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04 WRX WAGON A/F RATIO GAUGE / ECU PINOUT VOLTAGE ISSUES PLZ HELP

2K views 0 replies 1 participant last post by  iknowanoah 
#1 ·
i have 04 wrx wagon the gauge i bought is a single wire 0-1v gauge that goes to sensor signal wire on all the ecu pinout diagrams ive found its shows the signal wire should have 0-1v. when i backprobe the signal wire on my ecu i have somewhere between 8-10v fluctuating which should represent waveform pattern and gauge doesnt work. i also noticed the sticker on my ecu says 12v. why are do my ecu pinouts not represent the same voltages in the diagram?
 
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