YES : The AUX wires are OK. Go to step 8.
NO : There is an open in the wire(s) between the audio-navigation unit and the auxiliary jack assembly.
Repair or replace the affected harness.
8. Audio-navigation unit check:
ο‘
1. SUBSTITUTE A KNOWN-GOOD AUXILIARY JACK ASSEMBLY , and recheck.
Does the symptom go away?
YES : Replace the original auxiliary jack assembly.
NO : REPLACE THE AUDIO-NAVIGATION UNIT .
AUXILIARY INPUT SOUND IS LOW OR CANNOT BE HEARD (WITHOUT NAVIGATION)
Fig. 98: Audio System Symptom Troubleshooting Flowchart - Auxiliary Input Sound Is Low Or Cannot
Be Heard
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
ο¬
ο¬
ο¬
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.
ο¬
Check the connectors for poor connections or loose terminals.
1. Problem verification:
1. Turn the ignition switch to ON (II).
ο‘
ο‘
ο‘
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):
ο‘
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):
ο‘
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):
ο‘
1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connectors.
ο‘
Audio unit connector B (20P)
Auxiliary jack assembly 5P connector
ο‘
3. Check for continuity between these test points and body ground individually.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Auxiliary jack assembly 5P connector: disconnected
Connector
Test circuit
Terminal
AUX GND No. 6 (LT GRN)
AUX SGND No. 8 (BLK)
Audio unit connector B (20P) AUX DET No. 16 (LT BLU)
AUX R CH No. 17 (RED)
AUX L CH No. 18 (WHT)
Fig. 99: Identifying Audio Unit Connector B (20P)
Courtesy of AMERICAN HONDA MOTOR CO., 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):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
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 (RED)
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 (WHT)
Test point 2 Audio unit connector B (20P) No. 7 (GRY)
Fig. 100: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 18
(WHT) And No. 7 (GRY)
Courtesy of AMERICAN HONDA MOTOR CO., 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):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
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 (RED)
Test point 2 Audio unit connector B (20P) No. 8 (BLK)
Test circuit AUX L CH, AUX SGND
Test point 1 Audio unit connector B (20P) No. 18 (WHT)
Test point 2 Audio unit connector B (20P) No. 8 (BLK)
Fig. 101: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 18
(WHT) And No. 8 (BLK)
Courtesy of AMERICAN HONDA MOTOR CO., 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):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Auxiliary jack assembly 5P connector: disconnected
Test
circuit
Test point 1: Audio unit connector B Test point 2: Auxiliary jack assembly 5P
(20P)
connector
AUX GND
No. 6 (LT GRN)
No. 4 (LT GRN)
AUX
SGND
No. 8 (BLK)
No. 3 (BLK)
AUX DET
AUX R CH
AUX L CH
No. 16 (LT BLU)
No. 17 (RED)
No. 18 (WHT)
No. 5 (LT BLU)
No. 1 (RED)
No. 2 (WHT)
Fig. 102: Identifying Audio Unit Connector B (20P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig. 103: Identifying Auxiliary Jack Assembly 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., 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:
ο‘
1. SUBSTITUTE A KNOWN-GOOD AUXILIARY JACK ASSEMBLY , and recheck.
Does the symptom go away?
YES : Replace the original auxiliary jack assembly.
NO : REPLACE THE AUDIO UNIT .
DISPLAY DOES NOT DIM OR BRIGHTEN WITH DIMMER (WITH MULTI-INFORMATION
DISPLAY)
Fig. 104: Audio System Symptom Troubleshooting Flowchart - Display Does Not Dim Or Brighten With
Dimmer
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
ο¬
ο¬
ο¬
ο¬
CHECK THE VEHICLE BATTERY CONDITION FIRST .
Check for B-CAN DTCs and resolve them before troubleshooting.
Check the connectors for poor connections or loose terminals.
The climate control unit 32P (black) connector and the HFL control unit
32P (grey) connector are the same shape. Make sure the correct connector
is connected to the applicable unit.
1. Problem verification:
ο‘
ο‘
ο‘
1. Turn the ignition switch to ON (II).
2. Turn the combination lighting switch to the parking light position.
3. Rotate the dashlights brightness controller knob several times.
Does the multi-information display brightness change?
YES : Intermittent failure, the system is OK at this time.
NO : The failure is duplicated, go to step 2.
2. Open wire check (B CAN-H line, B CAN-L line):
ο‘
ο‘
ο‘
1. Turn the combination lighting switch off.
2. Turn the ignition switch to LOCK (0).
3. Disconnect the following connectors.
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual
