17. Audio unit check:
ο‘
1. SUBSTITUTE A KNOWN-GOOD STEREO AMPLIFIER, AND RECHECK .
Does the symptom go away?
YES : Replace the original stereo amplifier.
NO : REPLACE THE AUDIO UNIT .
NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITHOUT
NAVIGATION AND STEREO AMPLIFIER)
Fig. 148: Audio System Symptom Troubleshooting Flowchart - No Sound Is Heard From Speaker(s)
(Display Is Normal)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
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CHECK THE VEHICLE BATTERY CONDITION FIRST .
Set the fader and the balance positions to the center.
Before doing this troubleshooting, go to AUDIO UNIT POWER SWITCH
WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND)
TROUBLESHOOTING.
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Check the connectors for poor connections or loose terminals.
1. Problem verification:
ο‘
1. Turn the ignition switch to ON (II).
2. Turn on the audio unit, and check for sound in each mode (AM/FM, USB, and CD).
ο‘
Is the sound OK in each mode?
YES : Intermittent failure, the system is OK at this time. Check for loose connections at the audio unit
and speaker(s).
NO : The failure is duplicated in all modes, go to step 2.
NO : Go to POOR AM OR FM RADIO RECEPTION INTERFERENCE (WITH NAVIGATION)
TROUBLESHOOTING.
NO : Go to USB INPUT SOUND IS LOW OR CANNOT BE HEARD (WITHOUT NAVIGATION,
WITH MULTI-INFORMATION DISPLAY) TROUBLESHOOTING.
NO : Go to USB INPUT SOUND IS LOW OR CANNOT BE HEARD (WITHOUT NAVIGATION
AND MULTI-INFORMATION DISPLAY) TROUBLESHOOTING.
NO : Go to AUDIO DISC DOES NOT PLAY TROUBLESHOOTING.
2. Determine possible failure area (volume level, others):
ο‘
1. Check that the volume button is not set to the MIN level.
Is it at the MIN level?
YES : Raise the volume level, and recheck the function.
NO : Go to step 3.
3. Determine possible failure area (audio unit, others):
ο‘
1. DO THE SELF-DIAGNOSTIC FUNCTION, AND USE THE SPEAKER CHECK MODE.
Did all speakers produce a tone?
YES : REPLACE THE AUDIO UNIT .
NO : Go to step 4.
4. Shorted wire check (SPKR lines):
ο‘
1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connector.
ο‘
NOTE:
Eject all the discs before disconnecting the audio unit to prevent
damaging the CD player's load mechanism.
Audio unit connector A (24P)
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3. Check for continuity between these test points and body ground individually.
Test condition IG LOCK (0)
Audio unit connector A (24P): disconnected
Connector
Test circuit Terminal
RL SPKR+ No. 5 (BLU)
RL SPKR- No. 6 (PNK)
RR SPKR+ No. 9 (BLU)
RR SPKR- No. 10 (PNK)
FL SPKR+ No. 15 (WHT)
FL SPKR- No. 16 (BLK)
FR SPKR+ No. 19 (RED)
FR SPKR- No. 20 (GRN)
Audio unit connector A (24P)
Fig. 149: Identifying Audio Unit Connector A (24P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : Repair a short to body ground in the wire(s) between the audio unit and the speaker(s).
NO : The SPKR wires are not shorted to ground. Go to step 5.
5. Determine possible failure area (speaker, others) 1:
ο‘
1. Check the speaker(s) with no sound for any damage.
Is there any damage?
YES : REPLACE THE FAULTY SPEAKER(S) .
NO : Go to step 6.
6. Determine possible failure area (speaker, others) 2:
ο‘
1. Disconnect the following connector(s).
Front door speaker 2P connector
Rear door speaker 2P connector
Tweeter 2P connector (with tweeter)
2. TEST THE SPEAKER(S) .
ο‘
Is the speaker(s) OK?
YES : Go to step 7.
NO : REPLACE THE FAULTY SPEAKER(S) .
7. Open wire check (SPKR lines):
ο‘
1. Reconnect the front door speaker 2P connector(s) and the rear door speaker 2P connector(s).
2. Measure the resistance between test points 1 and 2.
ο‘
Test condition IG LOCK (0)
Audio unit connector A (24P): disconnected
Test point 1: Audio unit
connector A (24P)
Test point 2: Audio unit
connector A (24P)
Test circuits
Resistance
RL SPKR+, RL
SPKR-
RR SPKR+, RR
SPKR-
FL SPKR+, FL
SPKR-
FR SPKR+, FR
SPKR-
About 4
ohms
About 4
ohms
About 4
ohms
About 4
ohms
No. 5 (BLU)
No. 9 (BLU)
No. 15 (WHT)
No. 19 (RED)
No. 6 (PNK)
No. 10 (PNK)
No. 16 (BLK)
No. 20 (GRN)
Fig. 150: Identifying Audio Unit Connector A (24P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is the resistance OK?
YES : The SPKR wires are not open. Go to step 8.
YES : REPLACE THE AUDIO UNIT .
NO : Repair an open in the wire(s) between the audio unit and the speaker(s).
8. Open wire check (FR SPKR (Tweeter) lines):
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1. Connect terminals A and B with jumper wires.
Terminal A Audio unit connector A (24P) No. 15 (WHT)
Terminal B Audio unit connector A (24P) No. 16 (BLK)
Terminal A Audio unit connector A (24P) No. 19 (RED)
Terminal B Audio unit connector A (24P) No. 20 (GRN)
Fig. 151: Connecting Terminals Audio Unit Connector A (24P) No. 15 (WHT) And No. 16
(BLK) With Jumper Wires
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig. 152: Connecting Terminals Audio Unit Connector A (24P) No. 19 (RED) And No. 20
(GRN) With Jumper Wires
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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2. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector A (24P): disconnected
Left (Right) front door speaker 2P connector: disconnected
Audio unit connector A (24P) terminals No. 15 and No. 16: jumped
Audio unit connector A (24P) terminals No. 19 and No. 20: jumped
Test circuit FL SPKR+, FL SPKR-
Test point 1 Left tweeter 2P connector No. 1 (BLK)
Test point 2 Left tweeter 2P connector No. 2 (WHT)
Test circuit FR SPKR+, FR SPKR-
Test point 1 Right tweeter 2P connector No. 1 (GRN)
Test point 2 Right tweeter 2P connector No. 2 (RED)
Fig. 153: Checking For Continuity Between Test Point Left Tweeter 2P Connector No. 1
(BLK) And No. 2 (WHT)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig. 154: Checking For Continuity Between Test Point Right Tweeter 2P Connector No. 1
(GRN) And No. 2 (RED)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : REPLACE THE AUDIO UNIT .
NO : Repair an open in the wire(s) between the audio unit and the tweeter.
POOR AM OR FM RADIO RECEPTION OR INTERFERENCE (WITH NAVIGATION)
Fig. 155: Audio System Symptom Troubleshooting Flowchart - Poor AM Or FM Radio Reception Or
Interference (1 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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