PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

e38 standalone, no power to MAP,ECT and alll 5volts form gray connector

Thread Tools
 
Search this Thread
 
Old 07-20-2011, 09:14 AM
  #1  
Staging Lane
Thread Starter
 
miguelc's Avatar
 
Join Date: Jul 2009
Posts: 69
Likes: 0
Received 0 Likes on 0 Posts

Default e38 standalone, no power to MAP,ECT and alll 5volts form gray connector

greetings

How do I diagnose a faulty ECM? It seems that every sensor hooked up to the gray connector doesnt have a 5v supply, also tps reads 100... could you help me, my boss doesnt want to buy a new ECM for testing.
thanks

PD...I am using a 12V source outside the car... do ECT and sensor require grounding?
Old 07-21-2011, 01:10 PM
  #2  
TECH Senior Member
iTrader: (3)
 
Old Geezer's Avatar
 
Join Date: Jun 2004
Location: GA, USA
Posts: 5,640
Received 70 Likes on 62 Posts

Default

Your outside 12V source ground hooked into pcm ground[s]??




All times are GMT -5. The time now is 01:57 PM.