YES : Replace the original XM receiver.
NO : Replace the HandsFreeLink control unit See HANDSFREELINK CONTROL UNIT
REMOVAL AND INSTALLATION or HANDSFREELINK CONTROL UNIT UPDATE .
15. Audio unit check:
ο‘
1. Turn the ignition switch to LOCK (0).
ο‘
2. 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 .
USB DEVICE DOES NOT FUNCTION (WITHOUT NAVIGATION)
Fig. 223: Audio System Symptom Troubleshooting Flowchart - USB Device Does Not Function (1 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig. 224: Audio System Symptom Troubleshooting Flowchart - USB Device Does Not Function (2 Of 2)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
ο¬
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CHECK THE VEHICLE BATTERY CONDITION FIRST .
Check the USB's specifications:
ο‘
ο‘
ο‘
Mass-storage class ready digital audio player with USB 2.0 port
More than 256 MB storage space
Supports MP3, WMA, and AAC (encoded with the iTunes) files, DRM
files are not supported
ο¬
Not all players and player functions work with the USB adapter. Please see
the Owner's Manual for more information. Always test the customer's USB
device in a known-good vehicle of the same year and trim (if possible).
Technologies change and are updated frequently which may result in USB
devices working in newer vehicles, but not in older vehicles of the same
model.
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If Unsupported Ver appears on the display, the vehicle is OK, there is a
software problem with the USB device.
Check the connectors for poor connections or loose terminals.
1. Determine possible failure area (GA-NET circuit, others):
ο‘
1. Turn the ignition switch to ON (II).
ο‘
2. Turn on the audio unit, and press the AUX button to select the USB mode.
NOTE:
Do not connect the USB device.
Is No Data displayed in the audio display unit?
YES : Go to step 2.
NO : Go to step 8.
2. Determine possible failure area (USB device, others):
ο‘
1. Turn the ignition switch to LOCK (0).
ο‘
2. Connect the customer's USB device to a known-good vehicle (same year/trim) that is equipped
with a USB adapter, and check the USB device operation.
Is the USB device working properly in the known-good vehicle?
YES : Go to step 3.
NO : See the Owner's Manual for details about the USB device requirements and approved file types.
3. Problem verification:
ο‘
1. On the customer's vehicle, connect the customer's USB device to the USB port located in the
center console.
ο‘
2. Turn the ignition switch to ON (II).
ο‘
3. Check the USB device operation in the customer's vehicle.
Does the USB device work properly in the customer's vehicle?
YES : Intermittent failure, the system is OK at this time. Inspect the connectors of the USB device, the
USB port, and the USB adapter for wear.
NO : The failure is duplicated, go to step 4.
4. Determine possible failure area (USB lines, USB adapter control unit):
ο‘
ο‘
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1. Turn the ignition switch to LOCK (0).
2. On the customer's vehicle, disconnect the customer's USB device from the USB port.
3. Disconnect the following connector.
USB adapter control unit connector B (5P)
4. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
ο‘
USB adapter control unit connector B (5P): disconnected
Connector: USB adapter control unit
B (5P)
Test point 2
Test circuit
Test point 1
USB SH to USB GND, USB DATA+, USB DATA-,
USB VBUS
No. 5
No. 1, No. 2, No. 3, No. 4
Fig. 225: Identifying USB Adapter Control Unit B (5P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity between any of the terminals?
YES : Go to step 5.
NO : Go to step 6.
5. USB adapter check:
ο‘
1. Disconnect the following connector.
USB adapter 5P connector
ο‘
2. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
- USB adapter control unit connector B (5P): disconnected
USB adapter 5P connector: disconnected
Connector: USB adapter 5P
connector
Test circuit
Test point
1
Test point 2
USB SH to USB GND, USB DATA+, USB DATA-, USB
VBUS
No. 1, No. 2, No. 3, No.
4
No. 5
Fig. 226: Identifying USB Adapter 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity between any of the terminals?
