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Home >> Audi >> 1987 >> 5000CS Turbo L5-2226cc 2.22L SOHC Turbo (MC) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Testing and Inspection >> Component Tests and General Diagnostics >> Boost Pressure Output
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Boost Pressure Output

Boost pressure indicator, checking





- with control unit connector attached to control unit, connect voltmeter to terminal 17 wire of control unit and ground
- run engine at idle
^ specification: 0.25-2.5V


If voltage reading NOT OK
- replace control unit

If voltage reading OK, but boost pressure NOT indicated on instrument cluster
- check wiring between terminal 17 of control unit and instrument cluster indicator according to current flow diagram
- repair as necessary
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