Sunroof Drain Inspection and Cleaning
|
Sunroof Drain Inspection and Cleaning
|
Note
|
If the headliner is wet DO NOT remove any interior trim. Do the Plugged Drain Hose test first.
|
A drain trough encircles the sunroof window panel and water is drained off by the drain hoses located at each corner of the housing. A drain channel spans across the sunroof housing at the rear of the window panel and directs water into the trough.
1.
|
The front drain hoses are routed down the windshield pillars and out through the front of the pillar in the wheelhouse area. The front hoses are installed in a rubber grommet and retained by clips.
|
2.
|
The rear drainage hoses are led through the rear pillars and out via the body's outer side plate extension. The rear hoses are installed in a rubber grommet and retained by clips.
|
On some cars it may be necessary to clean the drainage hose by blowing compressed air through the hose's bottom opening instead of the top opening.
If a waterleak has occurred check for a plugged drain hose at each corner of drainage system.
1.
|
Locate the outlet point for each drainage hose.
|
2.
|
Check visually that all hoses are attached to each outlet point.
|
3.
|
Cover the interior before the compressed air is blown into the hose.
|
4.
|
To test for blockage, pour a small container of water into the housing drain trough. Check each corner to confirm the drain hose is draining water.
Warning
|
Wear safety glasses in order to avoid eye damage.
|
|
|
|
|
|
5.
|
Use compressed air, 241 kPa (35 psi) or less to blow out any drain hose that is plugged.
|
6.
|
Test the system again.
|
7.
|
If the hose is still clogged, remove the blockage with the following steps:
|
|
7.1.
|
Push mechanics wire through the hose to remove the obstruction.
|
|
7.2.
|
Use compressed air in order to blow out any remaining material.
|
Inspect the drainage system for disconnected drain hoses. Complete the following steps in order to obtain partial access to drain hoses and check for a disconnected hose.
1.
|
Open the sunroof window panel.
|
3.
|
Connect any disconnected hoses. If tie straps are required, connect the hose and apply tie strap.
|
4.
|
Ensure that the rear drain hoses are properly routed in the metal roof slot and taped in place.
|