Symptom Related Diagnostic Procedures
WINDOW GLASS DIAGNOSISINTRODUCTION TO WINDOW GLASS DIAGNOSIS
If water leaks from the quarter window glass, causes for these faults can include faults in the glass, weatherstrip or drain hole.
WINDOW GLASS DIAGNOSTIC TROUBLESHOOTING STRATEGY
Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find a window glass fault.
1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Find the malfunction by following the Symptom Chart.
4. Verify malfunction is eliminated.
SYMPTOM CHART
Symptom Chart:
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Quarter Window Glass Water Leak
DIAGNOSIS
STEP 1. Check if the seal is faulty.
Q: Is the seal faulty?
YES : Repair it, then go to Step 3.
NO : Go to Step 2.
STEP 2. Check if the body flange is deformed.
Q: Is the body flange deformed?
YES : Repair or replace it, then go to Step 3.
NO : Go to Step 3.
STEP 3. Check symptoms.
Q: Is any water leaking?
YES : Return to Step 1.
NO : This diagnosis complete.
INSPECTION PROCEDURE 2: Quarter Window Malfunction
DIAGNOSIS
STEP 1. Check the quarter window installation condition.
Q: Is the quarter window installation condition good?
YES : Go to Step 2.
NO : Adjust it. Then go to Step 3.
STEP 2. Inspect the window regulator assembly.
Q: Is the window regulator assembly in good condition?
YES : Go to Step 3.
NO : Repair or replace it, then go to Step 3.
STEP 3. Check symptoms.
Q: Does the quarter window operate correctly?
YES : This diagnosis is complete.
NO : Return to Step 1.
INSPECTION PROCEDURE 3: Water Leak around Quarter Window Glass Edge
DIAGNOSIS
STEP 1. Check the weatherstrip.
Q: Is the weatherstrip in good condition?
YES : Go to Step 2.
NO : Replace it, then go to Step 3.
STEP 2. Check quarter window glass fit (alignment).
Q: Is the quarter window glass fit (alignment) correct?
YES : Go to Step 3.
NO : Adjust it. Then go to Step 3.
STEP 3. Check symptoms.
Q: Is any water leaking?
YES : Return to Step 1.
NO : This diagnosis is complete.
INSPECTION PROCEDURE 4: Water Leak from Quarter Trim
DIAGNOSIS
STEP 1. Check the drain hole.
Q: Is the drain hole clogged?
YES : Replace it, then go to Step 3.
NO : Go to Step 2.
STEP 2. Check the waterproof cover.
Q: Is the waterproof cover in good condition?
YES : Go to Step 3.
NO : Repair or replace it, then go to Step 3.
STEP 3. Check symptoms.
Q: Is any water leaking?
YES : Return to Step 1.
NO : This diagnosis is complete.
INSPECTION PROCEDURE 5: Wind Noise around Quarter Window
DIAGNOSIS
STEP 1. Check the weatherstrip for holding condition.
Q: Is the weatherstrip holding firmly?
YES : Go to Step 2.
NO : Adjust fit of quarter window glass. Then go to Step 4.
STEP 2. Check the clearance.
Q: Is the clearance between the quarter window glass and the rear rail weatherstrip holder proper?
YES : Go to Step 3.
NO : Adjust it. Then go to Step 4.
STEP 3. Check the quarter window regulator assembly.
Q: Is the quarter window regulator deformed?
YES : Repair or replace it. then go to Step 4.
NO : Go to Step 4.
STEP 4. Check symptoms.
Q: Has the wind noise been improved?
YES : Return to Step 1.
NO : This diagnosis complete.