If the leak source is not obvious the generalized test method using water test stands should be used. Once the general leak area is located one of the localized test procedures can be used to pin point the leak. Refer to Localized Testing (Spot Testing) , Water Hose Test or Air Hose Test .

1. Submit the vehicle to a water spray of 155 kPa (22 psi) for 10 to 20 minutes.
2. When testing the windshield seal, tape off the weatherstrip, sealing the front of the roof lift off panel or convertible top, and set the stands so the nozzles point approximately 30 degrees down and 45 degrees toward the rear of the vehicle.
3. When testing the windshield header and front body pillar weatherstrips set the stands so the nozzles point approximately 30 degrees down and 45 degrees toward the rear of the vehicle.
4. When testing the side of the vehicle set the stands so the nozzles point approximately 30 degrees down and 45 degrees toward the rear of the vehicle.
5. When testing the rear window and rear compartment lid set the stands 600 mm (24 in) from the corner of the rear window with the nozzles pointing approximately 30 degrees down and 30 degrees toward the front of the vehicle.