Toyota CH-R Service Manual: Operation History List

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:

w/ Smart Key System:

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

Item

Description

Time Information

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

IG ON/OFF Count

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

*: 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.