70 pin to 40 pin

Will ecm communicate with Cat et or with generic code reader? Is it pete? What year? Call me 7045072453

 

first of all be sure about power supply. battery power and ign. power.

if you ECM dont commuticate to Cat ET via 6-pin ore 9-pin connector look for small J1708 connector near the ECM and try to use probe cabels to connect adapter (RP1210 ore Cat) to ECM and read codes.

seems to me you have ign. wiring issues. Becouse if you connect other cabine-ECM wires engine may start, but idling only...

OUH! Is your vehicle with VECU? ore engine unit is directly controlled?

 

I wouldn't worry too much about it. I know of 2 different diesel pickup shops who have spent days diagnosing transmission issues on 2 different trucks after a trans rebuild and a clutch install. One completely tore the trans back apart trying to figure out why the truck wouldn't move, (thinking they had installed something wrong) and both of them only had accidentally knocked the transfer cases into neutral.

 

if you go to shop where they say they have diagnostic equipment it doesn't mean there is a good technicion who can do something not usuall, like ECM ore engine swap.

I got the experience with engine/tranny/ecm swap and I can tell you it is not so easy deal.

anyway to do all you need a laptop with cat ET and RP1210 adapter.

When you'll start engine unit and when you start engine it is just a beging. some other buttons ic cbine, progarammable inputs/outputs and some other things... well, anyway you have no way out, you'll do this truck

 

GoGo: take it easy on yourself. Always the way with me. I try to make everything the best i can and often make simple things complicated.

 

i'm trying to do the same but c-12 40 pin truck to a c-12 70 pin what wires need to wiring diagram for both ?

 

doing the same thing but c-12 1yn0 40 pin TO c-12 2ks0 70 pin what wires to what pins or wiring diagrams of both

 

11 year old thread most are gone I believe.