I've been trying to track down the source of some problems I have been having. Car doesn't run right, error code is always from the pressure sensor. After verifying that the sensor works properly, I discovered that while there were no breaks in the wiring harness, there was only 20 Ohms between the Vref for four of the sensors (5V, brown/white wire, from 2I) and the ground wire (0V, brown/black wire, from 3D). The harness didn't have the short, so I checked the ECU and it did. So before I replace the ECU, I want to make sure that this 20 Ohms is indeed a short and not the normal condition. Can anybody verify this?

 

I don't have a series five, so I can't do that. But wouldn't it be better to turn the key to On, engine OFF, and read the voltage on pin 2H by backprobing that wire. Then compare that with the value given in the FSM Fuel section?

SB 3.4 to 3.6vdc for a non turbo engine.

EDIT: Never mind. You most likely already did that.