So I ran the CPS test yesterday. It says should have 2-5 VAC with plugs out, grounded and roll it over. I got 1.3 VAC. Funny thing though unless I miss read the instructions it says set up just as OHM out the CPS. So disconnect the ECM plug and pin 57 to 58 to get reading. SO OK I get that. But why bother to ground plugs once you pull them if ECM is discon because coils wont get fire anyway.
@djh3 Manual says the cps on it's own can be tested first either at the wiring for the sensor or pins 57 and 58. Spec of the sensor is listed at 280Ω. The second part is done at the pins so that's why they gave the option of starting there first.
A big "I think" because I'm only guessing. The voltage required to jump the gap in a spark plug is much higher than if you simply ground the electrode. The resultant voltage will be so low and fast that a digital meter may be too slow to even register it. The manual says any movement at all is good and I'm sure you'd get a better indication with a cheap meter with a needle. If that is the case then removing the plugs and grounding the electrode as they indicate will give a much easier path to ground and the digital meter would trigger on the current and you'd see the 2 - 5 volts listed.
Sorry, you lost me here. I thought you were testing the cps strictly to see if it had the proper load and that there was a signal being generated into the ECU. It's simple a trigger which is upstream from the coil firing sequence. I think the ecu then transfers that as a ground signal to the coil causing it to build the charge and fire the plug. Pin 3 and 4.
Apologies if I got you off track. I'll just go back and sit and watch for awhile.
Naw Just following the T/S guide. The way I read it while set up to check out CPS see what voltage you get on pin 57 n 58. Should be between 2 n 5 ac with plugs out. Mine is just over 1vac. So my ponder is why ground plug if nothing is connected? Possibly just a safety incase thing? Or I completely missed something and was supposed to connect and test from different point. I'm betting $110 + shipping I got it rite.
My CPS got here Thursday and I got it in yesterday evening. Got bike around neighborhood today some and all seems good. This is only the second time I can ever remember of this type sensor going bad what would seem intermittent before complete failure. Monday I'm going to brave it to work with it.