1st Gen R53 Cooper S Gauges died, now car wont start. 02 R53.

2 weeks ago I installed the SP meth controller with the Alta boost gauge instructions, to the 12V switched on the column. Yesterday while driving my tach and speedometer both died, as well as the power to my HVAC and headlights.

• Nothing works on the tach except the turn signal light. I can still use cruise control but the light doesnt function.
• The speedometer shows my airbag warning light, but doesnt show that my speed sensors arent working. It shows milage, but its not counting anymore.
• Headlights/foglights dont work except I can activate the high beams by holding the stalk.
• I recently replaced the front 2 speed sensors, and the warning light went away for 3 days.
• I checked every connection on the meth injection and have found no faults. I then disconnected power to the system.
• I have checked every relevant fuse in the cab, and in the engine bay.
• I have removed and cleaned the ignition switch.
• When starting the car the tack will climb to 2,000 then drop back to 0. The speedometer doesnt not move from 0. None of the lights other than the airbag warning function at any time.
• AFAIK everything else is functional.
• I removed the tach and that did not solve the problem.
• The BCM is dry as a bone.
• All the pins on the ABS are clean and shiny.
• Im getting a CEL code of p1612, but I cant find much info about that.

Now the car wont start at all, but while its trying to turn over everything works. The AC lights up, fuel and temp gauges function.

 

Its like 2 months old. I had it on a battery tender lastnight just to be safe. It hasnt made any difference.

 

I checked through the meth install and everything was good. Nothing shorting, nothing broken. Grounds are all still solid. I have since disconnected power to the setup.

 

I used the wire described here in step #6.

http://altaperformance.com/attachment/74763-.pdf

 

I know the one on the passenger side motor mount is solid. Any I should look for specifically?

 

Ive seen others say they were having similar issues and disconnecting the tach made the speedo work. I pulled mine real fast without any effect. Guess I need to pull out the speedo next.:mad2:

 

I can no longer connect to the OBDII to see if I have any other codes. I havent done anything that should have affected that.

Edit: I should clarify, I am able to connect to the obdII reader, but it cannot connect to the ECU it says. It is receiving power.

 

I have reset the ecu through the controls twice.

 

I just pulled it. Then proceeded to close the hatch. I have an 02 so no emergency pull to open it again. Electric only.

 

I took my rear seats out so I can just climb back in there. It had no effect.

Both the driver-side and passenger-side kick panels and assorted nonsense is all dry and clean.

 

Still not having any luck. Ive take the speedo and the tach out and gone through them. Ive also cleaned the connector I tapped into, it was a bit dirty. As well as the connector that is directly under the fuse box. All with no luck.