Diagnostic Test: Navi System Link

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Make sure that the correct DVD color and version are installed.
Inspect the DVD for dirt or damage.
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 system and navigation system.
After troubleshooting, enter the anti-theft codes for the audio system and navigation system.
Check the vehicle battery condition first.

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 - Troubleshoot audio system.
Go into the Diagnostic mode, and use the Navi System Link diagnostic (see NAVI SYSTEM LINK ) to check the radio.
Is the Radio icon red?

YES - Troubleshoot the audio system.

NO - Go to step 6.
Turn the ignition switch to LOCK (0).
Disconnect navigation unit connector B (14P) and the stereo amplifier connector A (28P).
Check for continuity between body ground and navigation unit connector B (14P) No. 5 and No. 12 terminals individually.

Fig 1: Identifying Continuity Between Body Ground And Navigation Unit Connector B (14P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair short to body ground in the wire between the navigation unit and stereo amplifier units. Replace the affected shielded harness.

NO - Go to step 9.
Check for continuity between navigation unit connector B (14P) No. 11 terminal and No. 5 and No. 12 terminals individually.

Fig 2: Identifying Continuity Between Navigation Unit Connector B (14P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Repair short to body ground in the wire between the navigation unit and stereo amplifier units. Replace the affected shielded harness.

NO - Go to step 10.
Check for continuity between navigation unit connector B (14P) No. 5 terminal and the stereo amplifier unit connector A (28P) No. 21 terminal.

Fig 3: Identifying Continuity Between Navigation Unit B (14P) And Stereo Amplifier Unit Connector A (28P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 11.

NO - There is an open in the circuit between the navigation unit and stereo amplifier. Check for poor connections or loose terminals at the stereo amplifier and navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.
Check for continuity between navigation unit connector B (14P) No. 12 terminal and the stereo amplifier unit connector A (28P) No. 9 terminal.

Fig 4: Identifying Continuity Between Navigation Unit B (14P) And Stereo Amplifier Unit Connector A (28P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Go to step 12.

NO - There is an open in the circuit between the navigation unit and the stereo amplifier. Check for poor connections or loose terminals at the stereo amplifier and navigation unit. If a poor connection or loose terminal is found, replace the affected shielded harness.
Substitute a known-good stereo amplifier, and recheck.
Is the system OK?

YES - Replace the stereo amplifier.

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