cmp+ not reading

General support questions and announcements for MS3. See also MS3 manuals.

Moderators: jsmcortina, muythaibxr

Post Reply
jsntckr
MS/Extra Newbie
Posts: 17
Joined: Wed Sep 07, 2016 4:45 pm

cmp+ not reading

Post by jsntckr »

I am having trouble getting the cmp+ signal to read at all. I have a gt101 sensor on the crank with 36-2 wheel and on the cam with a single tooth.

The sensor on the crank is reading just fine using the ckp+ wire, 12v power, proper ground and a 1k resistor between power and ckp+

I have wired the sensor on the cam the exact same way using 12v power, good ground, and it's own 1k pull up resistor. I swapped sensors and same result. Only get input through ckp+ wire.

Each sensor reads same voltages and any given time, and signals are both making their way to the pins 6 white and 26 yellow. (Ms3pro)
Ive used the high speed logger to test each. When waving a metal object in front of each, only the ckp+ reads.
Here's the msq, is there a setting I'm missing that will allow the cmp+ to read? Thanks a lot.
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: cmp+ not reading

Post by Matt Cramer »

Those settings should give a reading. What happens if you take a composite log with the spark mode set to "log crank and cam"?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Post Reply