No communication with pcm ? ses light on
No communication with pcm ? ses light on swapped a 98 computer harness for my 408 i put in my 95 and i cant get the scanner to read the pcm, ive check and rechecked my wireing going to the pcm from the dlc but i am not getting anwhere. check the power and ground pins to the pcm and all are correct.
The Service engine light does come on with the bulb check, so i know something is working inside the pcm, but i cant get it to scan. how can i tell if my pcm is bad or not?
The Service engine light does come on with the bulb check, so i know something is working inside the pcm, but i cant get it to scan. how can i tell if my pcm is bad or not?
Check your DLC connector for power across it's +12 and grnd pins first off. If they are good, review the PCM wiring and ensure all grounds are connected and all orange wires have +12
I checked over my wires for a week, no change, i decided to try and reprogram the computer with the tech II and it took it. after the programming the computer sent out serial data like it should. im wondering if it could have had an unrecognizeable software tune in it or the tune was corrupt or something.
I was very close to buying a new pcm from my parts department
anyway its working now, ready to be tested tomarrow.
I was very close to buying a new pcm from my parts department
anyway its working now, ready to be tested tomarrow.
Mine came with my turbo setup from Pro Turbo Systems, but BMR makes one that is chrome that you can actually get a hold of. Glad to hear you got it going, sorry you lost your tune. Hope you tuned it yourself so that it wont cost you anything.
