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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wires >> 97 Wires >> Wiring Harness And Connector Repairs >> Fiber-Optic Cables, Repairing >> Determine Position Of The Error

Determine Position Of The Error

Special tools and workshop equipment required 

CAUTION:

Do not bend the fiber-optic cable too much. The bending radius must be no less than 25 mm.

Fiber optic cables must not be routed over sharp edges.

The fiber-optic cable must not be dirty or touched with bare fingers.

Fiber optic cables may not be heated.

It is not permitted to twist together 2 fiber optic cables or one fiber optic cable with a copper wire.

Protect the connector and the connection box from dust. Place the cap on the trunk.

Procedure 

It is very difficult to find the exact location of the problem. Replace the damaged fiber-optic cable and lay a new wire parallel to the defective fiber-optic cable.

NOTE:

Via the "Guided Fault Finding  " it can be determines which component of the fiber-optic cable is damaged.

A fiber-optic cable that needs repair is represented by a "yellow" color.

-- Perform in the "Off-board Diagnostic Information System Service" the "Ring break diagnosis" function in the Vehicle Diagnostic Tester.

-- Remove the affected components.

-- Disconnect the connector from the components.

-- Assemble the fiber-optic cable: