Help-Crank Relearn E38 ECM
#1
Help-Crank Relearn E38 ECM
I have an E38 ECM running my LY6 in my 72 Chevelle. Car runs good but I have 1 code P0315 Crankshaft Position System Variation Not Learned.
I have initiated the CASE with my scan tool but it does not allow it to complete.
Since Im running a TKO, I have no park/Neutral switch, CPP switch, or stop lamp signal hooked up to the ECM.
On my E38 pinout shows pin 1/C1 for park/neutral signal but thats on an auto harness only, I have a manual harness.
What pin should I wire to allow crank relearn?
If I ground pin 1/C1 will it work?
I have initiated the CASE with my scan tool but it does not allow it to complete.
Since Im running a TKO, I have no park/Neutral switch, CPP switch, or stop lamp signal hooked up to the ECM.
On my E38 pinout shows pin 1/C1 for park/neutral signal but thats on an auto harness only, I have a manual harness.
What pin should I wire to allow crank relearn?
If I ground pin 1/C1 will it work?
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#10
I cannot locate the Parking brake input on the E38 Pinout. do you know which pin it is?
I do have the pin for stop light signal, does it require +12volts or ground?
I will ground the CPP pin just for peace of mind.
I keep deleting the code but it pops rigth back up causing the fans to run and all that. I dont mind wiring the stuff, I just cant find the info on which way it needs to be wired.
If someone can answer the 2 above questions, I will get it done.
#12
So will I still be able to do the relearn? Does the relearn really matter in my application?
#14
TECH Resident
Is there a procedure to follow? Have seen one for a truck.
Thks
#15
This is old, but
Anyone ever get this sorted out? I'm having a similar issue. tuner has tried everything and the car won't go above 4000 rpm. Tricked it once, but every time you shut if off and restart it, it defaults to the 4000 rpm issue and wants the relearn. Tuner says that even when he applies 12V to the brake pin, the ECM doesn't recognize it.