Diagnosis System (NAVI Control Unit)

DIAGNOSIS SYSTEM (NAVI CONTROL UNIT)


Work Flow


ON BOARD SELF-DIAGNOSIS FUNCTION






NOTE:
Make the status that is set by D/N function be shown.

SELF-DIAGNOSIS MODE (DCU)
1. Start the engine.
2. Turn the audio system off.





3. While pressing the "MEMORY 4" button, turn the volume control dial clockwise or counterclockwise for 30 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to previous screen is performed by pressing "BACK" button.





4. The initial self-diagnosis screen will be shown, and items "Self-diagnosis (DCU)", "Self-Diagnosis (NAVI)", "Confirmation/Adjustment" and "CAN DIAG SUPPORT MONITOR" will become selective.
5. Perform self-diagnosis by selecting the "Self-Diagnosis".





- Self-diagnosis subdivision screen will be shown and the operation enters the self-diagnosis mode.
- A bar graph shown below the self-diagnosis subdivision screen indicates progress of the diagnosis.





6. When the self-diagnosis completes, optional part confirmation screen will be shown.
- When connection of an optional part is judged error, a screen to check if the optional part is actually fitted on the vehicle or not will be shown. When fitted, select the switch of the part on the screen and press "End". Then the "SELF DIAGNOSIS" screen will be shown.
- When the optional part is connected normally, the switch for the part will not appear on the screen.





7. On the "SELF DIAGNOSIS" screen, each unit name will be colored according to the diagnosis result, as follows.






- If several malfunctions are present in a unit, color of its switch on the screen will be either red, yellow, or gray, determined by the malfunction of the highest priority.





8. Select a switch on the "SELF DIAGNOSIS" screen and comments for the diagnosis results will be shown.
- When the switch is green, the following comment will be shown. "Self-diagnosis was successful. Further diagnosis and adjustments are recommended. Follow the "confirmation/adjustment" menu."
- When the switch is yellow, the following comment will be shown. "Connection to the following unit is abnormal.

- When the switch is red, the following comment will be shown. "DCU is abnormal".

SELF�DIAGNOSIS RESULT

Quick reference table
1. Select a malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check.
3. Turn the ignition switch OFF and perform self-diagnosis again.





CAUTION:
- When AV switch has a malfunction, you cannot start. Refer to AV Switch .
- When display unit has a malfunction, you cannot start. Refer to Display Control Unit .

Self-Diagnosis Codes






SELF-DIAGNOSIS MODE (NAVI)
1. Start the engine.





2. Turn the audio system off.
3. While pressing the "MEMORY 4" button, turn the volume control dial clockwise or counterclockwise for 30 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to previous screen is performed by pressing "BACK" button.





4. The initial self-diagnosis screen will be shown, and items "Self-Diagnosis (DCU)", "Self-Diagnosis (NAVI)", "Confirmation/Adjustment" and "CAN DIAG SUPPORT MONITOR" will become selective.
5. Perform self-diagnosis by selecting the "Self-diagnosis (NAVI)".





- Self-diagnosis subdivision screen will be shown and the operation enters the self-diagnosis mode.
- A bar graph will be shown on the screen to indicate progress of the diagnosis.





6. On the "SELF DIAGNOSIS" screen, each unit name will be colored according to the diagnosis result, as follows.






- If several malfunctions are present in a unit, color of its switch on the screen will be either red, yellow, or gray, determined by the malfunction of the highest priority.





7. Select a switch on the "SELF DIAGNOSIS" screen and comments for the diagnosis results will be shown.
- When the switch is green, the following comment will be shown. "Self diagnosis did not detect any error. Please refer to the Confirmation / Adjustment function for more detailed diagnosis information."
- When the switch is yellow, the following comment will be shown. "Connection to the following unit is abnormal.
- When the switch is red, the following comment will be shown.
"Center Control Unit is abnormal".
- When the switch is gray, the following comment will be shown.
"Detected connection error(s) are the following. Please refer to the confirmation/adjustment function for more detailed diagnosis information."

SELF�DIAGNOSIS RESULT

Quick reference table
1. Select an malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check.
3. Turn the ignition switch OFF and perform self-diagnosis again.






CAUTION:
- When AV switch has a malfunction, you cannot start. Refer to AV Switch .
- When display unit has a malfunction, you cannot start. Refer to Display Unit .

Self-diagnosis codes






CONFIRMATION/ADJUSTMENT MODE
1. Start the engine.





2. Turn the audio system off.
3. While pressing the "MEMORY 4" button, turn the volume control dial clockwise or counterclockwise for 30 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to previous screen is performed by pressing "BACK" button.





