Diagnostic Test: Self-Diagnosis Mode

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 ).
Make sure that the latest navigation software is installed.
Check the navigation volume level (see Owner's Manual).
Check the connectors for poor connections or loose terminals.
Before troubleshooting, make sure you have anti-theft codes for the audio-navigation unit.
After troubleshooting, enter the anti-theft codes for the audio-navigation unit.
Check for and resolve all CAN DTCs before troubleshooting the navigation system.

Turn the ignition switch to ON (II).
Press the display unit SET-UP button.
Check the volume and voice feedback setting for the navigation system in set-up.
Is either set to OFF?

YES -Set the voice feedback to ON, and select an audible level for the volume.

NO -Go to step 4.
Check the radio operation.
Can you hear the radio?

YES -Go to step 5.

NO -Do the audio system troubleshooting.
Check for the hard error code (see HOW TO CHECK ERROR HISTORY (NAVIGATION DTCS) ).
Are there any Hard Error codes stored?

YES -Do the audio system troubleshooting.

NO -Go to step 6.
Turn the ignition switch to LOCK (0).
Disconnect audio-navigation unit connector F (20P) and the stereo amplifier connector A (28P).
Check for continuity between body ground and audio-navigation unit connector F (20P) terminals No. 17 and No. 19 individually.

Fig 1: Checking Continuity Between Body Ground And Connector F (20P) 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 audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.

NO -Go to step 9.

Check for continuity between the terminals of audio-navigation unit connector F (20P) according to the table.

From terminal	To terminals
F17 (LT BLU)	F19 (PUR), F20 (BRN)
F19 (PUR)	F20 (BRN)

Fig 2: Identifying Audio-Navigation Unit Connector F (20P)

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 audio-navigation unit and the stereo amplifier. Replace the affected shielded harness.

NO -Go to step 10.

Check for continuity between audio-navigation unit connector F (20P) terminal No. 19 and stereo amplifier connector A (28P) terminal No. 21.

Fig 3: Checking Continuity Between Connector F (20P) And Connector A (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 11.

NO -There is an open in the wire between the audio-navigation unit and the stereo amplifier. Check for poor connections or loose terminals at the stereo amplifier and audio-navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.
Check for continuity between audio-navigation unit connector F (20P) terminal No. 17 and stereo amplifier connector A (28P) terminal No. 9.

Fig 4: Checking Continuity Between Connector F (20P) And Connector A (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 12.

NO -There is an open in the wire between the audio-navigation unit and the stereo amplifier. Check for poor connections or loose terminals at the stereo amplifier and audio-navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.
Substitute a known-good stereo amplifier (see SUBWOOFER (WITHOUT NAVIGATION) ), and recheck.
Is the system OK?

YES -Replace the original stereo amplifier (see SUBWOOFER (WITHOUT NAVIGATION) ).

NO -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).