7: Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Mazda Tribute, 2003 Mazda Tribute, and 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.

Qualifying the concern by the particular sensation present can help narrow down the concern. Always use the "symptom" to "system" to "component" to "cause" diagnosis technique. This diagnostic method divides the problem into related areas to correct the customer concern.

Verify the "symptom".
Determine which "system(s)" can cause the "symptom".
- If a vibration concern is vehicle speed related, the tire and wheel RPM/frequency or driveshaft frequency should be calculated.
- If a vibration concern is engine speed related, the engine, engine accessory or engine firing frequencies should be calculated.
After determining the "system", use the WDS or equivalent Tester to identify the worn or damaged "components".
After identifying the "components", try to find the "cause" of the failure.

Once the concern is narrowed down to a symptom/condition, proceed to NVH CONDITION & SYMPTOM CATEGORIES .