With AcuraLink

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
This navigation DTC sets when a problem is detected in the connecting lines (open or short) or in the HandsFreeLink control unit.
Before you troubleshoot, make sure to follow the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Clear the hard error code (see HOW TO CLEAR ERROR HISTORY ).
Turn the ignition switch to LOCK (0), and then back to ON (II).
Go into the Diagnostic Menu, and select the Self-Diagnosis Mode in the Select Diagnosis Items menu (see SYSTEM DIAGNOSTIC MODE ).
Select the XM (HIP), then check the XM (HIP) System Link.
Are the XM (HIP). ECU and Navi icons red?

YES -Do the DTC 2704 troubleshooting (see DTC 2704: XM (HIP) DIAG ).

NO -Go to step 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.
Turn the ignition switch to LOCK (0).
Connect the HDS to the DLC (see GENERAL TROUBLESHOOTING INFORMATION ).
Turn the ignition switch to ON (II).
Check for DTCs with the HDS.
Are any HFL DTCs indicated?

YES -Do the HFL DTC troubleshooting.

NO -Go to step 10.
Do the B-CAN test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ), and check the communication with the HandsFreeLink control unit.
Does the HandsFreeLink control unit communicate with the HDS?

YES -Go to step 11.

NO -Go to HandsFreeLink control unit troubleshooting.
Turn the ignition switch to LOCK (0).
Disconnect the HandsFreeLink control unit 28P connector (see step 2 under , and AcuraLink control unit (XM receiver) connector A (32P).
Check for continuity between body ground and HandsFreeLink control unit 28P connector terminals No. 6, and No. 7, No. 20, and No. 21 individually.

Fig 1: Checking Continuity Between Body Ground And 28P Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 14.

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

From terminal	To terminals
No. 6 (BLK)	No. 7 (GRN), No. 8 (BRN), No. 20 (RED), No. 21 (WHT)
No. 7 (GRN)	No. 8 (BRN), No. 20 (RED), No. 21 (WHT)
No. 8 (BRN)	No. 20 (RED), No. 21 (WHT)
No. 20 (RED)	No. 21 (WHT)

Fig 2: Identifying Handsfreelink Control Unit 28P Connector

Courtesy of AMERICAN HONDA MOTOR CO., 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 -Go to step 15.

Connect AcuraLink control unit (XM receiver) connector A (32P) terminals No. 22, No. 23, No. 24, and No. 25 to body ground with jumper wires.

Fig 3: Connecting Connector A (32P) To Body Ground With Jumper Wires
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between body ground and HandsFreeLink control unit 28P connector terminals No. 6, No. 7, No. 20, and No. 21 individually.

Fig 4: Checking Continuity Between Body Ground And 28P Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the HandsFreeLink control unit (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION ).

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.