Acura RL. Manual - part 635



Before reinstalling the motor, slide both drain channel sliders (C) rearward fully until the slider
portions of the inner cable contact the slide stops (D) on the guide rail to slide both drain
channel sliders.

Fig. 29: Identifying Drain Channel Sliders And Slide Stops
Courtesy of AMERICAN HONDA MOTOR CO., INC.



Before reinstalling the motor, install the frame and glass, then check the opening drag (see
CLOSING FORCE AND OPENING DRAG CHECK ).



After reinstalling the motor, do the moonroof calibration (see RESETTING THE
MOONROOF CONTROL UNIT ).

CLOSING FORCE AND OPENING DRAG CHECK

1. Remove the headliner (see HEADLINER REMOVAL/INSTALLATION ).

2. Closing force check:



With a shop towel (A) on the leading edge of the glass (B), attach a spring scale (C) as shown.



Have an assistant hold the switch to close the glass while you measure the force required to stop
it.



Read the force as soon as the glass stops moving, then immediately release the switch and
spring scale.

Closing force: 200-290 N (20-30 kgf, 44-66 lbf)

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Moonroof (Body) - RL

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Fig. 30: Checking Moonroof Closing Force
Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. If the force in not within specification, remove the moonroof motor (see MOTOR

REPLACEMENT ), then check:



The gear teeth and the inner cable for breakage and damage. If the gear teeth are broken,
replace the motor. If the inner cable is damaged, remove the frame (see FRAME AND DRAIN
TUBE REPLACEMENT ), and replace the cable (see DRAIN CHANNEL SLIDER AND
CABLE ASSEMBLY REPLACEMENT ).



The moonroof motor (see MOONROOF CONTROL UNIT INPUT TEST ). If the motor
fails to run or doesn't turn smoothly, replace it.



The opening drag. Go to step 4.

4. Opening drag check: Protect the leading edge of the glass with a shop towel (A). Measure the effort

required to open the glass using a spring scale (B) as shown.

Fig. 31: Checking Moonroof Opening Drag
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. If the load is over 40 N (4 kgf, 9 lbf), check:



The side clearance and glass position adjustment (see GLASS POSITION ADJUSTMENT ).



For broken or damaged sliding parts. If any sliding parts are damaged, replace them.

6. Do the moonroof calibration (see RESETTING THE MOONROOF CONTROL UNIT ) after

reinstalling the moonroof motor.

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Moonroof (Body) - RL

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2005-08 ACCESSORIES AND EQUIPMENT

Navigation System - RL

COMPONENT LOCATION INDEX

Fig. 1: Identifying Location Of Navigation System Components
Courtesy of AMERICAN HONDA MOTOR CO., INC.

GENERAL TROUBLESHOOTING INFORMATION

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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GENERAL OPERATION

Refer to the Navigation System Manual for the navigation system operating procedures.

ANTI-THEFT FEATURE

The navigation system and audio unit have a coded theft protection circuit. Make sure you have the anti-
theft security codes before:



Disconnecting the battery.



Disconnecting the navigation unit 8P connector.



Removing the No. 7 (10A) fuse from the driver's under-dash fuse/relay box.

After service, reconnect power to the navigation unit, and turn the ignition switch ON (II). Enter the 4-digit
anti-theft security code, then select Done.

If the code cannot be found, use the Interactive Network (iN) to look it up. You can view the serial number
in the Navi ECU diagnostic screen (see UNIT CHECK ). Also, you can find the serial number on the
navigation unit that is stored in the trunk. The serial number is on a label on the bottom of the unit.

When replacing the navigation unit, be sure to give the client the new anti-theft security code.

SYMPTOM DIAGNOSIS

Certain circumstances and system limitations will result in occasional vehicle positioning errors. Some
clients may think this indicates a problem with the navigation system when, in fact, the system is normal.
Keep the following items in mind when interviewing clients about symptoms with the navigation system.

SELF-INERTIAL NAVIGATION LIMITATIONS

The limitations of the self-inertial portion of the navigation system (the yaw rate sensor and the vehicle
speed signal) can cause some discrepancies between the vehicle's actual position and the indicated vehicle
position (GPS vehicle position).

The following circumstances may cause vehicle positioning errors:



Moving the vehicle with the engine stopped and the vehicle stopped, such as by ferry or tow truck, or
if the vehicle is spun on a turn table.



Continuous tire slippage on a slippery surface



Driving with snow chains mounted



Abnormal tire pressure



Incorrect tire size



Frequent lane changes across a wide highway



Continuous driving on a straight or gently curving highway



Very bumpy roads



Tolerances in the system and map inaccuracies sometimes limit how precisely the vehicle position is
indicated. Examples of this include:

2007 Acura RL

2005-08 ACCESSORIES AND EQUIPMENT Navigation System - RL

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