Every thing you need to know about Moonroof maintenance.......
Rattles
Possible Source(s):
Glass panel not properly aligned or fitted to roof.
Action(s) to Take:
Align glass panel to specification. Bend glass attaching tabs inboard 1.5mm (0.059 inch).
Possible Source(s):
Glass panel not fully closing.
Action(s) to Take:
Adjust to specification.
Possible Source(s):
Drain tubes not properly connected and/or blocked.
Action(s) to Take:
Connect properly and/or fix to replace drain tubes as required.
Possible Source(s):
Glass assembly seals not properly in place and/or not attached securely.
Action(s) to Take:
Install seals properly and/or attach correctly.
Possible Source(s):
Obstructions or foreign objects in tracks or troughs.
Action(s) to Take:
Remove obstructions or foreign objects as required.
Possible Source(s):
Rear guide pin not properly engaged in cam slot of lifter assembly.
Action(s) to Take:
Engage rear guide pin properly. Add retaining clip as required.
Possible Source(s):
Rear lifter assemblies not properly connected to glass module.
Action(s) to Take:
Properly connect lifter assemblies to glass module.
Possible Source(s):
Front guides not properly installed and/or secured.
Action(s) to Take:
Install and/or secure front guides.
Possible Source(s):
Tracks not attached to housing securely.
Action(s) to Take:
Attach tracks securely to housing.
Possible Source(s):
Sunshade not installed properly.
Action(s) to Take:
Check and install sunshade properly as required.
Glass Height
The correct position of the glass to the roof is as follows:
Front Corners: Flush to 1mm below roof.
Rear Corners: Flush to 1mm above roof.
1. Cycle glass from full open to full closed position.
2. Remove three halo retaining screws along front of the opening inside of vehicle and slide halo and sunshade fully rearward to expose six glass retaining screws (three each side).
3. Loosen six glass retaining screws. Then, tighten them so that they are snug but not tightened to specification.
4. To adjust only the front of glass, loosen the center and front screws. If it is desired to adjust only the back of the glass, only loosen the center and rear screws.
5. To check height setting, open the glass about four inches, then return to the closed position.
6. Tighten the glass retaining screws to 2-4 N-m (18-35 lb-in).
7. Slide halo forward and replace three retaining screws.
8. Close sunshade if desired.
Glass--Fore-and-Aft
Fore-and-aft adjustment of the glass panel can be accomplished by first estimating the amount of fore or aft adjustment necessary for proper glass panel fit, then:
1. Run glass panel fully rearward. Use emergency crank if necessary.
2. Loosen five screws on pivot brackets, noting position of ramp stop.
3. Move ramp stops equally fore or aft the estimated distance necessary for proper glass panel fit.
4. Install six pivot bracket screws and cycle moon roof, checking for proper fit. Repeat procedure until desired fit is obtained.
Water Drainage System and Water Leak Corrections
Drain Hoses
The roof panel module contains the track assemblies, cable and drive mechanisms, and a drain trough that encircles the sliding panel. Attached to the module are four drain hoses. One drain hose is attached at each corner of the module. The two front drain hoses are routed down the windshield pillars and into the cowl sides exiting at rocker panel drain holes; ends of hose are not reusable. The two rear drain hoses are routed down the rear pillars, forward of the rear wheelbase, exiting at rocker panel drain holes on station wagons.
On sedan vehicles, the rear hoses are routed aft of wheelhouse and through the quarter panel behind the bumper facia. A rubber valve is used at the end of the tube to prevent noise from entering the passenger compartment.
NOTE:
Prior to performing any services, first verify that the drainage system is not plugged or restricted.
Use a 473ml (16 oz) container and pour water into the drain trough. Look at the rear of the vehicle to ensure that the water drains from the rocker panels forward of the rear wheelhouse for station wagons, and aft of wheelhouse on sedans.
If the water flow is restricted, use compressed air to blow out any material in the drain hose system. Test by pouring water slowly into the system again.
After ensuring that the drainage system is not restricted, verify that gaps do not exist between the glass seal and the roof panel. If a gap exists, the gap must be brought to specification before any further action is taken. Adjust sliding panel as outlined.
With clearances within specification and panel closed, have an assistant spray water on the sliding panel while you are on the inside, visually inspecting the area to see if an excessive amount of water is entering the drain trough. A large volume of water indicates that an excessive clearance exists between the sliding panel seal and the roof.
Sliding Panel
The sliding panel has controlled water leak at the seals. A properly adjusted glass panel should result in snug fit between the seal and the roof skin around the entire opening. The fit can be checked by using a feeler gauge set at 0.25mm (0.01 inch) between the seal and roof. If these specifications are not maintained, water will overflow the drain troughs and enter the module, running down into the passenger compartment when the vehicle is stopped abruptly. Also, increased wind noise could result if glass clearances are not kept to these specifications.
Wet Headlining--Sides
If water drips from the headlining above the door or quarter window, check to see if the drain tube(s) are disconnected from the module. Apply Weatherstrip Adhesive E8AZ-19552-A (ESB-M2G14-A) or equivalent, on drain tube ****** and insert drain hose.
Overcrowned Rear Roof Panel
If the roof panel is overcrowned to the contour of the sliding panel (at rear of sliding panel), this can cause wind noise or water leak conditions.
CAUTION:
Excessive overbending could distort the roof panel, requiring costly metal finishing service. This procedure should be used only as a last resort.
Remove sliding panel from vehicle and carefully overbend the center of the roof panel by applying downward pressure.
Undercrowned Rear Roof Panel
A glass panel scratch can be caused by the rear of the roof panel being slightly undercrowned.
CAUTION:
Excessive overbending could distort the roof panel, requiring costly metal finishing service. This procedure should be used only as a last resort.
Open the sliding panel assembly slightly and compare the contour of roof panel and glass panel. If the roof panel appears flattened in the center, and the glass scuffs on the underside of the roof panel, remove the sliding panel from the vehicle and arch the roof panel by pushing up on underside of roof panel to increase the roof panel arch.
Motor Synchronization (Timing)
If the moon roof motor is removed from the vehicle, it must always be checked for synchronization before it is installed. The motor is synchronized when the centerline of the gear, the centerline of the cam, and the hole in the cam are aligned. If the motor is not synchronized, remove the motor as outlined and adjust it as follows:
NOTE:
The glass panel should be in the CLOSED position for synchronization.
1. Connect motor wiring connector to moon roof wiring connector.
2. Operate control switch to advance motor drive gear until the centerline of the gear, the centerline of the cam and the hole in the cam are aligned as shown.
3. Disconnect motor wiring connector from moon roof wiring connector.
NOTE:
It may be necessary to rotate motor assembly slightly to engage drive splines when installing.
4. Ensure that the lifter arms and guidance ramps are aligned as shown. Connect the motor and install to roof panel.
