McQue
NAXJA Forum User
- Location
- Plainville, Connecticut
-
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CPS scope picture test
- Thread starter McQue
- Start date
old_man
NAXJA Forum User
- Location
- Loveland, Colorado
A bit fuzzy but looks like what I would expect. Amplitude? Where were you sampling the signal from?
stewie
NAXJA Forum User
i didnt know child protective services had a scope!
McQue
NAXJA Forum User
- Location
- Plainville, Connecticut
I sampled that signal by piercing the wire in the harness about 2 feet before it enters the PCM... amplitude was almost 4.8 volts. Picture stinks because I took it at an angle in the dark of my garage,with a cheap, hand held, digital camera. I was happy to get a good look at 1 full revolution of the flywheel.
Next thing I an going to check is Cam Shaft Position Sensor on Channel 1 versus Crank Shaft postioning sensor on Channel 2 to see how well things are in synch...
Jeep is an 01...Not experiencing any problems... just want to check to see if anything is getting weak or mechanically sloppy in these two circuits.
Think I will just use a couple of scotchlock splice connectors and connect up a permanent 2 pin test connector to the harness wires. ...My autoxray scanner reads out the rest of my sensors so I should be all set with these two splices.
- Location
- Rainy side of Washington
Awesome I have been wanting to get a look at these signals for a while now! Just never wanted to lug the scope downstairs and outside.
Rather than splice a connector in, I would get a connector pair at the junkyard and splice it together to act as an extension cord a few inches long, then splice into that and only insert it in the circuit when testing. The less you leave open for crap to accumulate in during normal use, the better.
Rather than splice a connector in, I would get a connector pair at the junkyard and splice it together to act as an extension cord a few inches long, then splice into that and only insert it in the circuit when testing. The less you leave open for crap to accumulate in during normal use, the better.
McQue
NAXJA Forum User
- Location
- Plainville, Connecticut
yea... I want to minimize the wire modifications to the harness, so I plan to simply tap only those two sinal lines with short pigtail that will be capped until I need I need them.
