Cummins Isl no power to vgt

[hambone3293]

Cummins ISL CM2150 CPL424 no ecm code on quickserve, ECM failed no communication sent to a service center to validate failure. Did not have image of old ECM Got new ECM and was flashed with features and parameters installed. Put on engine and now do not have power 12 volt to VGT have verified that wiring is good back probed at pin 40 and pin 33 (pins for vgt) no voltage. Service center thought ecm replacement was bad sent another and just cloned first one still same result getting codes 2636, 0687, 1844 . Engine runs now but no VGT have verified voltage to both input pins on 4 wire plug and key voltage. Anybody ever have this issue? thanks

[tree98]

Have you load tested that 12v wire from ECM to VGT ? Sounds like a break in that wire somewhere. A continuity test won't always catch it. Put a small incandescent (not L.E.D) light bulb on the circuit to load test it.

[hambone3293]

Have went down to ecm no power out of pin 40 which is 12 volt to 33 which is ground but thanks