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jrd1990zr1 · 06-11-2006

Dave,

Some suggestions. If you have a 1990 Service manual the reset protocol is on page 9J-A-2. It has been my experience that the method described above of grounding and ungrounding for 2 seconds, 3 times will not work. 2 seconds is too short a time to reset the SIR system.

BTW di-electric grease is an insulator, it will not help with the contact situation.

This is how I clear the SIR codes.

With ignition (key) off ground the A to K pins of the ALDL.
Turn on ignition, in about 4 seconds the fault codes will begin to flash.
Unground A to K for exactly 3 seconds.
Ground A to K for eactly 3 seconds.
Unground A to K for 10 seconds, verify that all code 12 are flashing.
Turn ignition off.

I suggest that you purchase a set of diagonostic plugs from Gordon Killebrew, that make the process easier.

Good luck, it might take a couple tries.

06-11-2006	#8
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 899	Re: Infl Reset Dave, Some suggestions. If you have a 1990 Service manual the reset protocol is on page 9J-A-2. It has been my experience that the method described above of grounding and ungrounding for 2 seconds, 3 times will not work. 2 seconds is too short a time to reset the SIR system. BTW di-electric grease is an insulator, it will not help with the contact situation. This is how I clear the SIR codes. With ignition (key) off ground the A to K pins of the ALDL. Turn on ignition, in about 4 seconds the fault codes will begin to flash. Unground A to K for exactly 3 seconds. Ground A to K for eactly 3 seconds. Unground A to K for 10 seconds, verify that all code 12 are flashing. Turn ignition off. I suggest that you purchase a set of diagonostic plugs from Gordon Killebrew, that make the process easier. Good luck, it might take a couple tries.