Honda Civic. Manual — part 908

Fig. 21: Measuring Voltage Between Navigation Unit Connector A (17P)
Terminal No. 17 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 7.

NO -Repair open in the wire between the under-dash fuse/relay box and the
navigation unit.

7. Turn the ignition switch to ON (II).
8. Measure the voltage between navigation unit connector A (17P) terminal No.

14 and body ground.

Fig. 22: Measuring Voltage Between Navigation Unit Connector A (17P)
Terminal No. 14 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Navigation System - Civic (Except Hybrid)

YES -Go to step 9.

NO -Repair open in the wire between the under-dash fuse/relay box and the
navigation unit.

9. Measure the voltage between the navigation unit connector A (17P) terminal

No. 9 and body ground, and between navigation unit connector C (12P)
terminal No. 4 and body ground.

Fig. 23: Measuring Voltage Between Navigation Unit Connector A (17P)
Terminal No. 9 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig. 24: Measuring Voltage Between Navigation Unit Connector C (12P)
Terminal No. 4 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 0.1 V?

YES -Replace the navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION).

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Navigation System - Civic (Except Hybrid)

NO -Repair open in the wire between the navigation unit and body ground
(G504) (see CONNECTOR TO HARNESS INDEX ), (G505) (see
CONNECTOR TO HARNESS INDEX ).

PICTURE HAS LINES/ROLLS/OTHER ISSUES OR IS AN ODD COLOR

1. Check for electronic aftermarket accessories (possibly hidden) mounted near

the navigation unit.

Are there any electronic accessories?

YES -Disable the accessories, and recheck.

NO -Go to step 2.

2. Turn the ignition switch to ON (II).
3. Start up the navigation picture.

Is the picture scrolling horizontally (left to right or right to left)?

YES -Go to step 5.

NO -Go to step 4.

NOTE:

Make sure that the correct DVD color and version are
installed.

Check any official Honda service website for more
service information about the navigation system.

Check the navigation screen settings for brightness,
contrast, black level and the color screen for map color
and menu color.

Check the connectors for poor connections or loose
terminals.

Before troubleshooting, make sure you have the
navigation and audio system anti-theft codes.

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Navigation System - Civic (Except Hybrid)

4. Go into the Diagnostic mode and use RGB Color diagnostic under Monitor

Check (see MONITOR CHECK).

Are the red, green, and blue colored circle shown?

YES -Go to step 5.

NO -Replace the navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION).

5. Turn the ignition switch to LOCK (0), then turn to ON (II) and observe the

navigation picture.

Did the image improve?

YES -Check for sources of electrical noise, such as poor battery connection,
alternator, defective battery, aftermarket accessories or cell phone, and poor
pin fits at the display or control unit.

NO -Replace the navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION).

NAVIGATION DISPLAY BUTTONS DO NOT WORK OR RESPOND PROPERLY

1. Turn the ignition switch to ON (II).

Does the navigation display turn on?

NOTE:

Always make sure that the correct DVD color and
version are installed.

Check any official Honda service website for more
service information about the navigation system.

Always check the connectors for poor connections or
loose terminals.

Before troubleshooting, make sure you have the
navigation and audio system anti-theft codes.

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Navigation System - Civic (Except Hybrid)