Acura RL. Manual - part 649

Fig. 37: Checking Continuity Between Navigation Unit Connector A (20P) No. 17 Terminal And 
Interface Dial 5P Connector No. 1 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Check for an open in the wire between the navigation unit connector A (20P) No. 19 terminal 
and the interface dial 5P connector No. 2 terminal. If the wire is OK, go to step 10. If the wire is open, 
repair the wire. 

NO - There is an open in the circuit between the interface dial and the navigation unit. Check for poor 
connections or loose terminals at the interface dial and navigation unit. If a poor connection or loose 
terminals is found, replace the affected shielded harness. 

10. Substitute a known-good interface dial (see NAVIGATION DISPLAY UNIT 

REMOVAL/INSTALLATION ), and recheck. 

Is the system OK?  

YES - Replace the original interface dial (see NAVIGATION DISPLAY UNIT 
REMOVAL/INSTALLATION ). 

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

GPS ICON IS WHITE OR NOT SHOWN 

Diagnostic Test: Navi System Link  

1. Check for metallic window tint on the windshield and electronic aftermarket accessories (possibly 

hidden) mounted near the GPS antenna or the navigation unit. 

Is there metallic window tint or electronic accessories?

NOTE:



Check the vehicle battery condition first.  



Make sure the vehicle is parked outside and away from buildings.  



Refer to GPS INFORMATION for realtime satellite reception display. 



With good reception, the icon is normally green.  

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

  

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YES - Remove tint or the accessories and recheck.

NO - Go to step 2. 

2. Go into the Diagnostic mode, and use the "Navi System Link" diagnostic (see NAVI SYSTEM 

LINK ) to check the GPS antenna. 

Is the "GPS Ant" icon red?  

YES - Check for a kinked, crushed, or disconnected GPS antenna wire. If icon is still red, replace the 
GPS antenna. 

NO - Check that nothing is blocking the GPS antenna located under the rear shelf and recheck. 
Substitute a known-good GPS antenna, and recheck. 



If the symptom is gone, replace the GPS antenna.  



If the symptom is still present, substitute a known-good navigation unit and recheck. If the 
symptom is gone, replace the original navigation unit (see NAVIGATION UNIT 
REMOVAL/INSTALLATION ).  

VOICE GUIDANCE CANNOT BE HEARD, IS BROKEN UP, OR THERE IS STATIC 

Diagnostic Test: Navi System Link  

1. Press the display unit SET-UP button.  

2. 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 3. 

3. Check the radio operation. 

Can you hear the radio?  

YES - Go to step 4. 

NOTE:



Check the vehicle battery condition first.  



Always check the connectors for poor connections or loose terminals.  



Before troubleshooting, make sure you have the anti-theft codes for the 
audio system and the navigation system.  



After troubleshooting, enter the anti-theft codes for the audio system 
and the navigation system.  



Make sure the correct colored DVD and DVD version are installed.  



Inspect the DVD for damage.  

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

  

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© 2005 Mitchell Repair Information Company, LLC. 

NO - Troubleshoot the audio system. 

4. 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 5. 

5. Turn the ignition switch OFF.  

6. Disconnect navigation unit connector B (14P) and amplifier unit connector C (23P).  

7. Check for continuity between body ground and navigation unit connector B (14P) No. 5 and No. 12 

terminals individually. 

Fig. 38: Checking Continuity Between Body Ground And Navigation Unit Connector B (14P) 
No. 5 And No. 12 Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

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

NO - Go to step 8. 

8. Check for continuity between navigation unit connector B (14P) No. 11 terminal and No. 5 and No. 

12 terminals individually. 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

  

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Fig. 39: Checking Continuity Between Navigation Unit Connector B (14P) No. 11 Terminal And 
No. 5 And No. 12 Terminals 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

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

NO - Go to step 9. 

9. Check for continuity between navigation unit connector B (14P) No. 5 terminal and the amplifier unit 

connector C (23P) No. 2 terminal. 

Fig. 40: Checking Continuity Between No. 5 Terminal And Amplifier Unit Connector C (23P) 
No. 2 Terminal 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

Is there continuity?  

YES - Go to step 10. 

NO - There is an open in the circuit between the navigation unit and amplifier unit. Check for poor 
connections or loose terminals at the amplifier and navigation units. If a poor connection or loose 
terminal is found, replace the affected shielded harness. 

10. Check for continuity between navigation unit connector B (14P) No. 12 terminal and amplifier unit 

 

2007 Acura RL 

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

  

me 

 

Friday, June 05, 2009 3:28:15 PM

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© 2005 Mitchell Repair Information Company, LLC.