Which sensors share the +5V signal? I have come up with ICP, IAT, EBP, EOT, EOP and ECT. Do these all use the signal? Any others I forgot?

Also, what would cause a bias in the signal? A short or open sensor?

 

I think MAP sensor gets it too.

 

I sure have have been referencing Wood-N-Things a lot lately.
Taken from the 2002 manual.
5 Volt VREF (CPS, MAP, EBPS, ICPS) is what is listed but it also hits pin 10 on the Throttle Position Sensor.

Here is the link to check it all out yourself. https://sites.google.com/site/woodnt...uty-electrical

Follow Pin 90's path.

 

VREF is used by these 3-wire sensors: Accelerator Position, Manifold Absolute Pressure, Barometer (Internal to PCM), Injection Control Pressure, Exhaust Back Pressure, Cam Position.

Look at the My Colored Wiring Diagram. The Lower R/H corner has most of the sensors and you can trace Pin 90 (VREF) from the PCM to see what gets it.