Hood Courtesy Switch circuit ON/OFF status detected

NOTICE:

Even when the inspection result is normal, if the alarm often sounds due to the same operational cause "Hood open", after first making sure that the cause is not partial engagement of a connector, replace the hood courtesy switch.

Environment

Hood vibration occurs due to strong wind, etc. when hood is partially open

"Hood open" detected due to vibration

Door Open

Any door courtesy switch ON detected.

(Any door open)

Vehicle

Door courtesy light switch system malfunction

Ground short in courtesy light switch circuit detected

NOTICE:

Even when the inspection result is normal, if the alarm often sounds due to the same operational cause "Door open", after first making sure that the cause is not partial engagement of a connector, replace all door courtesy light switches.

Door Unlock

Any door lock position switch ON detected.

(Any door unlocked)

Vehicle

Door lock position switch system malfunction

Door unlocked using mechanical key

Ground short in door lock position switch circuit detected

Unlocking of door lock detected

NOTICE:

Even when the inspection result is normal, if the alarm often sounds due to the same operational cause "Door unlocked", after first making sure that the cause is not partial engagement of a connector, replace all lock position switches.

IG

w/o Smart Key System:

  • Key switch (unlock warning switch) OFF and IG ON detected.

w/ Smart Key System:

  • IG OFF → IG ON detected 5 seconds or more after engine switch pressed.

Vehicle

Ignition system malfunction

+B short in ignition circuit detected

-

Battery Desorption

Disconnection and reconnection of vehicle battery detected.

Vehicle

While alarm is armed, for a reason such as battery depletion, etc., "Battery removal → installation" or "Jump start using booster cables" was performed.

System is configured to sound the alarm if battery (+B circuit) is disconnected → reconnected while alarm is armed.

NOTICE:

Even when the inspection result is normal, if the alarm often sounds due to the same operational cause "Battery", replace the main body ECU (multiplex network body ECU).

Momentary disconnection in +B circuit

HINT:

Explanation of the indication item of the operation history.

Item

Description

Time Information

Time that the main body ECU (multiplex network body ECU) performed each operation history item.

IG ON/OFF Count

  • Counter that is incremented when turning ignition switch from ON to OFF.
  • Initial value is 0 times, maximum value is 255 times.
  • When value reaches 255, it returns to 0 at the next incrementation and counting continues.

Operation Details

Name of the operation history performed by the main body ECU (multiplex network body ECU).

Elapsed Time After CPU reset

Starting from the point in time when battery voltage supply to the main body ECU (multiplex network body ECU) began, the elapsed time until each operation history item was performed.

CPU Reset Count

  • The number of times battery voltage supply to the main body ECU (multiplex network body ECU) went from a non-energized* to an energized state.
  • Initial value is 0 times, maximum value is 3 times.
  • When value reaches 3, it returns to 0 at the next incrementation and counting continues.

*: Operation history that results in a non-energized state includes removal/installation of the battery, removal/installation of the main body ECU (multiplex network body ECU), battery voltage decrease, etc.

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