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Scan tool wont communicate with 2003 Saturn L300

Tiny
DIDDO
  • MEMBER
  • 2003 SATURN L300
Stock alarm disconnected fuel system unresponsive
Thursday, April 5th, 2012 AT 8:25 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Scantool might not be compatible-also check fuse Controls B+ 10amp in the underhood fuse block left side of engine compartment
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Thursday, April 5th, 2012 AT 9:50 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one I have seen a lot of the not being able to talk to the ecms being a bad bcm I have replaced a lot of them on that car.I would make sure the scan tool is compatible and works correctly. Also does the scan tool power up off the car?Also check to make sure the ecm has a nice tight clean ground to the intake manifold.
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Friday, April 6th, 2012 AT 1:41 AM

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