100S Quattro Wagon (Canada) V6-2.8L (AAH) (1992)
Trip Computer: Technical Service Bulletins
Function Selector Switch, Checking
A - function selector switch B - RESET button
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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 adaptor harness VAG 1598/13 to 10-point instrument cluster connector (black)
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set digital multimeter Fluke 83 (US 1119) to Ohm range
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connect adaptor harness VAG 1598/13 to Test box
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connect multimeter between sockets 1 and 3 of Test box VAG 1598
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must be infinite 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 Test box VAG 1598
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must be infinite 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 Test box VAG 1598
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must be infinite 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
^
replace function selector switch