4. The initial self-diagnosis screen will be shown, and items "Self-Diagnosis (DCU)", "Self-Diagnosis (NAVI)", "Confirmation/Adjustment" and "CAN DIAG SUPPORT MONITOR" will become selective.
5. When "Confirmation/Adjustment" is selected on the initial self-diagnosis screen, the operation will enter the CONFIRMATION/ADJUSTMENT mode. In this mode, check and adjustment of each item will become possible.





6. The initial trouble diagnosis screen will be shown, and items "Display Diagnosis", "Vehicle Signals", "Auto Climate Control" and "Navigation" will become selective.
7. Select each switch on "CONFIRMATION/ADJUSTMENT" screen to display the relevant diagnosis screen.

DISPLAY DIAGNOSIS





- When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.






- When the color of the screen looks unusual, refer to RGB (R: Red) Signal Circuit , RGB (G: Green) Signal Circuit and RGB (B: Blue) Signal Circuit .

VEHICLE SIGNALS
- A comparison check can be made of each actual vehicle signal and the signals recognized by the system.






CAUTION:
In case of confirming light signal, set D/N mode to ON/OFF of lighting switch (normal setting).
- OFF: D (Day mode)
- ON:N (Night mode)
Unless above setting, light signal (ON/OFF) may not be accurately displayed.






NAVIGATION
1. The initial confirmation/adjustment screen will be shown, and items "Display Diagnosis", "Vehicle Signals", "Navigation", "Error History" and "Delete Unit Connection Log" will become selective.





2. Select each switch on "CONFIRMATION/ADJUSTMENT" screen to display the relevant diagnosis screen.

DISPLAY DIAGNOSIS





- When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.






- When the color of the screen looks unusual, refer to RGB (R: Red) Signal Circuit , RGB (G: Green) Signal Circuit and RGB (B: Blue) Signal Circuit .

VEHICLE SIGNALS
- A comparison check can be made of each actual vehicle signal and the signals recognized by the system.






CAUTION:
In case of confirming light signal, set D/N mode to ON/OFF of light switch (normal setting).
- OFF: D (Day mode)
- ON:N (Night mode)
Unless mode is in above setting, light signal (ON/OFF) may not be accurately displayed.






NAVIGATION
1. The navigation screen will be shown, and items "Speed Calibration" and "Steering Angle Adjustment" will become selective.





2. Select each switch on "NAVIGATION" screen to display the relevant diagnosis screen.

Steering Angle Adjustment
- Adjusts turning angle output detected by the gyroscope.






Speed Calibration




- During normal driving, distance error caused by tire wear and tire pressure change is automatically adjusted for by the automatic distance correction function. This function, on the other hand, is for immediate adjustment, in cases such as driving with tire chain fitted on tires.

ERROR HISTORY






DIAGNOSIS BY ERROR HISTORY
The "Self-diagnosis" results indicate whether an error occurred during the period from when the ignition switch is turned to ON until "Self-diagnosis" is completed.
If an error occurred before the ignition switch was turned to ON and does not occur again until the "Self-diagnosis" is completed, the diagnosis result will be judged normal. Therefore, those errors in the past which cannot be found by the "Self-diagnosis" must be found by diagnosing the "Error History".
The Error History displays the time and place of the most recent occurrence of that error. However, take note of the following points.
- Correct time of the error occurrence may not be displayed when the GPS antenna substrate within the NAVI control unit has malfunctioned.
- Place of the error occurrence is represented by the position of the current-location mark at the time when the error occurred. If the current-location mark has deviated from the correct position, then the place of the error occurrence may be located correctly.
- The maximum number of occurrences which can be stored is 50. For the 51st and later occurrences, the displayed number remains 50.
When a reproducible malfunction occurred but its cause cannot be identified because several errors are present, record the item, number and place (longitude/latitude) of error occurrence (or delete the Error History), then turn the ignition switch from OFF to ON to reproduce the malfunction. Check the Error History to find the items which show an increased number of occurrences, and diagnose the item.











CAN DIAG SUPPORT MONITOR
1. Start the engine.





2. Turn the audio system off.
3. While pressing the "MEMORY 4" button, turn the volume control dial clockwise or counterclockwise for 30 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to previous screen is performed by pressing "BACK" button.





4. The initial self-diagnosis screen will be shown, and items "Self-diagnosis (DCU)", "Self-Diagnosis (NAVI)", "Confirmation/Adjustment" and "CAN DIAG SUPPORT MONITOR" will become selective.
5. Select "CAN DIAG SUPPORT MONITOR".





6. Display status of CAN communication.





- If the ignition is turned on and UNKWN is shown on the screen, the value of the counter will be up. (MAX50)
- The value of the counter does not change if the ignition changes to OFF. (MAX50)
- If the counter shows the value of 50 and UNKWN is shown, the value of 50 will not be changed.