FAIL-SAFE CHART
1. HID Headlight System
(a) Light Control ECU
(1) The light control ECU stops illuminating the HID headlights when any of the following abnormalities are detected.
Condition |
Content |
---|---|
Open in output side circuit |
|
Short between output terminals |
|
Leak between output terminal and ground point |
|
Excessively low output voltage |
|
Excessively high output voltage |
|
Excessively high input voltage |
|
Low input voltage |
|
2. Automatic Headlight Beam Level Control System
(a) The headlight leveling ECU assembly operates in fail-safe mode if an abnormal condition such as those listed below has been detected, and keep the last high beam status.
Item |
Abnormality Detection Condition |
Return Condition |
Warning Indicator |
---|---|---|---|
Height control sensor power source voltage |
Abnormal height control sensor power source voltage (4.6 V or less, or 6.25 or more) is detected. |
Abnormal voltage is not detected for 5 seconds consecutively |
Illuminated |
Height control sensor signal voltage |
Abnormal height control sensor signal voltage (0.25 V or less, or 4.75 V or more) is detected. |
||
High power source voltage |
Abnormal high ignition voltage (18.5 V or more) is detected. |
Voltage of 17.5 V or less is detected |
Not illuminated |
Low power source voltage |
Abnormal low ignition voltage (9.0 V or less) is detected. |
Voltage of 9.3 V or more is detected for 0.1 seconds consecutively |
Not illuminated |
Reset while running |
Reset by a temporary blackout etc. while running. |
Vehicle is stopped |
Not illuminated |
3. Automatic Light Control System
If the main body ECU (driver side junction block assembly) detects a malfunction in the automatic light control sensor, the main body ECU (driver side junction block assembly) effects fail-safe control to prohibit the automatic light control. If the low beam headlights and taillights are on, the lights will remain on until the light control switch is turned off.
4. Automatic High Beam System
(a) The main body ECU (driver side junction block assembly) operates in the fail-safe mode if an abnormal condition such as those listed below has been detected.
Item |
Abnormality Detection Condition |
Return Condition |
Warning indicator |
---|---|---|---|
Steering Angle Sensor Signal Malfunction |
Steering angle sensor Malfunction is detected. |
Steering angle sensor malfunction is not detected, and ignition switch is turned to ON again. |
Flash |
Steering angle sensor zero point memory invalid is detected. |
Steering angle sensor zero point memory valid is detected. |
Not illuminated |
|
Steering angle sensor data continuity invalid is detected. |
Steering angle sensor data continuity invalid flag is detected. |
Not illuminated |
|
Speed Sensor Signal Malfunction |
Abnormal speed sensor signal is detected. |
Normal speed sensor signal is detected. |
Flash |
CAN Communication Signal Malfunction |
Normal CAN communication signal is not detected for more than 10 seconds consecutively. |
Normal CAN communication signal is detected. |
Flash |
Automatic High Beam Sensor |
Communication stopped for 10 seconds consecutively. |
Normal communication signal is detected. |
Flash |
Vehicle Speed Signal Malfunction (B2282)
DESCRIPTION
The power management control ECU receives vehicle speed information using 2 methods.
It receives a speed signal from the meter ECU. It also receives speed information
from the meter ECU via CAN. If the information sent using these 2 methods is ...
Setting up the displays
Press the “SETUP” button while the
vehicle is stopped.
The “Custom Settings” screen is displayed on the multi-information display.
If left idle for approximately 10 seconds, the display will revert to the previous
screen.
Select “Display / ...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
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ILLUSTRATION
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