Ask a Mechanic Online and Get Answers to Your Car Questions
Hello, my name is***** check engine light is not coming on that would mean PCM is missing power/ground or PCM itself has failed. Here is a connector diagram to check power/grounds before replacing. Let me know if you have more questions or if there is anything else I can do to help. Thanks.
The BCM could cause this too but not as likely. I'll also upload diagrams so you can test power/ground at BCM. Then to know for sure if problem is BCM or PCM you need a scan tool capable of communicating with both.
Here is wiring diagram for BCM also, I'd expect around a $500 repair at a shop. It is also possible ignition switch is problem which you will notice if module is missing ignition power.