Same Problem..
I received the same fault code (P0684). I cleared the code to see if it would happen again and it did. I had replaced one of the glow plugs before and I thought it would be something like that.
I parked for the night after my drive, and when I came back the next morning the battery was completely dead (multimeter read 0.0).
I recharged the battery, and when I began driving I smelled a burning smell. After seeing this post, I remembered the cabin air filter was also in the plenum so I checked that relay. Sure enough, it was melted. I uploaded pictures into my profile.
Question is, do I replace the relay or the relay & harness? Also, could this have caused my battery to die, and if I replace the relay will that solve the root cause of the problem?
I received the same fault code (P0684). I cleared the code to see if it would happen again and it did. I had replaced one of the glow plugs before and I thought it would be something like that.
I parked for the night after my drive, and when I came back the next morning the battery was completely dead (multimeter read 0.0).
I recharged the battery, and when I began driving I smelled a burning smell. After seeing this post, I remembered the cabin air filter was also in the plenum so I checked that relay. Sure enough, it was melted. I uploaded pictures into my profile.
Question is, do I replace the relay or the relay & harness? Also, could this have caused my battery to die, and if I replace the relay will that solve the root cause of the problem?