Audio System Symptom Troubleshooting - Auxiliary input sound is low or cannot be heard(With Navigation) (2013 2014 2015)

Auxiliary input sound is low or cannot be heard

NOTE:

Check the vehicle battery condition first .
Use auxiliary stereo cables with 3.5 mm ends only.
Auxiliary accessories may be played on the audio-navigation unit using the auxiliary input.
Check the connectors for poor connections or loose terminals.

Problem verification
-1. Press the engine start/stop button to select the ON mode.

-2. Turn on the audio system, and connect an auxiliary accessory to the auxiliary input jack.

-3. Press the HDD/AUX button, and check the auxiliary audio source sound.

Is the sound normal?

YES

Intermittent failure, the system is OK at this time.

NO

The failure is duplicated, go to step 2.
Determine possible failure area (volume level, others)
-1. Make sure the auxiliary accessory volume is set to high.

Is the volume set to high?

YES

Go to step 3.

NO

Raise the auxiliary accessory volume to high. Make sure the audio unit volume is turned down before rechecking.
Determine possible failure area (auxiliary audio accessory, others)
-1. Substitute a known-good auxiliary audio accessory and/or auxiliary stereo cable, and recheck.

Does the auxiliary audio accessory operate properly?

YES

Original auxiliary audio accessory or auxiliary stereo cable is faulty.

NO

Go to step 4.

Shorted wire check (AUX lines)

-1. Press the engine start/stop button to select the OFF mode.

-2. Disconnect the following connectors.

Audio-navigation unit connector B (24P)

Auxiliary jack assembly 5P connector

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

Test condition	OFF mode
	Audio-navigation unit connector B (24P): disconnected
	Auxiliary jack assembly 5P connector: disconnected

Connector	Test circuit	Terminal
Audio-navigation unit connector B (24P)	AUX DET	No. 10 (WHT)
	AUX SGND	No. 11 (PNK)
	AUX L CH	No. 12 (GRN)
	AUX GND	No. 23 (YEL)
	AUX R CH	No. 24 (BLU)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short to body ground in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Repair or replace the affected harness.

The AUX wires are not shorted to ground. Go to step 5.

Shorted wire check (SH AUX line to another lines)

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

Test condition	OFF mode
	Audio-navigation unit connector B (24P): disconnected
	Auxiliary jack assembly 5P connector: disconnected
Test circuit	AUX R CH, SH AUX
Test point 1	Audio-navigation unit connector B (24P) No. 24 (BLU)
Test point 2	Audio-navigation unit connector B (24P) No. 22 (GRY)

Test circuit	AUX L CH, SH AUX
Test point 1	Audio-navigation unit connector B (24P) No. 12 (GRN)
Test point 2	Audio-navigation unit connector B (24P) No. 22 (GRY)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short in the wires between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.

The SH AUX wire is OK. Go to step 6.

Shorted wire check (AUX SGND line to another lines)

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

Test condition	OFF mode
	Audio-navigation unit connector B (24P): disconnected
	Auxiliary jack assembly 5P connector: disconnected
Test circuit	AUX R CH, AUX SGND
Test point 1	Audio-navigation unit connector B (24P) No. 24 (BLU)
Test point 2	Audio-navigation unit connector B (24P) No. 11 (PNK)

Test circuit	AUX L CH, AUX SGND
Test point 1	Audio-navigation unit connector B (24P) No. 12 (GRN)
Test point 2	Audio-navigation unit connector B (24P) No. 11 (PNK)

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

There is a short in the wires between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.

The AUX SGND wire is not shorted. Go to step 7.

Open wire check (AUX lines)

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

Test condition	OFF mode
	Audio-navigation unit connector B (24P): disconnected
	Auxiliary jack assembly 5P connector: disconnected

Test circuit	Test point 1:Audio-navigation unit connector B (24P)	Test point 2:Auxiliary jack assembly 5P connector
AUX DET	No. 10 (WHT)	No. 5 (WHT)
AUX SGND	No. 11 (PNK)	No. 3 (PNK)
AUX L CH	No. 12 (GRN)	No. 2 (GRN)
AUX GND	No. 23 (YEL)	No. 4 (YEL)
AUX R CH	No. 24 (BLU)	No. 1 (BLU)

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES

The AUX wires are OK. Go to step 8.

There is an open in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Repair or replace the affected harness.

Audio-navigation unit check
-1. Substitute a known-good auxiliary jack assembly .

-2. Reconnect all the connectors, and recheck.

Does the symptom go away?

YES

Replace the original auxiliary jack assembly.

NO

Replace the audio-navigation unit .