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Knio · 12-14-2019, 02:32 AM

I think I found something interesting.

I checked all the signals with a scope and they all look OK individually:

phase1.PNG

bank 1 at sensor
IMG_2156_1.JPG

bank 2 at sensor
IMG_2157_1.JPG

bank 1 at ECU
IMG_2159_1.JPG

bank 2 at ECU
IMG_2160_1.JPG

crank.PNG

crankshaft at ECU
IMG_2161_1.JPG

And then I noticed this drawing in the manual and decided to test both channels:

wave.PNG
IMG_2162_1.JPG
IMG_2163_1.JPG
IMG_2165_1.JPG
IMG_2166_1.JPG

It looks like bank2 is advanced about 2ms relative to bank1, if they're supposed to be lined up like the manual shows. this would be about 5 degrees.

I also tested phase vs crank, but these did not vary at all with RPM. maybe IVT doesn't kick in before 3500, or the ecu disables it entirely in limp mode.

I'm not really sure the 5 degree out of phase is an error or not without knowing exactly what the gears look like, but this timing could be off.

12-14-2019, 02:32 AM	#5 (permalink)
Knio Base Member Join Date: May 2011 Location: Palo Alto, CA Posts: 141 Drives: 40th Rep Power: 14	I think I found something interesting. I checked all the signals with a scope and they all look OK individually: phase1.PNG bank 1 at sensor IMG_2156_1.JPG bank 2 at sensor IMG_2157_1.JPG bank 1 at ECU IMG_2159_1.JPG bank 2 at ECU IMG_2160_1.JPG crank.PNG crankshaft at ECU IMG_2161_1.JPG And then I noticed this drawing in the manual and decided to test both channels: wave.PNG IMG_2162_1.JPG IMG_2163_1.JPG IMG_2165_1.JPG IMG_2166_1.JPG It looks like bank2 is advanced about 2ms relative to bank1, if they're supposed to be lined up like the manual shows. this would be about 5 degrees. I also tested phase vs crank, but these did not vary at all with RPM. maybe IVT doesn't kick in before 3500, or the ecu disables it entirely in limp mode. I'm not really sure the 5 degree out of phase is an error or not without knowing exactly what the gears look like, but this timing could be off.