I have a 2006 Cayenne S. I changed out the alarm siren today which necessitated removal of the relay carrier box. After reinstalling everything and plugging all the connectors and relays back in, the alarm siren worked as advertised. I started the car and got a check engine light and a PSM warning light in the instrument cluster. Car idled fine but the engine would not go past idle. The throttle pedal was completely dead. I could put the car in drive or reverse and it would just creep along at idle. I plugged in the durametric and it confirmed that the throttle position angle was "0" no matter what I did with the throttle pedal. I scanned the fault codes with duremetric and this is what came up as shown below. It seems that somehow something is preventing the throttle from working but it's hard to believe a couple of emission fault codes would make the car undriveable. I will double check all the connections again tomorrow but everything was plugged in correctly as far as I know. Does anyone have any ideas what to try next before towing the car to the dealer? Does anyone have an electrical schematic for the items in the relay carrier box?

Thanks!


[url=https://flic.kr/p/EV8TRG]

 

relay box underneath the dash?
You didn't happen to knock the throttle connector loose? It's right below the relay box if you working down there.

 

No I'm just a moron and didn't fully clip in one of the colored connectors in the relay box. It was getting dark and cold and being in a hurry I just overlooked it. Duh! Everything works like a champ now! Having to disassembly the whole relay water box to get to the alarm siren is a major PITA. Glad it's done...

 

Well glad it was at least something simple.