DTC 2704: XM (HIP) Diag

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 COMM BUS (open or short) or in the AcuraLink control unit (XM receiver).
Check any official Honda service website for more service information about the navigation system.
Check for and resolve and CAN DTCs before troubleshooting DTC 2704.
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 ).
Check the System Links.
Is the XM (HIP) icon red?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time.
Select the XM (HIP), then check the XM (HIP) System Link.
Is the Navi icon red?

YES -Go to step 13.

NO -Go to step 6.
Check the XM (HIP) System Link.
Is the HFL icon red?

YES -Do the DTC 2705 troubleshooting (see DTC 2705: HFL DIAG ).

NO -Go to step 7.
Check the XM (HIP) System Link.
Is the Audio icon red?

YES -Go to step 8.

NO -Check the B-CAN DTCs. If any DTC is indicated, refer to the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ), and do the AcuraLink troubleshooting.
Disconnect AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector D(14P).
Check for continuity between body ground and AcuraLink control unit (XM receiver) connector A (32P) terminals No. 30 and No. 31 individually.

Fig 1: Checking Continuity Between Body Ground And Connector A (32P)
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 audio-navigation unit. Replace the affected shielded harness.

NO -Go to step 10.

Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector A (32P) according to the table.

From terminal	To terminals
A29(BRN)	A30 (GRN), A31 (RED)
A30 (GRN)	A31 (RED)

Fig 2: Identifying Acuralink Control Unit Connector A (32P)

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 AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.

NO -Go to step 11.

Connect AcuraLink control unit (XM receiver) connector A (32P) terminals No. 30 and No. 31 with a jumper wire.

Fig 3: Connecting Connector A (32P) Terminals No. 30 And No. 31 With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between audio-navigation unit connector D (14P) terminals No. 9 and No. 10.

Fig 4: Checking Continuity Between Connector D (14P) Terminals No. 9 And No. 10
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).

NO -There is an open in the wire(s) between the AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.
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 AcuraLink DTCs indicated?

YES -Do the AcuraLink DTCs troubleshooting.

NO -Go to step 17.
Do the B-CAN test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ), and check the communication with the AcuraLink control unit.
Does the AcuraLink control unit communicate with the HDS?

YES -Go to step 18.

NO -Go to AcuraLink control unit troubleshooting.
Turn the ignition switch to LOCK (0).
Disconnect AcuraLink control unit (XM receiver) connector A (32P) and audio-navigation unit connector C (28P).
Check for continuity between body ground and AcuraLink control unit (XM receiver) connector A (32P) terminals No. 17, No. 18, No. 19, and No. 20 individually.

Fig 5: Checking Continuity Between Body Ground And Connector A (32P)
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 audio-navigation unit. Replace the affected shielded harness.

NO -Go to step 21.

Check for continuity between the terminals of AcuraLink control unit (XM receiver) connector A (32P) according to the table.

From terminal	To terminals
A17 (WHT)	A18 (RED), A19 (GRN), A20 (BLK), A21 (GRY)
A18 (RED)	A19 (GRN), A20 (BLK), A21 (GRY)
A19 (GRN)	A20 (BLK), A21 (GRY)
A20 (BLK)	A21 (GRY)

Fig 6: Identifying Acuralink Control Unit Connector A (32P)

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 AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.

NO -Go to step 22.

Connect AcuraLink control unit (XM receiver) connector A (32P) terminals No. 17, No. 18, No. 19, and No. 20 to body ground with jumper wires.

Fig 7: Connecting Connector A (32P) Terminals To Body Ground With Jumper Wires
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between body ground and audio-navigation unit connector C (28P) terminals No. 9, No. 10, No. 22, and No. 23 individually.

Fig 8: Checking Continuity Between Body Ground And Connector C (28P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the AcuraLink control unit (XM receiver). (see ACURALINK CONTROL UNIT (XM RECEIVER) REMOVAL/INSTALLATION )

NO -There is an open in the wire(s) between the AcuraLink control unit (XM receiver) and the audio-navigation unit. Replace the affected shielded harness.