DTC 2607: XM Diag

NOTE:

Check the vehicle 12 volt battery condition first .
This audio DTC sets when a problem (open or short) is detected in the GA-Net BUS (the XM icon is red in the System Links).
Before you troubleshoot, make sure to follow the General Troubleshooting Information - Refer to: How to Troubleshoot the Audio System Audio System Self-Diagnostic Function .
Check the connectors for poor connections or loose terminals.

1. Problem verification:
1. Clear the hard error codes - Refer to: How to Troubleshoot the Audio System Audio System Self-Diagnostic Function .

2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

3. Check for hard error codes - Refer to: How to Troubleshoot the Audio System Audio System Self-Diagnostic Function .

Is DTC 2607 indicated?

YES

The failure is duplicated, go to step 2.

NO

Intermittent failure, the system is OK at this time.

2. Determine possible failure area (GA+B line, others):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the following connector.

XM receiver connector A (14P)

3. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	XM receiver connector A (14P): disconnected
Test point 1	XM receiver connector A (14P) No. 6
Test point 2	Body ground

Is there battery voltage?

YES

The GA+B wire is OK. Go to step 5.

Go to step 3.

3. Open wire check (GA+B line):

1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	XM receiver connector A (14P): disconnected
Test point 1	Audio unit connector D (12P) No. 12 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Is there battery voltage?

YES

Repair an open in the wire between the audio unit and the XM receiver.

The GA+B wire is not open. Go to step 4.

4. Shorted wire check (GA+B line):

1. Disconnect the following connector.

Audio unit connector D (12P)

2. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	XM receiver connector A (14P): disconnected
	Audio unit connector D (12P): disconnected
Test point 1	Audio unit connector D (12P) No. 12 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Is there continuity?

YES

Repair a short to body ground in the wire between the audio unit and the XM receiver.

Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

5. Determine possible failure area (GA GND line, others):

1. Reconnect XM receiver connector A (14P).

2. Turn the vehicle to the ON mode.

3. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test point 1	XM receiver connector A (14P) No. 10
Test point 2	Body ground

Is there less than 0.2 V?

YES

The GA GND wire is OK. Go to step 7.

Go to step 6.

6. Open wire check (GA GND line):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
Test point 1	Audio unit connector D (12P) No. 6 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Is there any voltage?

YES

Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

Repair an open or high resistance in the wire between the audio unit and the XM receiver.

7. Determine possible failure area (GA SYS ON line, others):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
Test point 1	Audio unit connector D (12P) No. 8 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Is there battery voltage?

YES

The GA SYS ON wire is OK. Go to step 9.

Go to step 8.

8. Open wire check (GA SYS ON line):

1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
Test point 1	XM receiver connector A (14P) No. 5
Test point 2	Body ground

Is there battery voltage?

YES

Repair an open in the wire between the audio unit and the XM receiver.

Replace the XM receiver .

9. Audio unit check:

1. Turn the vehicle to the ON mode.

2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test point 1	Audio unit connector D (12P) No. 8 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Is there less than 0.2 V?

YES

Go to step 10.

Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

10. Shorted wire check (GA BUS+ line, GA BUS- line):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the following connectors.

Audio unit connector D (12P)

XM receiver connector A (14P)

Multi-information display unit connector A (32P)

3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio unit connector D (12P) No. 7 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Test point 1	Audio unit connector D (12P) No. 1 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Body ground

Is there continuity?

YES

There is a short to body ground in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.

The GA BUS+ and the GA BUS- wires are not shorted to ground. Go to step 11.

11. Shorted wire check (GA BUS+ line to GA BUS- line):

1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio unit connector D (12P) No. 7 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Audio unit connector D (12P) No. 1 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)

Is there continuity?

YES

There is a short in the wires between the audio unit and the XM receiver. Replace the affected shielded harness.

The GA BUS+ and the GA BUS- wires are not shorted. Go to step 12.

12. Shorted wire check (SH GA BUS line to another lines):

1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio unit connector D (12P) No. 2 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Audio unit connector D (12P) No. 7 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)

Test point 1	Audio unit connector D (12P) No. 2 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	Audio unit connector D (12P) No. 1 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)

Is there continuity?

YES

There is a short in the wires between the audio unit and the XM receiver. Replace the affected shielded harness.

The SH GA BUS wire is OK. Go to step 13.

13. Open wire check (GA BUS+ line, GA BUS- line):

1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio unit connector D (12P) No. 7 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	XM receiver connector A (14P) No. 12

Test point 1	Audio unit connector D (12P) No. 1 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
Test point 2	XM receiver connector A (14P) No. 11

Is there continuity?

YES

Replace the XM receiver .

There is an open in the wire(s) between the audio unit and the XM receiver. Replace the affected shielded harness.