YES : REPLACE THE USB ADAPTER , then recheck.
NO : Replace the USB main harness, then recheck.
6. Determine possible failure area (USB lines, USB adapter control unit):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
USB adapter control unit connector B (5P): disconnected
Test point 1: USB adapter control unit
Test point 2: USB port 5P
connector
Test circuit
connector B (5P)
USB GND
No. 1
No. 4
USB
DATA+
No. 2
No. 3
USB
DATA-
No. 3
No. 2
USB VBUS
No. 4
No. 1
Fig. 227: Identifying USB Adapter Control Unit Connector B (5P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig. 228: Identifying USB Port 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : REPLACE THE USB ADAPTER CONTROL UNIT .
NO : Go to step 7.
7. USB adapter check:
ο‘
1. Disconnect the following connector.
USB adapter 5P connector
ο‘
2. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
USB adapter control unit connector B (5P): disconnected
USB adapter 5P connector: disconnected
Test circuit Test point 1: USB adapter 5P connector Test point 2: USB port 5P connector
USB GND
USB DATA+
USB DATA-
USB VBUS
No. 1
No. 2
No. 3
No. 4
No. 4
No. 3
No. 2
No. 1
Fig. 229: Identifying USB Adapter 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig. 230: Identifying USB Port 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : Replace the USB main harness, then recheck.
NO : REPLACE THE USB ADAPTER , then recheck.
8. Determine possible failure area (GA +B line, others):
ο‘
1. Turn the ignition switch to LOCK (0).
ο‘
2. Measure the voltage between test points 1 and 2.
Test condition IG LOCK (0)
Test circuit GA +B
Test point 1 USB adapter control unit connector A (14P) No. 6 (RED)
Test point 2 Body ground
Fig. 231: Measuring Voltage Between Test Point USB Adapter Control Unit Connector A
(14P) No. 6 (RED) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES : The GA +B wire is OK. Go to step 10.
NO : Go to step 9.
9. Open wire check (GA +B line):
ο‘
1.
Measure the voltage between test points 1 and 2.
Test condition IG LOCK (0)
Test circuit GA +B
Test point 1 Audio unit connector C (14P) No. 6 (RED)
Test point 2 Body ground
Fig. 232: Measuring Voltage Between Test Point Audio Unit Connector C (14P) No. 6 (RED)
And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES : Repair an open or high resistance in the wire between the audio unit and the USB adapter control
unit.
NO : REPLACE THE AUDIO UNIT .
10. Determine possible failure area (GA GND line, others):
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 GA GND
Test point 1 USB adapter control unit connector A (14P) No. 10 (BLK)
Test point 2 Body ground
Fig. 233: Measuring Voltage Between Test Point USB Adapter Control Unit Connector A
(14P) No. 10 (BLK) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there less than 0.2 V?
YES : The GA GND wire is OK. Go to step 12.
NO : Go to step 11.
11. Open wire check (GA GND line):
ο‘
1. Measure the voltage between test points 1 and 2.
Test condition IG ON (II)
Test circuit GA GND
Test point 1 Audio unit connector C (14P) No. 10 (BLK)
Test point 2 Body ground
Fig. 234: Measuring Voltage Between Test Point Audio Unit Connector C (14P) No. 10 (BLK)
And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there any voltage?
YES : REPLACE THE AUDIO UNIT .
NO : Repair an open in the wire between the audio unit and the USB adapter control unit.
12. Open wire check (GA SYS ON line):
ο‘
ο‘
1. Turn the ignition switch to LOCK (0).
2. Disconnect the following connectors.
Audio unit connector C (14P)
USB adapter control unit connector A (14P)
3. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
ο‘
Audio unit connector C (14P): disconnected
USB adapter control unit connector A (14P): disconnected
Test circuit GA SYS ON
Test point 1 Audio unit connector C (14P) No. 5 (PNK)
Test point 2 USB adapter control unit connector A (14P) No. 5 (PNK)
Fig. 235: Checking For Continuity Between Test Point Audio Unit Connector C (14P) No. 5
(PNK) And USB Adapter Control Unit Connector A (14P) No. 5 (PNK)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The GA SYS ON wire is OK. Go to step 13.
