Honda 2007 Acura RL User Manual page 46

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL
Check on-line for service bulletins or other service information for the

navigation system.
Always check the connectors for poor connections or loose terminals.

Before troubleshooting, make sure you have the anti-theft code for the

audio system and the navigation system.
Enter the anti-theft codes for the audio system and the navigation

system.
1. Check the No. 5 (7.5A), No. 7 (10A) fuse and No. 32 (10A) fuse in the driver's under-dash fuse relay
box, and reinstall the fuses if they are OK.
Are the fuses OK?
YES - Go to step 2.
NO - Replace the fuse and recheck.
2. Turn the ignition switch to ACC (I).
3. Operate the radio and listen to the audio.
Can you hear the audio?
YES - Go to step 4.
NO - Check the ACC circuit.
4. Turn the ignition switch to ON (II).
5. Measure the voltage between body ground and navigation unit connector C (8P) No. 1 and No. 2
terminals individually.
Fig. 28: Measuring Voltage Between Body Ground And Navigation Unit Connector C (8P) No.
1, 2 Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES - Go to step 6.
NO - If the +B wire does not have voltage, repair open in the wire between the driver's under-dash
2007 Acura RL