Audio System Symptom Troubleshooting - Auxiliary input sound is low or cannot be heard(Without 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 unit using the auxiliary input.
• Check the connectors for poor connections or loose terminals.

1. Problem verification

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

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

   -3. Press the 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.

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.

3. 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.

4. Shorted wire check (AUX lines)

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

   -2. Disconnect the following connectors.

   Audio unit connector B (20P)

   Auxiliary jack assembly 5P connector

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

   Test condition	OFF mode
   	Audio unit connector B (20P): disconnected
   	Auxiliary jack assembly 5P connector: disconnected

   Connector	Test circuit	Terminal
   Audio unit connector B (20P)	AUX GND	No. 6 (YEL)
   	AUX SGND	No. 8 (PNK)
   	AUX DET	No. 16 (WHT)
   	AUX R CH	No. 17 (BLU)
   	AUX L CH	No. 18 (GRN)

   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 unit and the auxiliary jack assembly. Repair or replace the affected harness.

   NO 

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

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 unit connector B (20P): disconnected
   	Auxiliary jack assembly 5P connector: disconnected
   Test circuit	AUX R CH, SH AUX
   Test point 1	Audio unit connector B (20P) No. 17 (BLU)
   Test point 2	Audio unit connector B (20P) No. 7 (GRY)

   Test circuit	AUX L CH, SH AUX
   Test point 1	Audio unit connector B (20P) No. 18 (GRN)
   Test point 2	Audio unit connector B (20P) No. 7 (GRY)

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

   Is there continuity?

   YES 

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

   NO 

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

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 unit connector B (20P): disconnected
   	Auxiliary jack assembly 5P connector: disconnected
   Test circuit	AUX R CH, AUX SGND
   Test point 1	Audio unit connector B (20P) No. 17 (BLU)
   Test point 2	Audio unit connector B (20P) No. 8 (PNK)

   Test circuit	AUX L CH, AUX SGND
   Test point 1	Audio unit connector B (20P) No. 18 (GRN)
   Test point 2	Audio unit connector B (20P) No. 8 (PNK)

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

   Is there continuity?

   YES 

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

   NO 

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

7. Open wire check (AUX lines)

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

   Test condition	OFF mode
   	Audio unit connector B (20P): disconnected
   	Auxiliary jack assembly 5P connector: disconnected

   Test circuit	Test point 1:Audio unit connector B (20P)	Test point 2:Auxiliary jack assembly 5P connector
   AUX GND	No. 6 (YEL)	No. 4 (YEL)
   AUX SGND	No. 8 (PNK)	No. 3 (PNK)
   AUX DET	No. 16 (WHT)	No. 5 (WHT)
   AUX R CH	No. 17 (BLU)	No. 1 (BLU)
   AUX L CH	No. 18 (GRN)	No. 2 (GRN)

   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.

   NO 

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

8. Audio 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 unit .