Symptom Related Diagnostic Procedures

Symptoms - Transfer Case
Strategy Based Diagnostics
Review the system operations in order to familiarize yourself with the system functions. All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start when repairs are necessary.

Visual/Physical Inspection
^ Inspect for aftermarket devices, which could affect the operation of the vehicle.
^ Inspect the easily accessible or visible system components for obvious damage or conditions, which could cause the symptom.
^ Check for the correct lubricant levels and the proper viscosities.
^ Verify the exact operating conditions under which the concern exists. Note factors such as vehicle speed, road conditions, ambient temperature, and other specifics.
^ Compare the driving characteristics or sounds, if applicable, to a known good vehicle and make sure you are not trying to correct a normal condition.
^ Inspect for all-wheel drive activation and operation.

Intermittent
Test the vehicle under the same conditions that the customer reported in order to verify the system is operating properly.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Diagnostic Starting Point - Vibration Diagnosis and Correction
^ Diagnostic Starting Point - Transfer Case
^ Diagnostic Starting Point - Rear Differential Carrier
^ All- Wheel Drive (AWD) System Functional Inspection
^ Diagnostic Starting Point - Wheel Drive Shafts
^ Noisy in Drive Noisy In Drive
^ Noisy When Coasting Noisy When Coasting
^ Intermittent Noise Intermittent Noise
^ Constant Noise Constant Noise
^ Transfer Case Leak Diagnosis Transfer Case Leak Diagnosis