SAAB WIS ONLINE

Symptoms - Transfer Case

Symptoms - Transfer Case

Strategy Based Diagnostics

Review the system operation in order to familiarize yourself with the system functions. Refer to Transfer Case Disassembled View , Transfer Case Description and Operation , and Rear Drive Axle Description and Operation . 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. For a detailed explanation, refer to Strategy Based Diagnosis .

Visual/Physical Inspection


• Inspect for aftermarket devices, which could affect the operation of the vehicle. Refer to Checking Aftermarket Accessories .

• Inspect for easily accessible or visible system components for obvious damage or conditions which may cause the symptom.

• Inspect 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 that is the case, to a known good vehicle and ensure you are not trying to correct a normal condition.


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 System Check - Vehicle

• Noisy in Drive

• Noisy When Coasting

• Intermittent Noise

• Constant Noise

• Transfer Case Leak Diagnosis