| It is very difficult to find the exact location of the defect. Replace the damaged fibre optic cable by laying a new cable parallel to the defective fibre optic cable. |
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| Via the menu options of the vehicle diagnosis tester „Guided fault finding“ or „Guided functions“, it is possible to ascertain the components between which the fibre optic cable has been damaged. |
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| The colour „yellow“ indicates a fibre optic cable that has already been repaired. |
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| Select „Guided functions“ or „Guided fault finding“ in the vehicle diagnosis tester. |
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| Select „Function/component selection“. |
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| Select „Electrical system“. |
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| Select „01 - On Board Diagnostic (OBD) capable systems“. |
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| Select „Ring interruption diagnosis“. |
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| Remove relevant components. |
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| Pull connectors off components. |
Caution | Do not excessively bend fibre optic cables. Minimum radius for bends is 25 mm. |
| Do not route fibre optic cables over sharp edges. |
| Make sure that the ends of fibre optic cables are not dirty and do not touch them with your bare hands. |
| Do not expose fibre optic cables to heat. |
| It is not permissible to twist 2 fibre optic cables together or one fibre optic cable with a copper wire. |
| Protect connectors and connecting cables against dust. Use protective caps from the case. |
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