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View Full Version : LS9 pinout help


CamaroAJ
07-11-2020, 07:32 PM
Looking for a little help on the ECM wiring. On Service Information schematics it shows on connector X2 pins 2, 68 and 69 should be PU/WH, GY/WH and GY/WH for the bank 1 and sensor 1 low signal and B1S1 heater control circuit and B1S2. That’s all good until I try to wire the crank sensor. It shows the crank sensor should be in those terminals as well. Anyone have a good schematic that can tell me what one goes there and where the other is supposed to go?

CamaroAJ
07-11-2020, 07:35 PM
Looks like the crank is wrong in the schematic and should be terminals 27, 43, amd 63 if anyone can confirm.

randy
07-11-2020, 09:12 PM
https://www.chevrolet.com/content/dam/chevrolet/na/us/english/index/performance/resources/installation-guides/crate-engines/01-images/ls9-crate-engine-control-system-19354338.pdf

CamaroAJ
07-13-2020, 03:41 PM
https://www.chevrolet.com/content/dam/chevrolet/na/us/english/index/performance/resources/installation-guides/crate-engines/01-images/ls9-crate-engine-control-system-19354338.pdf

Awesome, thank you.