I am having a little bit of problem with my aem ems after upgrading to V1.11, GM 3 bar map sensor and a new set of injectors. I checked everything and could only find that there is no power to the crank angle sensor. (There are 3 wires to this sensor) The injectors and spark fired so I can only assume that this is normal.

I will place the oem ecu back and see if I get any power into this sensor when I get home.

Does anyone know if there is a +ve power to this sensor? Is it a halleffect or a magnetic pick up sensor?

 

Actually I think it's photoelectric.

 

does that means there should be a +ve power supply?

 

It's a magnetic pickup. I don't have a wiring diagram here, so I can't answer which wire has V+.

 

BTW, Alex is being "creative" with the photoelectric answer.

 

thanks mate

 

plugged the oem ecu back in
no V+ at the crank angle sensor either
slow could you double check that there is a V+ supply?
I thought a magnetic pick up has no power supply and a halleffect has one...or is it the otherway around?
(I left my CD manual at my mechanic house on the weekend)

Anyway, I did a few more checks and found that I fouled a set of R5672A-8 I hope that this is my only problem.

 

Are you sure you have your voltmeter hooked up properly?

 

It appears that the CKP sensor is a Magnetic pickup that generates it's own weak AC signal. There is no V+ lead to the CKP sensor.

On the CKP connector there are 3 wires, pins 1 and 3 are White and black, and both grounds. Pin 2 blue is the sensor input to the PCM.

I'm not sure what configuration chages have to be made for the EMS to accept the CKP signal.

 

thanks for confirming that chris