Honda HR-V Owners & Service Manuals

Honda HR-V: Audio Unit Power Switch Will Not Turn ON (No Information Display And No Sound)

Honda HR-V (2015-2021) Service Manual / Accessories & Equipment / Audio Visual Systems - Testing & Troubleshooting / Symptom Troubleshooting / Audio Unit Power Switch Will Not Turn ON (No Information Display And No Sound)

NOTE:

  • Check the vehicle 12 volt battery condition first.
  • Check the connectors for poor connections or loose terminals.

1. Problem verification:

  1. Turn the vehicle to the ON mode.
  2. Press the POWER button on to see if the audio unit turns on.

Does the audio system operate properly, and does the audio sound normal?

YES

Intermittent failure, the system is OK at this time.

NO

The failure is duplicated, go to step 2.

2. Fuse check:

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Check the following fuses.

Audio Visual Systems - Testing & Troubleshooting

Are the fuses OK?

YES

Go to step 3.

NO

Replace the fuse (s), and recheck. If the fuse (s) blows again, check for a short in the No. B22 (10 A) fuse and/or the No. C37 (7.5 A) fuse circuits.

3. Open wire check (+B AUDIO line):

  1. Disconnect the following connector.

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

Audio unit connector A (24P)

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

Audio Visual Systems - Testing & Troubleshooting

Is there battery voltage?

YES

The +B AUDIO wire is OK. Go to step 4.

NO

Repair an open in the wire between the No. B22 (10 A) fuse in the under-hood fuse/relay box and the audio unit.

3. Open wire check (ACC line):

  1. Turn the vehicle to the ON mode.
  2. Measure the voltage between test points 1 and 2.

Audio Visual Systems - Testing & Troubleshooting

Is there battery voltage?

YES

The ACC wire is OK. Go to step 5.

NO

Repair an open in the wire between the No. C37 (7.5 A) fuse in the under-dash fuse/relay box and the audio unit.

5. Open wire check (GND line):

  1. Turn the vehicle to the OFF (LOCK) mode.
  2. Check for continuity between test points 1 and 2.

Audio Visual Systems - Testing & Troubleshooting

Is there continuity?

YES

The GND wire is OK. Go to step 6.

NO

Repair an open or high resistance in the wire between the audio unit and body ground (G404).

6. Audio unit check (substitution):

  1. Substitute a known-good audio panel - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
  2. Reconnect audio unit connector A (24P), and recheck.

Does the symptom go away?

YES

Replace the original audio panel.

NO

Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).

    READ NEXT:

     Auxiliary Input Sound Is Low Or Cannot Be Heard

    NOTE: Check the vehicle 12 volt battery condition first. Set the fader and the balance positions to the center. Use auxiliary stereo cables with 3.5 mm ends only. Check the connectors for poor co

     HDMI Device Does Not Function (With Navigation)

    NOTE: Check the vehicle 12 volt battery condition first. Check for B-CAN DTCs and resolve them before troubleshooting. Before doing this troubleshooting, make sure whether a parking brake is wor

     HDMI Device Does Not Function (Without Navigation)

    NOTE: Check the vehicle 12 volt battery condition first. Before doing this troubleshooting, make sure whether a parking brake is working properly and the electric parking brake indicator in the g

    SEE MORE:

     DTC Troubleshooting 81-13: Modulator-Control Unit Internal Circuit Malfunction

    NOTE: Before you troubleshoot, review the general troubleshooting information. 1. Problem verification: Turn the vehicle to the ON mode. Clear the DTC with the HDS. Turn the vehicle to the OFF (LOCK) mode. Test-drive the vehicle. NOTE: Drive the vehicle on the road, not on a lift. Check fo

     Hood Insulator Removal and Installation

    Removal & Installation 1. Hood Insulator - Remove 2. All Removed Parts - Install Install the parts in the reverse order of removal. HOOD LATCH REMOVAL AND INSTALLATION Removal & Installation 1. Front Grille Cover - Remove 2. Front Grille Center Stay - Remove 3. Hood Latch - Remove Rem

    © 2019-2024 Copyright www.hohrv2.com