ECI checker reads a value of 0 for the pressure sensor ( channel b2 on the checker) across the board. Correct voltage should read 2.1-2.5 volts with the ignition in the on position, and 0.2-1.2 volts at idle (at sea level).
I've poured over the FSM and the sqc archives ad nauseam regarding any information on the barometric pressure sensor with no success. So I have a few questions for any takers:
1) assuming that the harness is in good repair, does this reading imply that I need a new mass air flow sensor?
2) could this out of spec reading cause a rich issue at wide open throttle?
3) in order to trace the wiring for a potential break, or to back probe the connector itself, which wire in the harness leading to the mass airflow sensor connector is the wire for the pressure sensor?
Thanks in advance for any guidance or insight.
Edited by Jay40245, 10 May 2019 - 06:15 PM.