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Table of Contents > 2. Symptom Tests > Audio Remote Switch Does Not Work Properly (Audio Unit Buttons Work) (With Multi-Information Display without Navigation)

Honda CR-V Audio System Troubleshooting & Testing ➜ Audio Remote Switch Does Not Work Properly (Audio Unit Buttons Work) (With Multi-Information Display without Navigation)

Test point 1 Audio-navigation unit connector E (16P) No. 9 (BLU)  
Test point 2 Multi-information display unit connector A (32P) No. 15 (BLU)  
Fig. 42: Checking For Continuity Between Test Point Audio-Navigation Unit Connector E  
(16P) No. 9 (BLU) And Multi-Information Display Unit Connector A (32P) No. 15 (BLU)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : The B CAN-H and the B CAN-L wires are OK. Go to step 10.  
NO : Repair an open in the wire(s) between the audio-navigation unit and the multi-information display  
unit.  
10. Audio-navigation unit check:  
ο‚‘
1. SUBSTITUTE A KNOWN-GOOD MULTI-INFORMATION DISPLAY UNIT , and  
recheck.  
Does the symptom go away?  
YES : Replace the original multi-information display unit.  
NO : REPLACE THE AUDIO-NAVIGATION UNIT .  
AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY (AUDIO UNIT BUTTONS WORK)  
(WITH MULTI-INFORMATION DISPLAY WITHOUT NAVIGATION)  
Fig. 43: Audio System Symptom Troubleshooting Flowchart - Audio Remote Switch Does Not Work  
Properly  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
NOTE:  



