pasinead1991
Well-Known Member
Hi everyone I’m working on a cat 325 c that has no hi idle and won’t slew checked all pressure switches. Monitor gauges come on with key on and then won’t read anything it starts monitor says ECM error.
There are 2 ecu s behind the cab one has lights come on red yellow and green then red hose out and green will stay on then yellow will light up.
The ecu underneath won’t light up at all have power and ground there. It has an ecu mounted on the engine also. Its a cat 3126 engine. Is the bottom ecu behind the cab being used I believe this machine came with different engines. Was wounderin if the second ecu behind the cab is being used because the engine has its own.
There are 2 ecu s behind the cab one has lights come on red yellow and green then red hose out and green will stay on then yellow will light up.
The ecu underneath won’t light up at all have power and ground there. It has an ecu mounted on the engine also. Its a cat 3126 engine. Is the bottom ecu behind the cab being used I believe this machine came with different engines. Was wounderin if the second ecu behind the cab is being used because the engine has its own.