NOTE:

Check the vehicle 12 volt battery condition first .
This navigation DTC sets when a problem (open or short) is detected in the GA-Net BUS (the XM icon is red in the System Links).
Before you troubleshoot, make sure to follow the General Troubleshooting Information .
Check any official Honda service website for more service information about the navigation system.
Check the connectors for poor connections or loose terminals.

1. Problem verification:
1. Clear the hard error codes .

2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

3. Check for hard error codes .

Is DTC 2607 indicated?

YES

The failure is duplicated, go to step 2.

NO

Intermittent failure, the system is OK at this time.

2. Determine possible failure area (GA+B line, others):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the following connector.

XM receiver connector A (14P)

3. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	XM receiver connector A (14P): disconnected
Test point 1	XM receiver connector A (14P) No. 6
Test point 2	Body ground

Is there battery voltage?

YES

The GA+B wire is OK. Go to step 5.

Go to step 3.

3. Open wire check (GA+B line):

1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	XM receiver connector A (14P): disconnected
Test point 1	Audio-navigation unit connector D (12P) No. 12
Test point 2	Body ground

Is there battery voltage?

YES

Repair an open in the wire between the audio-navigation unit and the XM receiver.

The GA+B wire is not open. Go to step 4.

4. Shorted wire check (GA+B line):

1. Disconnect the following connector.

Audio-navigation unit connector D (12P)

2. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	XM receiver connector A (14P): disconnected
	Audio-navigation unit connector D (12P): disconnected
Test point 1	Audio-navigation unit connector D (12P) No. 12
Test point 2	Body ground

Is there continuity?

YES

Repair a short to body ground in the wire between the audio-navigation unit and the XM receiver.

Replace the audio-navigation unit .

5. Determine possible failure area (GA GND line, others):

1. Reconnect XM receiver connector A (14P).

2. Turn the vehicle to the ON mode.

3. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test point 1	XM receiver connector A (14P) No. 10
Test point 2	Body ground

Is there less than 0.2 V?

YES

The GA GND wire is OK. Go to step 7.

Go to step 6.

6. Open wire check (GA GND line):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
Test point 1	Audio-navigation unit connector D (12P) No. 6
Test point 2	Body ground

Is there any voltage?

YES

Replace the audio-navigation unit .

Repair an open or high resistance in the wire between the audio-navigation unit and the XM receiver.

7. Determine possible failure area (GA SYS ON line, others):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
Test point 1	Audio-navigation unit connector D (12P) No. 8
Test point 2	Body ground

Is there battery voltage?

YES

The GA SYS ON wire is OK. Go to step 9.

Go to step 8.

8. Open wire check (GA SYS ON line):

1. Measure the voltage between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
Test point 1	XM receiver connector A (14P) No. 5
Test point 2	Body ground

Is there battery voltage?

YES

Repair an open in the wire between the audio-navigation unit and the XM receiver.

Replace the XM receiver .

9. Audio-navigation unit check:

1. Turn the vehicle to the ON mode.

2. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test point 1	Audio-navigation unit connector D (12P) No. 8
Test point 2	Body ground

Is there less than 0.2 V?

YES

Go to step 10.

Replace the audio-navigation unit .

10. Shorted wire check (GA BUS+ line, GA BUS- line):

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the following connectors.

Audio-navigation unit connector D (12P)

XM receiver connector A (14P)

Multi-information display unit connector A (32P)

3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio-navigation unit connector D (12P) No. 7
Test point 2	Body ground

Test point 1	Audio-navigation unit connector D (12P) No. 1
Test point 2	Body ground

Is there continuity?

YES

There is a short to body ground in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.

The GA BUS+ and the GA BUS- wires are not shorted to ground. Go to step 11.

11. Shorted wire check (GA BUS+ line to GA BUS- line):

1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio-navigation unit connector D (12P) No. 7
Test point 2	Audio-navigation unit connector D (12P) No. 1

Is there continuity?

YES

There is a short in the wires between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.

The GA BUS+ and the GA BUS- wires are not shorted. Go to step 12.

12. Shorted wire check (SH GA BUS line to another lines):

1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio-navigation unit connector D (12P) No. 2
Test point 2	Audio-navigation unit connector D (12P) No. 7

Test point 1	Audio-navigation unit connector D (12P) No. 2
Test point 2	Audio-navigation unit connector D (12P) No. 1

Is there continuity?

YES

There is a short in the wires between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.

The SH GA BUS wire is OK. Go to step 13.

13. Open wire check (GA BUS+ line, GA BUS- line):

1. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector D (12P): disconnected
	XM receiver connector A (14P): disconnected
	Multi-information display unit connector A (32P): disconnected
Test point 1	Audio-navigation unit connector D (12P) No. 7
Test point 2	XM receiver connector A (14P) No. 12

Test point 1	Audio-navigation unit connector D (12P) No. 1
Test point 2	XM receiver connector A (14P) No. 11

Is there continuity?

YES

Replace the XM receiver .

There is an open in the wire(s) between the audio-navigation unit and the XM receiver. Replace the affected shielded harness.