Re: Need help on 87 GM Buick GN ESC pin-out...

[JTesta1966@aol.com]

In a message dated 2/9/00 9:49:34 AM Eastern Standard Time, 
iguest@viewlogic.com writes:

<< Now I have the module, but have no idea what pins to wire to the ECM, knock
 sensor, Power and GND etc..  The only thing I do know is that the one wire
 to
 the ECM is kept 'high' until knock is detected, and then pulled 'low' to
 ground to retard timing for the duration of the knock. - Most auto books
 show just a color coded wiring harness for 4 wires.  I don't have the
 harness and this ESC module has 5 pins!!
  >>

I dont know about 4 wires. My car is home, and my diagrams show only 4. 
ANYWAY, this image clearly shows which wire goes high.

http://www.gnttype.org/techarea/images/wiring_images/ecm_turbo.jpg

HTH
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Testa                                         TType86 on #BuickGN
jtesta1966@aol.com                               buick.fiendish.net:6667
ASE Master Technician            NJ Lic. Motor Vehicle Inspector
L1 Adv Eng Perf Certified     NJ Licensed Emissions repair Tech
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