S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
Trip Computer: Testing and Inspection
Trip Computer, Troubleshooting
General Notes
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Removing and installing instrument cluster and instrument cluster components, See: Instrument Panel, Gauges and Warning Indicators
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See owner's manual for trip computer operating instructions.
If trip computer display is dim:
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Check bulbs, See: Lighting and Horns/Service and Repair
If all specified readings are obtained during troubleshooting and trip computer display remains blank:
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Replace Auto-Check system/trip computer printed circuit board.
If incorrectly formed symbols or lines appear on display:
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Replace Auto-Check system/trip computer display module. Before replacing a faulty component:
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Check wiring to component for open/short circuits according to wiring diagram, repair as necessary.
Test Conditions
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Battery OK
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Fuse S8 OK
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Fuse S15 OK
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Speed signal OK
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Coding connector correct.
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Voltage stabilizer OK.
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Use multimeter (Fluke 83 or equivalent), connector test kit VW 1594, VAG 1598 test box, adapter cables VAG 1598/4, VAG 1598/13, and
instrument/gauge tester VW 1301 when performing electrical checks.
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Always refer to appropriate wiring diagram when troubleshooting.