Honda Civic. Manual — part 134
1. Turn the ignition switch to ON (II).
2. Check that the volume button is not set to min level.
Is it at MIN level?
YES -Raise the volume level, and recheck the function.
NO -Go to step 3.
3. Do the speaker check mode in the self-diagnostic function (see SELF-
DIAGNOSTIC FUNCTION).
Do any or all of the speakers fail to sound?
YES -Speaker(s) failed the test:
If at least one speaker is OK, go to step 4.
If all speakers fail to sound;
With premium sound system: Go to step 12.
Without premium sound system: Go to step 7.
NO -Speakers all work, but sound quality is poor:
If the sound is poor only with AM or FM, go to POOR AM OR FM
RADIO RECEPTION OR INTERFERENCE (see POOR AM OR FM
RADIO RECEPTION OR INTERFERENCE (WITHOUT
NOTE:
Check the vehicle battery condition first.
Check the connectors for poor connections or loose
terminals.
Set the fader and balance positions to the center.
Before performing symptom troubleshooting, do the
power switch will not turn ON troubleshooting (see
AUDIO UNIT POWER SWITCH WILL NOT TURN ON (NO
INFORMATION DISPLAY AND NO SOUND) (WITHOUT
NAVIGATION)).
2008 Honda Civic LX
2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)
NAVIGATION)).
If the sound is poor only with disc.
Try several known- good disc in the audio unit.
If the sound quality is normal, the original disc is faulty.
If the sound quality is still poor, replace the audio unit.
If the sound is poor in all modes, go to SOUND QUALITY
DIAGNOSIS .
4. Turn the ignition switch to LOCK (0).
5. Remove the speaker(s) with no sound (see SPEAKER REPLACEMENT),
and disconnect its connector.
6. Check the speaker 2P connector for a loose or poor connection.
Reconnect the speaker 2P connector and recheck the symptom; does it still
fail?
YES -Go to step 7.
NO -Operation is normal.
7. Make sure turn the ignition switch is in LOCK (0).
8. Measure the resistance between the (+) and (-) terminal of the speaker
connector.
Is there about 4 ohms?
YES -
With premium sound system: Go to step 18.
Without premium sound system: Go to step 9.
NO -Faulty speaker(s).
9. Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION).
Disconnect audio unit connector A (17P).
2008 Honda Civic LX
2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)
10. Measure the resistance between the following terminals of audio unit connector
A (17P).
SPEAKER TERMINALS REFERENCE
Fig. 74: Measuring Resistance Between Audio Unit A (17P) Connector
Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there about 4 ohms?
YES -Go to step 11.
NO -Repair open or short in the wires between audio unit and speaker(s).
11. Check for continuity between body ground and following terminals of audio
unit connector A (17P).
NOTE:
Eject all the discs before removing the audio unit to
prevent damaging the CD player's load mechanism.
Speaker
Terminal Wire color
Driver's door speaker, Left tweeter
A12 (+)
LT GRN
A3 (-)
PNK
Front passenger's door speaker, Right tweeter
A15 (+)
GRY
A7 (-)
BRN
Left rear speaker
A11 (+)
YEL
A2 (-)
BRN
Right rear speaker
A16 (+)
BLU
A8 (-)
ORN
2008 Honda Civic LX
2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)
SPEAKER TERMINALS REFERENCE
Fig. 75: Checking Continuity Between Audio Unit A (17P) Connector
Terminals And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair short to body ground in the wire(s) between the audio unit and
speaker(s).
NO -Substitute a known-good audio unit and recheck. If the
symptom/indication goes away, replace the original audio unit.
12. Measure the voltage between stereo amplifier connector A (20P) No. 10
terminal and body ground.
Speaker
Terminal Wire color
Driver's door speaker, Left tweeter
A12 (+)
LT GRN
A3 (-)
PNK
Front passenger's door speaker. Right tweeter
A15 (+)
GRY
A7 (-)
BRN
Left rear speaker
A11 (+)
YEL
A2 (-)
BRN
Right rear speaker
A16 (+)
BLU
A8 (-)
ORN
2008 Honda Civic LX
2006-08 ACCESSORIES & EQUIPMENT Audio System - Civic (Except Hybrid)
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