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