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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1085 (Four-Wheel Drive Systems) >> Diagnosis And Testing >> Four-Wheel Drive Systems - Vehicles With: 1-Speed Torque On Demand Transfer Case >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage.

    Visual Inspection Chart 

    Mechanical Electrical
    Halfshafts
    IWEs
    Driveshaft and U-joints
    Vacuum leaks
    Fluid leaks
    Matching tire sizes
    Transfer case    		 BJB fuse 13 (10A)fuse 29 (10A) (IWE) solenoidfuse 54 (40A) (ELSD and DCMR)fuse 63 (15A)fuse 71 (15A)
    BCM fuse 32 (10A) (ATCM-FFSM)
    Wiring, terminals or connectors
    4X4 switch module (ATCM)
    Drive mode select switch
    Transfer case clutch field coil
    IWE solenoid
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. If the cause is not visually evident, connect the scan tool to the DLC.
  5. If the TCCM or ATCM does not pass the network test, REFER to: Communications Network . .
  6. Download the Self Test and Datalogger tools.
  7. Retrieve and record CMDTCs for all modules.
  8. Clear the CMDTCs from the ATCM and TCCM.
  9. Perform the KOEO self test on the ATCM and TCCM.
  10. If no DTCs related to the concern are retrieved, GO to Symptom Chart: Four-Wheel Drive Systems - 1 Speed Torque on Demand  or GO to Symptom Chart NVH  Symptom Chart - NVH.
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