System Diagnosis Test

Navigation System

System Diagnosis Test

Start-up procedure

1. Turn the ignition switch ON (II), then press and hold the keys in this order: (1) MENU Key. (2) MAP/GUIDE Key, (3) CANCEL Key, and keep them pressed simultaneously for 5 seconds.




2. After the display changes to the diagnosis menu screen, touch the item you want to check, and the check will start. To return to the previous screen, touch the "RETURN" switch on the diagnosis screen.
- System Links.
- Tire Calibrate.
- Monitor Check.
- Yaw Rate.
- Unit Check.
- Cyclic Diag.
- In-line Diag.

System Links




- During diagnosis, all of the communication lines connecting the components are shown in yellow.
- If the system is OK, all of the communication lines connecting the components will change to green, the screen will indicate "OK", and a tone will sound.
- If there is a problem in the system, the faulty communication line will change to red, the screen will indicate "NG", and a tone will sound.
- The indication on the screen will not change until the ignition switch is cycled. After repairing the system, turn the ignition switch OFF to reset the system, then return to the Diagnosis Menu screen, and run system Links again.

Tire Calibrate




- The "AUTO TUNING" is factory-set to "ON", and it should remain on. If you find it has been turned OFF, turn it back ON.
- The "TIRE-CAL TUNING" can be used, but it is not recommended. The AUTO TUNING fundtion keeps the system in better tune.
- When you touch "TIRE CHANGE" the display will change to the TIRE SIZE screen. This screen is rarely used because only the standard tire size is listed.

Tire Size




If the tire-cal factor has been reset, touching the tire size will return the tuning value to the standard value.




Yaw Rate

"Offset" is reference voltage or standard within the yaw rate sensor. It should indicate 1.500 to 3.500 V with the vehicle stopped.

"Sensor" indicator the voltage output from the yaw rate sensor. It should indicate 1.500 to 3.500 V with the vehicle stopped.

A "Sensor" output voltage HIGHER than that of the "Offset" voltage indicates the vehicle is turning to the RIGHT.

A "Sensor" output voltage LOWER than that of the "Offset" voltage indicates the vehicle is turning to the LEFT.

With the vehicle stopped, sitting still with the engine idling, both the "Offset" and "Sensor" voltages should be within 0.01 V ± of each other.

If not replace the Navigation unit.

Example:

NOTE: The vehicle is stopped, sitting still, with the engine idling.

Good Offset 2.517 V
Sensor 2.517 V (0.010 V ±)

Bad Offset 2.517 V
Sensor 2.823 V

NOTE: Do not try to tune the yaw rate sensor unless instructed by American Honda.

Cyclic Diag

This test, checks the following items repeatedly:
- Navigation unit check
- Monitor check (except switch test)

To exit this test, press the CANCEL key

In-Line Diag

This test checks the following item:
- System links
- Car status
- Yaw rate




RGB COLOR

The three primary colors of red, green and blue must be shown. If any color(s) are missing, troubleshoot for the missing color.




WHITE RASTER

The entire display must be shown in white.




Switch Check

Each switch must be shown on the display and each switch must reverse and sound, when touched.

NOTE: The test may be affected if done in direct sunlight.




TEST PATTERN

All 32 colors including black must be indicated (including the back ground color).




BLACK RASTER

The entire display must be shown in black.

Unit Check




Touch the item you want to check, and the check starts.
* : This screen shows '00-03 models.

NOTE: Do not use " Force Download", this command is for the manufacturer's use only.

Disp

When the connection is NG.
First check for loose terminals at the navigation unit and the display unit connectors.

Next check for an open or short in the communication line between the navigation unit and the display unit. If the line is OK, replace the display unit. If the line is found to have an open or short, replace the affected shielded harness.




When the ROM or RAM is NG.
Replace the display unit.

System History




This screen is for the manufacturer's use only.

NOTE: Do not touch the CLR switch. Touching the CLR switch will clear the system history, making it difficult for factory diagnosis if the navigation unit is replaced.

GPS




When the connection is NG, check the GPS antenna connection. If the connection is OK, replace the GPS antenna.

Car Status

Use the car status screen to check each signal.

If the indication does not match the actual vehicle status, check the applicable signal line.

- VSP (vehicle speed pulse indication)
- OFF when vehicle is not moving
- ON when vehicle is moving

- BACK (reverse indication)
- OFF when shift lever is in any position other than reverse
- ON when shift lever is in reverse

- CHG (charging indication)
- ON when engine is running and alternator is charging
- OFF when engine is off or alternator is not charging




- ILL (illumination indication)
- OFF when parking lights or headlights are off
- ON when parking lights or headlights are on

Navi ECU




When any item is NG, replace the navigation unit.

Navi ECU

Back-up Clear




This screen is for manufacturer's use only. It clears the error log, making it difficult for the factory to troubleshoot a problem.