Honda 2007 Acura RL User Manual page 75

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL
YES - Replace the original AcuraLink control unit. Refer to ACURALINK article. Register the new
AcuraLink control unit with XM radio and Acura Client Services. Return the vehicle to the client.
NO - Substitute a known-good navigation control unit. If the problem goes away, replace the original
navigation control unit.
TRIP COMPUTER-NO DISTANCE
Diagnostic Test: Car Status
NOTE:
Check the vehicle battery condition first.

Always check for and resolve all CAN DTCs before troubleshooting the

navigation system.
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.
Verify that the correct navigation unit is installed for this model. Go into

the Diagnostic mode and use "Version" (see VERSION ).
Always make sure that the correct DVD color and version are installed.

Check on-line for service bulletins or other service information for the

navigation system.
1. Go into the diagnostic mode and use "Car Status" diagnostic (see CAR STATUS ) to check for a
vehicle speed pulse (VSP).
Is there a VSP when the vehicle is moving?
YES - Check the CAN bus wires for an open or short to ground between navigation unit connector A
(20P) No. 8 and No. 18 terminals and PCM connector E (31P) No. 15 and No. 26 terminals. If OK,
replace the navigation unit.
NO - Check the VSP wire for an open or short to ground between navigation unit connector C (8P)
terminal No. 6 and PCM connector E (31P) No. 11 terminal.
TRIP COMPUTER-NO FUEL INFORMATION
Diagnostic Test: Navi System Link
NOTE:
Check the vehicle battery condition first.

Always check for and resolve all CAN DTCs before troubleshooting the

navigation system.
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.
2007 Acura RL