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.  
1. Determine possible failure area (audio system, others):  
ο‚‘
1. Turn the ignition switch to ON (II).  
ο‚‘
2. Check if any MID information appears on the multi-information display unit.  
Is there any information displayed?  
YES : Go to step 2.  
NO : Go to MULTI-INFORMATION DISPLAY UNIT DOES NOT WORK  
TROUBLESHOOTING.  
2. Problem verification:  
ο‚‘
1. Turn on the audio unit, and using the audio remote switch buttons, check if the multi-information  
display operates properly.  
Is the display operation OK?  
YES : Intermittent failure, the system is OK at this time.  
NO : The failure is duplicated, go to step 3.  
3. Determine possible failure area (B CAN lines, others):  
ο‚‘
1. DO THE SELF-DIAGNOSTIC FUNCTION, AND USE THE IN LINE DIAG IN THE  
DISPLAY DIAGNOSIS.  
NOTE:  
When specific button(s) does not work normally, try with the specific  
button(s).  
Does the Display Diagnosis start, and is the audio remote switch connection OK?  
YES : Go to step 9.  
NO : Go to step 4.  
4. Determine possible failure area (audio remote/multi-information display switch, others):  
ο‚‘
1. Turn the ignition switch to LOCK (0).  
2. Disconnect the following connector.  
ο‚‘
Audio remote/multi-information display switch 12P connector  
ο‚‘
3. DO THE AUDIO REMOTE/MULTI-INFORMATION DISPLAY SWITCH TEST .  
Is the audio remote/multi-information display switch OK?  
YES : Go to step 5.  
NO : REPLACE THE AUDIO REMOTE/MULTI-INFORMATION DISPLAY SWITCH .  
5. Shorted wire check (AUDIO REMOTE SW line, TFT INFO line):  
ο‚‘
ο‚‘
1. Disconnect the following connector.  
Multi-information display unit connector A (32P)  
2. Check for continuity between test points 1 and 2.  
Test condition IG LOCK (0)  
Audio remote/multi-information display switch 12P connector: disconnected  
Multi-information display unit connector A (32P): disconnected  
Test circuit AUDIO REMOTE SW  
Test point 1 Multi-information display unit connector A (32P) No. 6 (PNK)  
Test point 2 Body ground  
Test circuit TFT INFO  
Test point 1 Multi-information display unit connector A (32P) No. 7 (PUR)  
Test point 2 Body ground  
Fig. 44: Checking For Continuity Between Test Point Multi-Information Display Unit  
Connector A (32P) No. 7 (PUR) And Body Ground  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : Repair a short to body ground in the wire(s) between the multi-information display unit and the  
audio remote switch. If the wires are OK, REPLACE THE CABLE REEL .  
NO : The AUDIO REMOTE SW and the TFT INFO wires are not shorted to ground. Go to step 6.  
6. Determine possible failure area (TFT INFO line, others):  
1. Reconnect the audio remote/multi-information display switch, and measure the resistance between  
test points 1 and 2 as specified in the table.  
Test condition IG LOCK (0)  
Multi-information display unit connector A (32P): disconnected  
Test circuit AUDIO REMOTE SW, REMOTE SW GND  
Test point 1 Multi-information display unit connector A (32P) No. 6 (PNK)  
Test point 2 Multi-information display unit connector A (32P) No. 23 (BRN)  
Button held  
down  
VOL  
DOWN  
No button  
pressed  
VOL UP  
LEFT  
RIGHT  
SOURCE  
About 99 About 357 About 775 About 1.7  
ohms ohms ohms kohms  
About 3.7  
kohms  
About 10  
kohms  
Resistance  
Fig. 45: Measuring Resistance Between Test Point Multi-Information Display Unit Connector  
A (32P) No. 6 (PNK) And No. 23 (BRN)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is the resistance OK?  
YES : Go to step 7.  
NO : Go to step 8.  
7. Open wire check (TFT INFO line):  
1. Measure the resistance between test points 1 and 2 as specified in the table.  
Test condition IG LOCK (0)  
Multi-information display unit connector A (32P): disconnected  
Test circuit TFT INFO, REMOTE SW GND  
Test point 1 Multi-information display unit connector A (32P) No. 7 (PUR)  
Test point 2 Multi-information display unit connector A (32P) No. 23 (BRN)  
Button held down  
MENU  
DISPLAY No button pressed  
Resistance  
About 33 ohms About 363 ohms No continuity  
Fig. 46: Measuring Resistance Between Test Point Multi-Information Display Unit Connector  
A (32P) No. 7 (PUR) And No. 23 (BRN)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is the resistance OK?  
YES : REPLACE THE MULTI-INFORMATION DISPLAY UNIT .  
NO : Repair an open in the wire between the multi-information display unit and the audio remote switch.  
If the wire is OK, REPLACE THE CABLE REEL .  
8. Determine possible failure area (AUDIO REMOTE SW line, REMOTE SW GND line):  
1. Measure the resistance between test points 1 and 2 as specified in the table.  
Test condition IG LOCK (0)  
Multi-information display unit connector A (32P): disconnected  
Test circuit TFT INFO, REMOTE SW GND  
Test point 1 Multi-information display unit connector A (32P) No. 7 (PUR)  
Test point 2 Multi-information display unit connector A (32P) No. 23 (BRN)  
Button held down  
MENU  
DISPLAY No button pressed  
Resistance  
About 33 ohms About 363 ohms No continuity  
Fig. 47: Measuring Resistance Between Test Point Multi-Information Display Unit Connector  
A (32P) No. 7 (PUR) And No. 23 (BRN)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is the resistance OK?  
YES : Repair an open in the wire between the multi-information display unit and the audio remote switch.  
If the wire is OK, REPLACE THE CABLE REEL .  
NO : Repair an open in the wire between the multi-information display unit and the audio remote switch.  
If the wire is OK, REPLACE THE CABLE REEL .  
9. Open wire check (B CAN-H line, B CAN-L line):  
ο‚‘
1. Turn the ignition switch to LOCK (0).  
2. Disconnect the following connectors.  
ο‚‘
Audio unit connector B (20P)  
Multi-information display unit connector A (32P)  
3. Check for continuity between test points 1 and 2.  
Test condition IG LOCK (0)  
ο‚‘
Audio unit connector B (20P): disconnected  
Multi-information display unit connector A (32P): disconnected  
Test circuit B CAN-H  
Test point 1 Audio unit connector B (20P) No. 13 (PNK)  
Test point 2 Multi-information display unit connector A (32P) No. 31 (PNK)  
Test circuit B CAN-L  
Test point 1 Audio unit connector B (20P) No. 3 (BLU)  
Test point 2 Multi-information display unit connector A (32P) No. 15 (BLU)  
Fig. 48: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 3  
(BLU) And Multi-Information Display Unit Connector A (32P) No. 15 (BLU)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : The B CAN-H and the B CAN-L wires are OK. Go to step 10.  
NO : Repair an open in the wire(s) between the audio unit and the multi-information display unit.  
10. Audio unit check:  
ο‚‘
1. SUBSTITUTE A KNOWN-GOOD MULTI-INFORMATION DISPLAY UNIT , and  
recheck.  
Does the symptom go away?  
YES : Replace the original multi-information display unit.  
NO : REPLACE THE AUDIO UNIT .  
AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY (AUDIO UNIT BUTTONS WORK)  
(WITHOUT MULTI-INFORMATION DISPLAY AND NAVIGATION)  
reload full screen
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