Audio-Navigation System DTC: 2705(KA models) (2013 2014 2015)

DTC 2705  : HFL Diag

NOTE: 

• Check the vehicle battery condition first .
• This navigation DTC sets when NG is indicated in the HFT (HFL) diagnosis (the HFL icon is red in the System Link).
• 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. Press the engine start/stop button to select the OFF mode and then select the ON mode.

   -3. Check for hard error codes .

   Is DTC 2705 indicated?

   YES 

   The failure is duplicated, go to step 2.

   NO 

   Intermittent failure, the system is OK at this time.

2. HFT diagnosis check 1

   -1. Select the HFT in the Unit Check menu, and check GA-NET status .

   Is GA-NET OK indicated?

   YES 

   Go to step 3.

   NO 

   Go to HFL does not respond (with navigation) troubleshooting .

3. HFT diagnosis check 2

   -1. Select the HFT in the Unit Check menu, and check DESIP status .

   Is DESIP OK indicated?

   YES 

   Go to step 4.

   NO 

   Go to step 5.

4. HandsFreeLink system DTC check

   -1. Select the HFT in the Unit Check menu, and check for HFL DTCs .

   Are there any HFL DTCs indicated?

   YES 

   Go to indicated HFL DTC troubleshooting.

   NO 

   Replace the audio-navigation unit .

5. Shorted wire check (HFT-HIP/NAVI COMM lines) 1

   -1. Press the engine start/stop button to select the OFF mode.

   -2. Disconnect the following connectors.

   HandsFreeLink control unit 32P connector

   AcuraLink control unit (XM receiver) connector A (32P)

   -3. Check for continuity between these test points and body ground individually.

   Test condition	OFF mode
   	HandsFreeLink control unit 32P connector: disconnected
   	AcuraLink control unit (XM receiver) connector A (32P): disconnected

   Connector	Test circuit	Terminal
   HandsFreeLink control unit 32P connector	HFT-HIP/NAVI COMM3	No. 10 (RED)
   	HFT-HIP/NAVI COMM4	No. 11 (GRN)
   	HFT-HIP/NAVI COMM2	No. 26 (WHT)
   	HFT-HIP/NAVI COMM1	No. 27 (BLK)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

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

   NO 

   The HFT-HIP/NAVI COMM wires are not shorted to ground. Go to step 6.

6. Shorted wire check (HFT-HIP/NAVI COMM lines) 2

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

   Test condition	OFF mode
   	HandsFreeLink control unit 32P connector: disconnected
   	AcuraLink control unit (XM receiver) connector A (32P): disconnected

   Test circuits	Connector: HandsFreeLink control unit 32P connector
   	Test point 1	Test points 2
   SH HFT-HIP/NAVI COMM to HFT-HIP/NAVI COMM3, HFT-HIP/NAVI COMM4, HFT-HIP/NAVI COMM2, HFT-HIP/NAVI COMM1	No. 9 (GRY)	No. 10 (RED), No. 11 (GRN), No. 26 (WHT), No. 27 (BLK)
   HFT-HIP/NAVI COMM3 to HFT-HIP/NAVI COMM4, HFT-HIP/NAVI COMM2, HFT-HIP/NAVI COMM1	No. 10 (RED)	No. 11 (GRN), No. 26 (WHT), No. 27 (BLK)
   HFT-HIP/NAVI COMM4 to HFT-HIP/NAVI COMM2, HFT-HIP/NAVI COMM1	No. 11 (GRN)	No. 26 (WHT), No. 27 (BLK)
   HFT-HIP/NAVI COMM2 to HFT-HIP/NAVI COMM1	No. 26 (WHT)	No. 27 (BLK)

   Courtesy of HONDA, U.S.A., INC.

   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 

   The HFT-HIP/NAVI COMM wires are not shorted in the wires. Go to step 7.

7. Open wire check (HFT-HIP/NAVI COMM lines)

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

   Test condition	OFF mode
   	HandsFreeLink control unit 32P connector: disconnected
   	AcuraLink control unit (XM receiver) connector A (32P): disconnected

   Test circuit	Test point 1:HandsFreeLink control unit 32P connector	Test point 2:AcuraLink control unit (XM receiver) connector A (32P)
   HFT-HIP/NAVI COMM3	No. 10 (RED)	No. 27 (RED)
   HFT-HIP/NAVI COMM4	No. 11 (GRN)	No. 26 (GRN)
   HFT-HIP/NAVI COMM2	No. 26 (WHT)	No. 24 (WHT)
   HFT-HIP/NAVI COMM1	No. 27 (BLK)	No. 25 (BLK)

   Courtesy of HONDA, U.S.A., INC.

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The HFT-HIP/NAVI COMM wires are OK. Go to step 8.

   NO 

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

8. AcuraLink control unit (XM receiver) check

   -1. Substitute a known-good HandsFreeLink control unit .

   -2. Reconnect all the connectors.

   -3. Clear the hard error codes .

   -4. Press the engine start/stop button to select the OFF mode and then select the ON mode.

   -5. Check for hard error codes .

   Is DTC 2705 indicated?

   YES 

   Replace the AcuraLink control unit (XM receiver) .

   NO 

   Replace the original HandsFreeLink control unit.