2006 379 Pete w/cm870 ISX.

[Peashooter67]

Rawze sir

All my other sensors are working properly that are currently being utilized except the egr valve and now the egr temp. What was driving me crazy is the ecm shows pid 9 as amb tem sensor input pid at ecm but can’t find out where it goes.


At the vary least now I know what electrical tree branch if it were to look on. Seems all the temp sensors are in series on the same electrical line.

[Andre_The_Giant]

My 06 cm870 value always sits at 72. Doesn’t say calculated but I think it doesn’t use it as a reading at all

[Rawze]

registering your engine ser# on quickserv.com (free) will let you get to the ecm wiring diagrams for it.