Attached are the complete set of schematic diagrams for the engine performance. Hope it is helpful.
April, 28, 2011 AT 8:11 PM
The FPDM is behind the back seat, passenger side, accessed from the trunk.
April, 28, 2011 AT 9:07 PM
Low fuel pressure and code p0190, any Ideas?
April, 28, 2011 AT 9:27 PM
You need a scan tool to prompt the FPDM to increase pressure so you can see if the pump FPDM and the pump responds. The code is for the fuel rail pressure sensor so that circuit would have to be troubleshooted. You would need the scan tool for that also.
April, 28, 2011 AT 9:48 PM
Ok, I can troubleshoot the fuel pressure sensor, Can I get resistance specification. Thanks
April, 28, 2011 AT 9:51 PM
No, you can test resistance. It is a 3 wire, 5v reference return sensor. You need to use a scan tool to see what the computer is seeing.
April, 29, 2011 AT 9:07 PM
What type of scan tool? I have a obd2 reader, bought it a couple of years ago, it cost about 100 bucks. I have software and PC cable. Is a scanner and reader the same thing?
April, 29, 2011 AT 9:48 PM
No, not at all. What you need costs more in the $8,000 range.
April, 30, 2011 AT 3:59 AM
Ok, I tested resistance on FRP sensor. On sensor FRP to VRFE: 44.2k ohms, FRP to Sig Rtn: 44.2k ohms, and VREF to Sig Rtn: 1.4k ohms.
Also tested all 3 wires for opens between sensor and PCM and there was none.
Code p0190 is the only code that comes on, and wires going to FPRS are shared by lots of other sensors.
April, 30, 2011 AT 11:06 AM
All that means nothing. Let me know if you get the necessary scan tool to resolve the issue.