Audio System Symptom Troubleshooting - No sound is heard from the speaker(s) (display is normal) (Without Navigation, With Stereo Amplifier)

NOTE:

Check the vehicle 12 volt battery condition first. Refer to 12 VOLT BATTERY TEST .
Set the fader and the balance positions to the center.
Before doing this troubleshooting, refer to AUDIO SYSTEM SYMPTOM TROUBLESHOOTING - AUDIO UNIT WILL NOT TURN ON (NO INFORMATION DISPLAY AND NO SOUND) (WITH DISPLAY AUDIO) .
Check the connectors for poor connections or loose terminals.

1. Problem verification:
- 1. Turn the vehicle to the ON mode.

- 2. Turn on the audio system, and check for sound in each mode (AM/FM and CD).

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: No sound is heard in all modes

The failure is duplicated in all modes, go to step 2.

NO: No sound is heard in AM/FM mode

Refer to Audio System Symptom Troubleshooting - Poor AM or FM radio reception or interference(With Normal Audio) , & Audio System Symptom Troubleshooting - Poor AM or FM radio reception or interference(Without Navigation, With Display Audio) .

NO: No sound is heard in CD mode

Refer to AUDIO SYSTEM SYMPTOM TROUBLESHOOTING - AUDIO DISC DOES NOT PLAY .
2. Determine possible failure area (volume level, others):
- 1. Check that the volume 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):
- 1. Go into the System Diagnostic Mode, and use the Speaker Check diagnosis to check the speakers. Refer to AUDIO SYSTEM DIAGNOSTIC MODE , & AUDIO SYSTEM SOUND QUALITY DIAGNOSIS .

Did all speakers produce a tone?

YES

Replace the audio unit. Refer to AUDIO UNIT REMOVAL & INSTALLATION(WITH DISPLAY AUDIO) , & AUDIO UNIT REMOVAL & INSTALLATION(WITH NORMAL AUDIO) .

NO: No sound is heard from all the speakers

Go to step 4.

NO: No sound is heard from some of the speaker(s)

Go to step 11.

4. Fuse check:

- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Check the following fuses.

Fuse	No. A13 (20 A)
Location	Under-hood fuse/relay box

Is the fuse OK?

YES

Go to step 5.

Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. A13 (20 A) fuse circuit.

5. Open wire check (+B AUDIO AMP line):

- 1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode

Test point 1	Stereo amplifier connector A (18P) No. 3. Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS
Test point 2	Body ground

Is there battery voltage?

YES

The +B AUDIO AMP wire is OK. Go to step 6.

Repair an open in the wire between the No. A13 (20 A) fuse in the under-hood fuse/relay box and the stereo amplifier.

6. Open wire check (GND line):

- 1. Turn the vehicle to the ON mode.

- 2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode

Test point 1	Stereo amplifier connector A (18P) No. 1. Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS
Test point 2	Body ground

Is there less than 0.2 V?

YES

The GND wire is OK. Go to step 7.

Repair an open in the wire between the stereo amplifier and body ground (G503).

7. Determine possible failure area (SWD+B line, others):

- 1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode


Test point 1	Stereo amplifier connector B (24P) No. 13. Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS
Test point 2	Body ground

Is there battery voltage?

YES

The SWD+B wire is OK. Go to step 8.

Go to step 9.

8. Stereo amplifier check (substitution):
- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Substitute a known-good stereo amplifier. Refer to STEREO AMPLIFIER REMOVAL & INSTALLATION .

Does the symptom go away?

YES

Replace the original stereo amplifier. Refer to STEREO AMPLIFIER REMOVAL & INSTALLATION .

NO

Replace the audio unit. Refer to AUDIO UNIT REMOVAL & INSTALLATION(WITH DISPLAY AUDIO) , & AUDIO UNIT REMOVAL & INSTALLATION(WITH NORMAL AUDIO) .

9. Open wire check (SWD+B line):

- 1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode


Test point 1	Audio unit connector A (24P) No. 21. Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)
Test point 2	Body ground

Is there battery voltage?

YES

Repair an open in the wire between the stereo amplifier and the audio unit.

The SWD+B wire is not open. Go to step 10.

10. Shorted wire check (SWD+B line):

- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Disconnect the following connectors.

NOTE: Eject the disc before disconnecting the audio unit to prevent damaging the CD player's load mechanism.

Audio unit connector A (24P)

Stereo amplifier connector B (24P)

- 3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode

	Audio unit connector A (24P): disconnected
	Stereo amplifier connector B (24P): disconnected
Test point 1	Audio unit connector A (24P) No. 21. Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)
Test point 2	Body ground

Is there continuity?

YES

Repair a short in the wire between the stereo amplifier and the audio unit.

Replace the audio unit. Refer to AUDIO UNIT REMOVAL & INSTALLATION(WITH DISPLAY AUDIO) , & AUDIO UNIT REMOVAL & INSTALLATION(WITH NORMAL AUDIO) .

11. Shorted wire check (SPKR lines, TWEETER lines, SUB WOOFER lines):

- 1. Turn the vehicle to the OFF (LOCK) mode.

- 2. Disconnect the following connector.

Stereo amplifier connector A (18P)

- 3. Check for continuity between these test points and body ground individually.

Test condition	Vehicle OFF (LOCK) mode
	Stereo amplifier connector A (18P): disconnected

Connector	Terminal
Stereo amplifier connector A (18P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS	No. 13
	No. 6
	No. 12
	No. 5
	No. 14
	No. 7
	No. 15
	No. 8
	No. 16
	No. 9
	No. 17
	No. 10
	No. 4
	No. 2

Is there continuity?

