Vehicle diagnostic, testing and information system -VAS 5051-, measurement mode: Multimeter, voltage measurement (20 V =) l
| Adapter -V.A.G 1598/11- connected | Voltage tester -V.A.G 1527/B- |
Test step | Test box -V.A.G 1598 A- socket | Being tested: | | Specification | Remedies if the specification is not attained |
3.2 | 45 + 44 | Voltage feedback at the fresh-air blower -V2- | | | –
| Using the current flow diagram, check the wiring between control unit for the fresh-air blower -J126- and the operating and display unit for air conditioner/Climatronic -E87- |
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| Fresh-air blower is not running |
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| Check the voltage supply to the fresh-air blower -V2- → Chapter |
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| Replace the fresh-air blower control unit -J126- |
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3.3 | 45 + 44 | Voltage feedback at the fresh-air blower -V2- | –
| Switch the voltage tester between socket “43” and terminal “30” → Note |
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| The fresh-air blower -V2- is running |
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| Locate and rectify the open circuit in the wiring between the fresh-air blower control unit -J126- and the operating and display unit for air conditioner/Climatronic -E87- |
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| Check the voltage supply to the fresh-air blower -V2- → Chapter |
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| Replace the fresh-air blower control unit -J126- |
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