Voice guidance cannot be heard, is broken up, or there is static

Voice guidance cannot be heard, is broken up, or there is static 

NOTE: 

• Check the vehicle battery condition first - Refer to:

  Battery Test (2014 2015)

  Battery Test (2016 2017 2018 2019 2020) .

• Check the connectors for poor connections or loose terminals.

1. Determine possible failure area (volume settings, others)

   -1. Turn the vehicle to the ON mode.

   - 2. Check the volume and voice feedback setting for the navigation system in set-up.

   Is either set to OFF?

   YES 

   Set the voice feedback to ON, and select an audible level for the volume.

   NO 

   Go to step 2.

2. Problem verification

   -1. Check the navigation voice guidance output.

   Does the system output the voice guidance?

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   The failure is duplicated, go to step 3.

3. Determine possible failure area (voice guidance output circuit, others)

   -1. Do the Speaker Check and make sure center speaker sound levels are normal.

   Does the audio system work normally and is the audio output from the speaker normal when doing the speaker checkΩ

   YES 

   Go to step 4.

   NO: The sound is cannot be heard in all speakers

   Go to: Audio System Symptom Troubleshooting - No sound is heard from all the speakers (display is normal) troubleshooting .

   NO: The sound is cannot be heard in front center speaker

   Go to: Audio System Symptom Troubleshooting - Audio system sound is weak or distorted (display is normal) troubleshooting .

4. Shorted wire check (NAVI L CH line)

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

   - 2. Disconnect the following connectors.

   Audio-navigation unit connector H (16P)

   Stereo amplifier connector B (28P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector H (16P): disconnected
   	Stereo amplifier connector B (28P): disconnected
   Test circuit	NAVI L CH
   Test point 1	Audio-navigation unit connector H (16P) No. 10 (RED)
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short to body ground in the wire between the audio-navigation unit and the stereo amplifier.

   NO 

   The NAVI L CH wire is not shorted to ground. Go to step 5.

5. Shorted wire check (NAVI lines)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector H (16P): disconnected
   	Stereo amplifier connector B (28P): disconnected

   Test circuits	Connector: Audio-navigation unit connector H (16P)
   	Test point 1	Test points 2
   SH NAVI to NAVI GND, NAVI L CH	No. 1 (GRY)	No. 2 (BLU), No. 10 (RED)
   NAVI GND to NAVI L CH	No. 2 (BLU)	No. 10 (RED)

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

   Is there continuity between any of the terminals?

   YES 

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

   NO 

   The NAVI wires are not shorted in the wires. Go to step 6.

6. Open wire check (NAVI L CH line, NAVI GND line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector H (16P): disconnected
   	Stereo amplifier connector B (28P): disconnected
   Test circuit	NAVI GND

   Test point 1	Audio-navigation unit connector H (16P) No. 2 (BLU)
   Test point 2	Stereo amplifier connector B (28P) No. 4 (BLU)

   Test circuit	NAVI L CH
   Test point 1	Audio-navigation unit connector H (16P) No. 10 (RED)
   Test point 2	Stereo amplifier connector B (28P) No. 19 (RED)

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

   Is there continuity?

   YES 

   The NAVI L CH and the NAVI GND wires are OK. Go to step 7.

   NO 

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

7. Stereo amplifier check (substitution)

   -1. Substitute a known-good stereo amplifier.

   - 2. Reconnect all the connectors, and recheck.

   Does the symptom go away?

   YES 

   Replace the original stereo amplifier .

   NO 

   Replace the audio-navigation unit .