Tundra10
Joined: 14 Jun 2010
Posts: 102
Location: Scarborough, Ontario
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 Posted: Tue Nov 02, 2010 6:09 pm Post subject: VM1000C Fuel Pressure Sender Wiring |
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A hangar mate asked me for help troubleshooting the fuel pressure
sender wiring to his Vision Microsystems VM1000C. The unit is a few
years old and he has just recently taken his first flight. The fuel
pressure has never functioned.
The fuel pressure sender is a JPI 3060-17, which is 5-32 PSI, 2 wire
resistive, for fuel injected engines (he has an IO-360).
He has confirmed wiring continuity and tested for shorts. The
pressure sender has been replaced with a new one.
He called JPI/Vision Microsystems but they were quite uninterested and
unhelpful 
What they did tell him is that while the manual indicates connections
to P5 pins 4 through 7, this particular sensor should be connected
between P5-7 (fuel pressure ground) and P5-8 (unlabelled in the manual).
Configuration is also necessary. Section 40.3 has five choices. I
watched him try each one. The result is that the pressure immediately
rises to the top of the scale and then the readout is replaced with Err.
Has anyone had success making this work ?
Which pins did you wire the sensor to ?
Did you add a pull up resistor, or ground one of the leads ?
Which configuration option worked ?
Any ideas will be appreciated.
Jeff Page
Dream Aircraft Tundra #10
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