Honda Civic. Manual — part 142

YES -Go to step 9.

NO -# Substitute a known-good navigation unit (see NAVIGATION UNIT
REMOVAL/INSTALLATION ) and recheck. If 0.5 V or less are present,
replace the original navigation unit.

9. Turn the ignition switch to LOCK (0).

10. Disconnect navigation unit connector E (14P) and XM receiver connector A

(14P).

11. Check for continuity between navigation unit connector E (14P) and body

ground according to the table. Then check for continuity between the same
terminals listed in the table and navigation unit connector E (14P) No. 3
terminal (the harness shield).

NAVIGATION UNIT CONNECTOR REFERENCE

Fig. 114: Checking Continuity Between Navigation Unit E (14P)
Connector Terminals And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Short to body ground in the wire(s) between navigation unit and XM
receiver. Replace the affected shielded harness.

NO -Go to step 12.

Navigation unit connector Wire ester

E9

BLU

E10

PNK

2008 Honda Civic LX

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

12. Check for continuity between navigation unit connector E (14P) and XM

receiver connector A (14P) according to the table.

NAVIGATION UNIT CONNECTOR AND XM RECEIVER
CONNECTOR REFERENCE

Fig. 115: Checking Continuity Between Navigation Unit E (14P)
Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig. 116: Checking Continuity Between XM Receiver Connector A (14P)
Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Substitute a known-good XM receiver, then reconnect all connectors and
recheck. If the symptom/indication goes away, replace the original XM
receiver. If symptom/indication is still present, replace the navigation unit (see
NAVIGATION UNIT REMOVAL/INSTALLATION ).

Navigation unit connector XM receiver connector Wire color

E9

A9

BLU

E10

A10

PNK

2008 Honda Civic LX

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

NO -Open in the wire(s) between navigation unit and XM receiver. Replace
the affected shielded harness.

AUDIO SYSTEM SOUND IS WEAK OR DISTORTED (DISPLAY IS NORMAL)

1. Check for sound in each mode (AM, FM, XM, and CD).

Is there sound from the speakers, and is the sound quality normal in each
mode?

YES -Intermittent failure. The system is OK at this time. Check for loose
connections at the navigation unit, audio unit, amplifier, and each speaker.

NO -Speakers all work, sound quality is poor.

If the sound quality is poor only with the XM radio, or the XM radio does
not function, go to POOR OR NO SOUND WITH XM RADIO .

If the sound quality is poor only with AM or FM radio, go to POOR AM
OR FM RADIO RECEPTION OR INTERFERENCE .

If sound is poor in all modes, go to SOUND QUALITY DIAGNOSIS .

NAVIGATION UNIT BUTTON ILLUMINATION DOES NOT WORK (WITH NAVIGATION)

1. Turn the ignition switch to ON (II).
2. Turn the combination lighting switch to the parking light position.
3. Check the illumination of the navigation unit buttons.

Are the buttons illuminated?

NOTE:

Check the vehicle battery condition first.

Check the connectors for poor connections or loose
terminals.

NOTE:

Check the vehicle battery condition first.

Check the connectors for poor connections or loose
terminals.

2008 Honda Civic LX

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

YES -Intermittent problem: the navigation unit is OK at this time. Check for
loose or poor connections at the navigation unit connector A (17P).

NO -Go to step 4.

4. Check the illumination of several other buttons not related to the navigation

system.

Are the buttons illuminated?

YES -Go to step 5.

NO -Troubleshoot the interior lights. Start by checking the No. 14 (7.5 A) fuse
in the under-dash fuse/relay box. If the fuse is OK, check for an open in the
wire between the under-dash fuse/relay box and the navigation unit.

5. Turn the ignition switch to LOCK (0).
6. Disconnect navigation unit connector A (17P).

7. Disconnect gauge control module (tach) 36P connector.
8. Check for continuity between navigation unit connector A (17P) No. 1 terminal

and gauge control module (tach) 36P connector No. 14 terminal.

Fig. 117: Checking Continuity Between Navigation Unit A (17P)

NOTE:

Eject all the discs before removing the navigation unit
to prevent damaging the CD player's load mechanism.

2008 Honda Civic LX

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