NO : Repair an open in the wire between the audio unit and the USB adapter control unit.
13. Shorted wire check (GA BUS+ line, GA BUS- line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector C (14P): disconnected
USB adapter control unit connector A (14P): disconnected
Test circuit GA BUS-
Test point 1 Audio unit connector C (14P) No. 11 (PNK)
Test point 2 Body ground
Test circuit GA BUS+
Test point 1 Audio unit connector C (14P) No. 12 (BLU)
Test point 2 Body ground
Fig. 236: Checking For Continuity Between Test Point Audio Unit Connector C (14P) No. 12
(BLU) 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 USB adapter control
unit. Replace the affected shielded harness.
NO : The GA BUS+ and the GA BUS- wires are not shorted to ground. Go to step 14.
14. Shorted wire check (GA BUS+ line to GA BUS- line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector C (14P): disconnected
USB adapter control unit connector A (14P): disconnected
Test circuit GA BUS-, GA BUS+
Test point 1 Audio unit connector C (14P) No. 11 (PNK)
Test point 2 Audio unit connector C (14P) No. 12 (BLU)
Fig. 237: Checking For Continuity Between Test Point Audio Unit Connector C (14P) No. 11
(PNK) And No. 12 (BLU)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : There is a short in the wires between the audio unit and the USB adapter control unit. Replace the
affected shielded harness.
NO : The GA BUS+ and the GA BUS- wires are not shorted. Go to step 15.
15. Shorted wire check (SH GA BUS line to another lines):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector C (14P): disconnected
USB adapter control unit connector A (14P): disconnected
Test circuit SH GA BUS, GA BUS+
Test point 1 Audio unit connector C (14P) No. 4 (GRY)
Test point 2 Audio unit connector C (14P) No. 12 (BLU)
Test circuit SH GA BUS, GA BUS-
Test point 1 Audio unit connector C (14P) No. 4 (GRY)
Test point 2 Audio unit connector C (14P) No. 11 (PNK)
Fig. 238: Checking For Continuity Between Test Point Audio Unit Connector C (14P) No. 4
(GRY) And No. 11 (PNK)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : There is a short in the wires between the audio unit and the USB adapter control unit. Replace the
affected shielded harness.
NO : The SH GA BUS wire is OK. Go to step 16.
16. Open wire check (GA BUS+ line, GA BUS- line):
ο‘
1. Check for continuity between test points 1 and 2.
Test condition IG LOCK (0)
Audio unit connector C (14P): disconnected
USB adapter control unit A (14P): disconnected
Test circuit GA BUS-
Test point 1 Audio unit connector C (14P) No. 11 (PNK)
Test point 2 USB adapter control unit connector A (14P) No. 11 (PNK)
Test circuit GA BUS+
Test point 1 Audio unit connector C (14P) No. 12 (BLU)
Test point 2 USB adapter control unit connector A (14P) No. 12 (BLU)
Fig. 239: Checking For Continuity Between Test Point Audio Unit Connector C (14P) No. 12
(BLU) And USB Adapter Control Unit Connector A (14P) No. 12 (BLU)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES : The GA BUS+ and the GA BUS- wires are OK. Go to step 17.
NO : There is an open in the wire(s) between the audio unit and the USB adapter control unit. Replace the
affected shielded harness.
17. Audio unit check:
ο‘
1. SUBSTITUTE A KNOWN-GOOD USB ADAPTER CONTROL UNIT, AND RECHECK.
Does the symptom go away?
YES : Replace the original USB adapter control unit.
NO : REPLACE THE AUDIO UNIT .
USB INPUT SOUND IS LOW OR CANNOT BE HEARD (WITH NAVIGATION)
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
