Acura RL. Manual - part 657



When the connection is NG, first check for loose terminals at the navigation unit and the display unit
connections. Next check for an open or short in the communication line between the navigation unit
and the display unit. If you find the line to have an open or short, replace the affected shielded
harness.



If the ROM or RAM is NG, replace the display unit.



The version represents the software version in the display.

Fig. 62: Screen Display - Display
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Radio

This diagnostic checks the audio connections. If not OK, do the troubleshooting for the audio system.

Fig. 63: Screen Display - Radio
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Navi ECU

This screen looks for problems with the navigation unit. When you initiate this diagnostic, the navigation
unit may delay up to a minute while the diagnostic runs.



If "V-RAM" or "D-RAM" is NG, then replace the navigation unit.



If "GPS" indicates "NG (ANT)," then check the entire GPS antenna wire from the navigation unit to
the antenna. If the wire is crushed or damaged, try a known good antenna. If this diagnostic reads OK,
then order a new GPS antenna. If the diagnostic still reads NG (ANT), then replace the navigation
unit.



"DVD ROM" represents the database version on the DVD. You can find this information either in the
Setup Screen "Version," or in the Diagnostic Screen "Version."

NOTE:

Do not try to end this diagnostic by pressing "OK" or "Mem clear" before it
finishes, otherwise the system may reboot.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 87



"Serial No." should be the same as the serial number found on the underside of the navigation unit.
You need this number to obtain the security code from the Interactive Network (iN) system.



The Mem Clr is for factory use and should not be used unless instructed by the factory.

Selecting this will erase the client's settings, personal information, GPS orbital data, and anything else
stored in memory.

Fig. 64: Screen Display - Navi ECU
Courtesy of AMERICAN HONDA MOTOR CO., INC.

PC Card info.

There is no PC Card in the PC slot, and the screen should say, "PC Card is not inserted."

Fig. 65: Screen Display - PC Card Info
Courtesy of AMERICAN HONDA MOTOR CO., INC.

If the factory provides a PC card and instructs you to insert a card, then the screen displays the
Manufacturer, and Product Name as shown in the following screen.

Fig. 66: Screen Display - PC Card Info
Courtesy of AMERICAN HONDA MOTOR CO., INC.

NOTE:

Do not insert any card or object into the slot.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 88

Hard Key

This diagnostic tests the interface dial, and the buttons that surround it. For this model, the interface dial and
buttons do not use the GA-Net bus for communications.

To complete the test, touch each button on the vehicle's control panel, and move the interface dial to each
indicated position. As you test each function, the corresponding button on the display should highlight. To
exit, push in and hold the selector knob.

Fig. 67: Screen Display - Hard Key
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Aircon Diag

Indicates received data from the climate control unit after running the climate control self-diagnostic
function (see HOW TO USE THE SELF-DIAGNOSTIC FUNCTION WITHOUT HDS ).

Fig. 68: Screen Display - Aircon Diag
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Smart Card

If the smart card is being used, you can check the card condition.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

Page 89

Fig. 69: Screen Display - Smart Card
Courtesy of AMERICAN HONDA MOTOR CO., INC.

CAR STATUS

Use this screen to confirm that the navigation unit is properly receiving input signals. Signals equal to (0)
are OFF, and signals equal to (Dare ON. If the value on the display does not match the actual vehicle status,
then check the wire carrying the signal.



VSP-Vehicle Speed Pulse from PCM (Pin 6 of C-connector)

a. OFF (0) when vehicle is not moving

b. ON (1) when vehicle is moving

The VSP comes from the PCM as a dedicated signal. Internally, the navigation unit compares the actual VP
on the map against street data to adjust the pulse to speed scaling factor. As this scaling factor becomes
more accurate, the "Level" gradually increases from 0 to 10 (see the TIRE CALIBRATE diagnostic
screen).



BACK-Reverse indication from taillight relay (Pin 5 of C-connector)

a. OFF (0) when the shift lever is in any position other than reverse

b. ON (1) when the shift lever is in reverse

The Back signal is used by the navigation unit to allow the map screen to show the VP moving backwards
when in reverse. This signal is needed because the Speed Pulse has no direction indication.

Fig. 70: Screen Display - Car Status
Courtesy of AMERICAN HONDA MOTOR CO., INC.

ILL CANCEL

This item detects whether the "illumination cancel" function is in use.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

Friday, June 05, 2009 3:28:15 PM

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