YES

Repair a short to body ground in the wire(s) between the stereo amplifier and the speaker(s).

The SPKR, the TWEETER, and the SUB WOOFER wires are not shorted to ground. Go to step 12.

12. Determine possible failure area (speaker, others) 1:
- 1. Check the speaker(s) with no sound for any damage.

Is there any damage?

YES

Replace the faulty speaker(s). Refer to REMOVAL & INSTALLATION .

NO

Go to step 13.
13. Determine possible failure area (speaker, others) 2:
- 1. Test the speaker(s). Refer to TEST .

Is the speaker(s) OK?

YES

Go to step 14.

NO

Replace the faulty speaker(s). Refer to REMOVAL & INSTALLATION .

14. Open wire check (SPKR lines, TWEETER lines, SUB WOOFER lines):

- 1. Reconnect the front door speaker 2P connector(s), the tweeter 2P connector, the rear speaker 2P connector(s), and the subwoofer 2P connector.

- 2. Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Stereo amplifier connector A (18P): disconnected

Test point 1: Stereo amplifier connector A (18P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS	Test point 2: Stereo amplifier connector A (18P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS	Resistance
No. 13	No. 6	About 4 Ω
No. 12	No. 5	About 4 Ω

Test point 1: Stereo amplifier connector A (18P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS	Test point 2: Stereo amplifier connector A (18P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS	Resistance
No. 14	No. 7	About 4 Ω
No. 15	No. 8	About 4 Ω
No. 16	No. 9	About 4 Ω
No. 17	No. 10	About 4 Ω
No. 4	No. 2	About 2 Ω

Is the resistance OK?

YES

The SPKR, the TWEETER, and the SUB WOOFER wires are OK. Go to step 15.

Repair an open in the wire between the stereo amplifier and the speaker(s).

15. Open wire check (PRE lines):

- 1. Disconnect the following connectors.

NOTE: Eject the disc before disconnecting the audio unit to prevent damaging the CD player's load mechanism.

Stereo amplifier connector B (24P)

Audio unit connector A (24P)

Audio unit connector B (8P)

- 2. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Stereo amplifier connector A (18P): disconnected
	Stereo amplifier connector B (24P): disconnected
	Audio unit connector A (24P): disconnected
	Audio unit connector B (8P): disconnected

Test point 1: Audio unit connector A (24P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)	Test point 2: Stereo amplifier connector B (24P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS
No. 15	No. 23
No. 16	No. 11
No. 19	No. 20
No. 20	No. 8
No. 5	No. 21
No. 6	No. 9
No. 9	No. 18
No. 10	No. 6

Test point 1: Audio unit connector B (8P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)	Test point 2: Stereo amplifier connector B (24P). Refer to STEREO AMPLIFIER CONNECTOR FOR INPUTS AND OUTPUTS
No. 5	No. 17
No. 7	No. 5

Is there continuity?

YES

The PRE wires are not open. Go to step 16.

There is an open in the wire(s) between the audio unit and the stereo amplifier. Replace the affected shielded harness.

16. Shorted wire check (PRE lines):

- 1. Check for continuity between these test points and body ground individually.

Test condition	Vehicle OFF (LOCK) mode
	Stereo amplifier connector A (18P): disconnected
	Stereo amplifier connector B (24P): disconnected
	Audio unit connector A (24P): disconnected
	Audio unit connector B (8P): disconnected

Connector	Terminal
Audio unit connector A (24P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)	No. 15
	No. 16
	No. 19
	No. 20
	No. 5
	No. 6
	No. 9
	No. 10

Connector	Terminal
Audio unit connector B (8P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)	No. 5
	No. 7

Is there continuity?

YES

There is a short to body ground in the wire(s) between the stereo amplifier and the audio unit. Replace the affected shielded harness.

The PRE wires are not shorted to ground. Go to step 17.

17. Shorted wire check (SH PRE line to another lines)

- 1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Stereo amplifier connector A (18P): disconnected
	Stereo amplifier connector B (24P): disconnected
	Audio unit connector A (24P): disconnected
	Audio unit connector B (8P): disconnected

Test point 1 Audio unit connector A (24P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)	Test points 2 Audio unit connector A (24P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)
No. 17	No. 15, No. 16
No. 18	No. 19, No. 20
No. 7	No. 5, No. 6
No. 8	No. 9, No. 10

Test point 1 Audio unit connector B (8P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)	Test points 2 Audio unit connector B (8P). Refer to AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH DISPLAY AUDIO) , & AUDIO UNIT CONNECTOR FOR INPUTS AND OUTPUTS(WITH NORMAL AUDIO)
No. 6	No. 5, No. 7

Is there continuity between any of the terminals?

YES

There is a short in the wires between the stereo amplifier and the audio unit. Replace the affected shielded harness.

The SH PRE wires and the PRE wires are OK. Go to step 18.

18. Stereo amplifier check (substitution):
- 1. Substitute a known-good stereo amplifier. Refer to STEREO AMPLIFIER REMOVAL & INSTALLATION .

- 2. Reconnect all the connectors, and recheck.

Does the symptom go away?

YES

Substitute a known-good stereo amplifier. Refer to STEREO AMPLIFIER REMOVAL & INSTALLATION .

NO

Replace the audio unit. Refer to AUDIO UNIT REMOVAL & INSTALLATION(WITH DISPLAY AUDIO) , & AUDIO UNIT REMOVAL & INSTALLATION(WITH NORMAL AUDIO) .