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Home >> Ford >> 2022 >> Expedition SSV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Four-Wheel Drive Systems) >> Diagnosis And Testing >> DTC Chart and Pinpoint Tests - Vehicles With: 1-Speed Torque On Demand Transfer Case >> Symptom Chart -- NVH

Symptom Chart -- NVH

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NVH symptoms should be identified using the diagnostic tools that are available. For a list of these tools, an explanation of their uses and a glossary of common terms, REFER to: Noise, Vibration and Harshness (NVH) Since it is possible any one of multiple systems may be the cause of a symptom, it may be necessary to use a process of elimination type of diagnostic approach to pinpoint the responsible system.

Condition Actions
The transfer case makes noise GO to Pinpoint Test I 
Transfer case whine - noise at all ranges GO to Pinpoint Test J 
Transfer case growl/rumble - noise at all ranges GO to Pinpoint Test K 
Transfer case scraping/grating - noise at all ranges GO to Pinpoint Test L