I have looked up and down through the FSM and cannot find what the expected voltages are for the factory oem pressure sensor. I just want to check the presssure with a multimeter.

Anyone found the values before?

 

After an exhausting 1 minute 30 second search, I found the info in the '07 service manual on page DI-34.

 

Thx. On the 03 FSM it shows the expected voltage for 500kpa @ 3v and 0kpa at 1v. Does the sensor read linearly?

I was searching the EC as I thought it would tie back to the ECM for a CEL trigger.

 

I have no idea whether it is linear, but with two known points on the scale on the gauge, you should be able to determine the relationship between voltage and pressure with a battery, variable resistor, and voltmeter. You may need a small light bulb or similar load to get the test apparatus to work properly. You can get that sort of stuff at Radio Shack.