I believe there are 2 ground wires that ground via the ECU mounting bolts. One is from the engine harness through the firewall. I am trying to locate the other one, if it exists. What is its routing path to the ecu? A pic would be helpful.


Thanks in advance

 

I believe the other ground comes form an extra harness that is for the fan. This allows the fan to stay on to cool down the engine in order to prevent engine fire. It plugs into the main harness. It does'nt matter how it's routed as long as it is and grounded.

 

Thanks for the response.

I was hoping to discover how it is routed because I cannot seem to see/find this wire. I wanted to retrace its path from the ecu so I can locate and ground it

btw... my fans come on with my PFC