Audio-Navigation System DTC 2703

DTC 2703  : Aircon Diag

NOTE: 

• Check the vehicle 12 volt battery condition first .
• This navigation DTC sets when Connection NG is indicated in the Aircon diagnosis (the A/C icon is red in the System Links).
• Check for B-CAN DTCs and resolve them before troubleshooting.
• 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 2703 indicated?

   YES 

   The failure is duplicated, go to step 2.

   NO 

   Intermittent failure, the system is OK at this time.

2. Open wire check (B-CAN_H, B-CAN_L lines)

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

   -2. Disconnect the following connectors.

   Audio-navigation unit connector B (20P)

   Climate control unit connector A (32P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector B (20P): disconnected
   	Climate control unit connector A (32P): disconnected
   Test circuit 1
   Test point 1	Audio-navigation unit connector B (20P) No. 3
   Test point 2	Climate control unit connector A (32P) No. 24

   Test circuit 2
   Test point 1	Audio-navigation unit connector B (20P) No. 13
   Test point 2	Climate control unit connector A (32P) No. 23

   Is there continuity?

   YES 

   Replace the climate control unit .

   NO 

   Repair an open in the wire(s).