VU V6 P1372, No Reference Pulses While Cranking, error.

[lout]

just had a quick think
the dfi controls timing during cranking
i am unsure if the ecu even receives pulses during cranking

 

[Fu Manchu]

With the vident i400au scan tool l have, if l scanned the bcm, it'll give the security no.

Scan bcm, programming, get bcm security no.
I just went & done it. They where the steps l did.

View attachment 259528

http://[URL]https://www.azscanners....MIh6mKu8O4-AIVkppmAh3RiQ2QEAAYASAAEgLU0PD_BwE

[/URL]

That’s not your security number though, is it? It’s not.
Maybe edit the photo would be a good idea.

 

[tmcgr]

now you need to get multimeter or scope
and start checking the crank sensor circuitry

@lout @Lex will let yous know how i go tomorrow

 

[tmcgr]

just had a quick think
the dfi controls timing during cranking
i am unsure if the ecu even receives pulses during cranking

so try swapping that?

 

[Lex]

so try swapping that?

What's the error codes you are getting with the scanner?

 

[tmcgr]

What's the error codes you are getting with the scanner?

P1372 - No Reference Pulses While Cranking

 

[Lex]

P1372 - No Reference Pulses While Cranking

This may help?
Have you seen this before?

Part 1 -GM 3.8L Ignition Control Module and Crank (3X, 18X) Sensor Test

Page 1 of 5 : GM 3.8L Ignition Control Module and Crank (3X, 18X) Sensor Test. How the 3.8L Ignition Control Module (ICM) Works. The GM 3.8L 3X CKP and 18X CKP Sensors. What Will I Test?

easyautodiagnostics.com

 

[tmcgr]

@lout @Lex after some multimeter probing i have found that the coil pack/dfi isn’t getting 12v, it’s getting 0.046 around that, what would this suggest?

 

[lout]

what terminals was this measured at

@lout @Lex after some multimeter probing i have found that the coil pack/dfi isn’t getting 12v, it’s getting 0.046 around that, what would this suggest?

 

[tmcgr]

what terminals was this measured at

the first one which (from my understanding) should be +12v and the second one across which should be power for the CrankAS