100S Quattro Wagon (Canada) V6-2.8L (AAH) (1992)
Trip Computer: Technical Service Bulletins
Fuel Consumption Signal, Checking
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connect adaptor harness VAG 1598/13 to ten-point instrument cluster connector (black)
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connect adaptor harness to Test box VAG 1598
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set digital multimeter Fluke 83 (US 1119) to 2 Volt range
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connect multimeter between sockets 5 and 1 of Test box VAG 1598
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start engine
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raise and lower engine speed between 1000 and 4000 RPM
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must be approximately 0.3-1.0 V depending on engine RPM