USA Models

Navigation System DTC Troubleshooting: 2705

DTC 2705:

HFL Diag

USA Models

NOTE:

- Check the vehicle battery condition first Battery Test.
- This navigation DTC sets when a problem is detected in the COMM BUS (open or short) or in the HandsFreeLink control unit.
- Before you troubleshoot, make sure to follow the General Troubleshooting Information How To Troubleshoot The Navigation System.

1. Clear the hard error code.

2. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or press the engine start/stop button to select the ON mode.

3. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode.

4. Check the System Links.

Is the XM (HIP) icon red?

YES -

Do the DTC 1801 troubleshooting 1801.

NO -

Go to step 5.

5. Check the XM (HIP) System Link.

Is the HFL icon red?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time.

6. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or press the engine start/stop button to select the ON mode.

7. Do the HandsFreeLink system Self-Diagnostic Function.

Do you hear the message "The hands free system is OK"?

YES -

Go to step 8.

NO -

Check for HFL DTCs. If the HFL does not respond, do the HandsFreeLink control unit input test Testing and Inspection.

8. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

9. Disconnect the HandsFreeLink control unit 28P connector and AcuraLink control unit (XM receiver) connector A (32P).

10. Check for continuity between the HandsFreeLink control unit 28P connector and body ground according to the table.









Is there continuity?

YES -

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

NO -

Go to step 11.

11. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the HandsFreeLink control unit and the AcuraLink control unit (XM receiver). Replace the affected shielded harness.

NO -

Go to step 12.

12. Check for continuity between the HandsFreeLink control unit 28P connector and AcuraLink control unit (XM receiver) connector A (32P) according to the table.













Is there continuity?

YES -

Replace the HandsFreeLink control unit Service and Repair.

NO -

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