YES : REPLACE THE AUDIO-NAVIGATION UNIT .
NO : Update the PCM See PCM REMOVAL AND INSTALLATION or PCM UPDATE if it does
not have the latest software, or substitute a known-good PCM See PCM REMOVAL AND
INSTALLATION or PCM UPDATE , and recheck.
VOLUME DOES NOT INCREASE WITH SPEED (WITHOUT NAVIGATION)
Fig. 261: Audio System Symptom Troubleshooting Flowchart - Volume Does Not Increase With Speed
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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CHECK THE VEHICLE BATTERY CONDITION FIRST .
Check for B-CAN DTCs and resolve them before troubleshooting.
If possible, have the customer demonstrate their concern and compare it against a known-good vehicle.
Check the connectors for poor connections or loose terminals.
1. Problem verification:
1. Test-drive the vehicle at freeway speeds, and monitor if the volume increases, then compare it to
a known-good vehicle.
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Does the volume increase and, is it comparable to a known-good vehicle?
YES : Intermittent failure, the system is OK at this time. If the customer's concern is that the level of
volume change is not enough, refer to the OM to change the SVC level setting.
NO : The failure is duplicated, go to step 2.
2. Determine possible failure area (audio setting, others):
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1. Verify the SVC mode setting in the audio unit sound set-up.
Is the SVC set to off?
YES : Change the setting to SVC MID, and recheck.
NO : Go to step 3.
3. Determine possible failure area (audio unit, others):
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1. DO THE SELF-DIAGNOSTIC FUNCTION, AND USE THE VEHICLE SPEED PULSE
INDICATION.
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2. With the help of an assistant test-drive the vehicle, and watch the VSP signal.
Does the self-diagnostic function indicate a VSP signal?
YES : REPLACE THE AUDIO UNIT .
NO : Go to step 4.
4. Open wire check (B CAN-H line, B CAN-L line):
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1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connectors.
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Audio unit connector B (20P)
Gauge control module 32P connector
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3. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Gauge control module 32P connector: disconnected
Test circuit B CAN-H
Test point 1 Audio unit connector B (20P) No. 13 (PNK)
Test point 2 Gauge control module 32P connector No. 30 (PNK)
Test circuit B CAN-L
Test point 1 Audio unit connector B (20P) No. 3 (BLU)
Test point 2 Gauge control module 32P connector No. 31 (BLU)
Fig. 262: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 3
(BLU) And Gauge Control Module 32P Connector No. 31 (BLU)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : REPLACE THE AUDIO UNIT .
NO : Repair an open in the wire(s) between the audio unit and the gauge control module.
VOLUME IS TOO HIGH OR TOO LOW WHEN DRIVING AT FREEWAY SPEEDS
Fig. 263: Audio System Symptom Troubleshooting Flowchart - Volume Is Too High Or Too Low When
Driving At Freeway Speeds
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
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CHECK THE VEHICLE BATTERY CONDITION FIRST .
If possible, have the customer demonstrate their concern and compare it
against a known-good vehicle.
1. Problem verification:
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
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2015 Honda CR-V Owner's Manual
