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hello does anyone know about a toyota IGT system i know is a square wave 0 to 5v but when looking at the oscilloscope at high RPM the square wave drops to -4.87 so i wonder is this normal anyone feedback would be appreciated thanks
2008 toyota rav4 v6 with a p0301 is it normal for the IGT signal wire to drop as low as -4.87v??
new spark plug
new injector
powers and grounds check out
voltage drop checks out
IGF is good
relative compression is good with even peaks
coil fire nice and strong