Water Leak Test

WATER LEAK TEST

Follow these steps to determine where the roof is leaking, then go on to Leak Locations and Repairs, record your test results, and choose the correct repair.

Service Advisor

^ Have the customer show you where the water is coming in, and note the location(s) on a copy of the leak location sheet (YO390) provided with this bulletin.

^ Ask the customer if the leak occurs when the car is

[ ] being driven?
[ ] being washed?
[ ] sitting in the rain?
[ ] sitting level?
[ ] sitting on an incline?

^ Tell the customer that improper roof installation can cause leaks. Show them how to install the roof so the ends of the side seals fit properly against the "A" pillar and "B" pillar seals.

Technician

^ Hook up a 5/8 inch diameter garden hose to a faucet, turn the water on, and adjust the flow rate to about 5 gallons in 30 seconds. Mark the position of the faucet handle at that rate, and then turn the faucet off. Do not use any type of pressure or sprayer attachment.

^ Have an observer sit in the car and watch for water on the sun visor, A" pillar, door panel, and inside of the glass, and mark on the location sheet where it's coming in.

^ Turn the faucet on (up to the mark you made), and hold the hose so water flows freely over the roof.

^ Continue testing by holding the free-flowing hose at various rear locations.

NOTE
Water flowing down between the rear edge of the glass and the inner lip of the "B" pillar seal is normal. The water should flow out the bottom of the seal without entering the passenger compartment. This is also true of the roof side seal between the edge of the glass and the top of the gutter.

^ Repeat leak tests 1 thru 11 on the other side of the car. Refer to this illustration for correct part names.