YES : Repair a short to body ground in the wire between the audio unit and the audio remote switch. If
the wire is OK, REPLACE THE CABLE REEL .
NO : The AUDIO REMOTE SW wire is not shorted to ground. Go to step 4.
4. Open wire check (AUDIO REMOTE SW line, REMOTE SW GND line):
ο‘
1. Reconnect the audio remote switch, and measure the resistance between test points 1 and 2 as
specified in the table.
Test condition IG LOCK (0)
Audio unit connector A (24P): disconnected
Test circuit AUDIO REMOTE SW, REMOTE SW GND
Test point 1 Audio unit connector A (24P) No. 22 (PNK)
Test point 2 Audio unit connector A (24P) No. 11 (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. 51: Measuring Resistance Between Test Point Audio Unit Connector A (24P) No. 22
(PNK) And No. 11 (BRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is the resistance OK?
YES : REPLACE THE AUDIO UNIT .
NO : Repair an open in the wire(s) between the audio unit and the audio remote switch. If the wires are
OK, REPLACE THE CABLE REEL .
AUDIO SYSTEM INFORMATION DOES NOT DISPLAY ON THE CENTER DISPLAY
Fig. 52: Audio System Symptom Troubleshooting Flowchart - Audio System Information Does Not
Display On Center Display
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
ο¬
ο¬
CHECK THE VEHICLE BATTERY CONDITION FIRST .
Check the connectors for poor connections or loose terminals.
1. Problem verification:
ο‘
1. Turn the ignition switch to ON (II).
2. Turn on the audio unit, and check the audio information on the center display unit.
ο‘
Does the audio information display properly?
YES : Intermittent failure, the system is OK at this time.
NO : The failure is duplicated, go to step 2.
2. Fuse check:
ο‘
1. Turn the ignition switch to LOCK (0).
2. Check the following fuse.
ο‘
Fuse No. A29 (10 A)
Location Under-hood fuse/relay box
Is the fuse OK?
YES : Go to step 3.
NO : Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. A29 (10 A) fuse
circuit.
3. Open wire check (+B BACK UP line):
ο‘
1. Measure the voltage between test points 1 and 2.
Test condition IG LOCK (0)
Test circuit +B BACK UP
Test point 1 Center display unit 12P connector No. 1 (RED)
Test point 2 Body ground
Fig. 53: Measuring Voltage Between Test Point 1 Center Display Unit 12P Connector No. 1
(RED) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES : The +B BACK UP wire is OK. Go to step 4.
NO : Repair an open or high resistance in the wire between the No. A29 (10 A) fuse in the under-hood
fuse/relay box and the center display unit.
4. Open wire check (GND line):
ο‘
1. Turn the ignition switch to ON (II).
ο‘
2. Measure the voltage between test points 1 and 2.
Test condition IG ON (II)
Test circuit GND
Test point 1 Center display unit 12P connector No. 10 (BRN)
Test point 2 Body ground
Fig. 54: Measuring Voltage Between Test Point Center Display Unit 12P Connector No. 10
(BRN) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there less than 0.2 V?
YES : The GND wire is OK. Go to step 5.
NO : Repair an open or high resistance in the wire between the center display unit and body ground
(G502).
5. Shorted wire check (DUET CONT line):
ο‘
1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connectors.
ο‘
Audio unit connector B (20P)
Center display unit 12P connector
ο‘
3. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Center display unit 12P connector: disconnected
Test circuit DUET CONT
Test point 1 Center display unit 12P connector No. 3 (LT GRN)
Test point 2 Body ground
Fig. 55: Checking For Continuity Between Test Point Center Display Unit 12P Connector No.
3 (LT GRN) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : Repair a short to body ground in the wire between the center display unit and the audio unit.
NO : The DUET CONT wire is not shorted to ground. Go to step 6.
6. Open wire check (DUET CONT line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Center display unit 12P connector: disconnected
Test circuit DUET CONT
Test point 1 Audio unit connector B (20P) No. 14 (LT GRN)
Test point 2 Center display unit 12P connector No. 3 (LT GRN)
Fig. 56: Checking For Continuity Between Audio Unit Connector B (20P) No. 14 (LT GRN)
And Center Display Unit 12P Connector No. 3 (LT GRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The DUET CONT wire is OK. Go to step 7.
NO : Repair an open in the wire between the audio unit and the center display unit.
7. Shorted wire check (DUET RX line, DUET TX line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Center display unit 12P connector: disconnected
Test circuit DUET RX
Test point 1 Audio unit connector B (20P) No. 4 (RED)
Test point 2 Body ground
Test circuit DUET TX
Test point 1 Audio unit connector B (20P) No. 5 (GRN)
Test point 2 Body ground
Fig. 57: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 5
(GRN) And Body Ground
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 center display unit.
Replace the affected shielded harness.
NO : The DUET RX and the DUET TX wires are not shorted to ground. Go to step 8.
8. Shorted wire check (DUET RX line to DUET TX line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Center display unit 12P connector: disconnected
Test circuit DUET RX, DUET TX
Test point 1 Audio unit connector B (20P) No. 4 (RED)
Test point 2 Audio unit connector B (20P) No. 5 (GRN)
Fig. 58: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 4
(RED) And No. 5 (GRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : There is a short in the wires between the audio unit and the center display unit. Replace the
affected shielded harness.
NO : The DUET RX and the DUET TX wires are not shorted. Go to step 9.
9. Shorted wire check (SH DUET 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
Center display unit 12P connector: disconnected
Test circuit SH DUET, DUET RX
Test point 1 Audio unit connector B (20P) No. 15 (GRY)
Test point 2 Audio unit connector B (20P) No. 4 (RED)
Test circuit SH DUET, DUET TX
Test point 1 Audio unit connector B (20P) No. 15 (GRY)
Test point 2 Audio unit connector B (20P) No. 5 (GRN)
Fig. 59: Checking For Continuity Between Test Point 1 Audio Unit Connector B (20P) No. 15
(GRY) And No. 5 (GRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : There is a short in the wires between the audio unit and the center display unit. Replace the
affected shielded harness.
NO : The SH DUET wire is OK. Go to step 10.
10. Open wire check (DUET RX line, DUET TX line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector B (20P): disconnected
Center display unit 12P connector: disconnected
Test circuit DUET RX
Test point 1 Audio unit connector B (20P) No. 4 (RED)
Test point 2 Center display unit 12P connector No. 6 (RED)
Test circuit DUET TX
Test point 1 Audio unit connector B (20P) No. 5 (GRN)
Test point 2 Center display unit 12P connector No. 5 (GRN)
Fig. 60: Checking For Continuity Between Test Point Audio Unit Connector B (20P) No. 5
(GRN) And Center Display Unit 12P Connector No. 5 (GRN)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The DUET RX and the DUET TX wires are OK. Go to step 11.
NO : There is an open in the wire(s) between the audio unit and the center display unit. Replace the
affected shielded harness.
11. Audio unit check:
ο‘
1. SUBSTITUTE A KNOWN-GOOD CENTER DISPLAY UNIT, AND RECHECK.
Does the symptom go away?
YES : Replace the original center display unit.
NO : REPLACE THE AUDIO UNIT .
AUDIO SYSTEM INFORMATION DOES NOT DISPLAY ON THE MULTI-INFORMATION
DISPLAY UNIT (WITH NAVIGATION)
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