100CS Quattro Wagon V6-2.8L (AAH) (1992)
Trip Computer: Testing and Inspection
Function Selector Switch, Checking
A- Function selector switch
B- RESET button
Select all computer functions in sequence by pressing upper or lower part of function selector switch -A-
If functions cannot be selected:
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Remove instrument cluster and disconnect connectors.
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Connect adapter cable VAG 1598/13 to 10-point instrument cluster connector (black).
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Set multimeter (Fluke 83 or equivalent) to measuring resistance (Ohm).
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Connect adapter cable VAG 1598/13 to test box.
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Connect multimeter between sockets 1 and 3 of VAG 1598 test box.
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Must be infinity Ohms (no continuity)
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Press RESET button -B-.
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Must be 0 ohms (continuity)
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Connect multimeter between sockets 1 and 4 of VAG 1598 test box.
-
Must be infinity ohms (no continuity)
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Press upper function selector switch.
-
Must be 0 Ohms (continuity)
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Connect multimeter between sockets 1 and 2 of VAG 1598 test box.
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Must be infinity ohms (no continuity)
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Press lower function selector switch.
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Must be 0 Ohms (continuity)
If one of the specified values is NOT obtained:
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Check wiring for open circuit according to wiring diagram, repair as necessary, or
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Replace function selector switch.