Starting Up the Service Mode
STARTING UP THE SERVICE MODE1. ignition switch "LOCK" (OFF) position.
2. Turn the ignition switch to the "ACC" position while depressing the "DISP" button on the multi-center display unit (middle grade type). After approximately 5 seconds, the service mode start-up screen is displayed.
COMMUNICATION CHECK
1. Activate the service mode start-up screen.
2. ignition switch "ON" position.
3. Choose "communication check mode" by pressing the function button switch 2.
4. Execute "ENTER" by pressing the function button switch 3.
5. The multi-center display checks the communication conditions and displays the check result.
MONITOR CHECK
1. Choose "Monitor check" from the service mode start-up screen by pressing function button switch 2, and then execute "ENTER" by pressing function button switch 3.
2. Choose a color by function button switch 2, and then execute "ENTER" by function button switch 3. You can check the chosen color on the screen.
COMPASS CHECK
1. Choose "Compass check" from the service mode start-up screen by pressing function button switch 2, and then execute a check by pressing function button switch 3.
2. The multi-center display performs check and then displays the check result.
VEHICLE CHECK
1. Choose "vehicle check" from the service mode start-up screen by pressing function button switch 2, and then execute a check by pressing function button switch 3. Color Gray White Black
2. The multi-center display performs check and displays the check result. Operate the lighting switch or the ignition switch. Check whether the multi-center display screen corresponds to that operation.
AUTO CHECK
1. Activate the service mode start-up screen.
2. Turn the ignition switch to "ON" position.
3. Choose "Auto check" by pressing function button switch 2.
4. Execute "ENTER" by pressing the function button switch 3.
5. The multi-center display unit checks the communication condition, and then shows the check results of "Communication check", "Monitor check", "Compass check", and "Vehicle check". Then the multi-center display ceases CAN communication in approximately seven seconds.
RELEASE OF SERVICE MODE
Move from the check result screen to the service mode start-up screen by pressing "ENTER" above function button switch 3. If you press "BACK" above function button switch 1 during processing, the checks will be cancelled and the screen returns to service mode start-up screen.
FAIL-SAFE FUNCTION OF THE MULTI-CENTER DISPLAY UNIT (MIDDLE GRADE TYPE)
If abnormal power supply voltage or abnormally high temperature is detected in the multi-center display unit (middle grade type), a fail-safe function will be activated to protect the unit, and then blank the screen.
Fail-safe function is activated when:
Power supply voltage is abnormal
- Excessively low voltage: Power supply voltage remains 9 volts or less for approximately 10 seconds.
- Excessively high voltage: Power supply voltage remains 17 volts or more for approximately 10 seconds.
Abnormally high temperature is detected in the unit.
- Internal temperature remains 95 °C (203 °F) for 60 seconds.
If an abnormal voltage or temperature is detected, the multi-center display unit will sound its buzzer to indicate this and activate a message to blank the screen in approximately seven seconds.
NOTE: The unit blanks the screen immediately when the power supply voltage reaches 18 volts.
Fail-safe function is deactivated when:
Power supply voltage is abnormal
- The fail-safe function will be deactivated if the power supply voltage remains 10 volts or more for approximately five seconds, or the ignition switch is turned to the "LOCK" (OFF) position.
- The fail-safe function will be deactivated if the power supply voltage remains 17 volts or less for approximately five seconds or more, or the ignition switch is turned to the "LOCK" (OFF) position.
Abnormally high temperature is detected in the unit.
- The fail-safe function will be deactivated if its internal temperature has reduced to 85 °C (185 °F) or less, or the ignition switch is turned to the "LOCK" (OFF) position.