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jrd1990zr1
08-13-2019, 01:40 PM
I own a 1990 which does not allow you to check which tire sensor is bad. Gordon K. made me a plug in bow which will tell me which sensor is faulty. Only problem is I forgot the procedure to clear the memory. I understand he used a 1991 unit to make this, so I have 2 questions:

1. Was 1991 the first year which allowed you to determine which sensor is bad?

2. Is so can someone provide me with the proper procedure from the 1991 FSM to clear the codes?

Thanks!
Hib Halverson
08-18-2019, 12:26 PM
(snip)

1. Was 1991 the first year which allowed you to determine which sensor is bad?Yes.2. Is so can someone provide me with the proper procedure from the 1991 FSM to clear the codes?

Thanks!

To clear codes, with the key on and the engine off, use a TECH1 or Mastertech with appropriate software or connect ALDL Pin B to Pin A three times within ten seconds.
jrd1990zr1
08-18-2019, 02:26 PM
Yes.

To clear codes, with the key on and the engine off, use a TECH1 or Mastertech with appropriate software or connect ALDL Pin B to Pin A three times within ten seconds.

Don't have pins to clear codes, no ALDL on the box Gordon made.

So to follow up does Pin B to Pin A power the module up? So to clear do I need to turn power to the module on and off 3 times within 10 seconds?
Mystic ZR-1
08-18-2019, 06:22 PM
John
I’ve got a full set of Gordon’s jumper plugs,
I’ll bring them to Carlisle.
Not sure if there’s one for the LPTWS?
haven’t used them in a long time...
D
Jetjock
08-18-2019, 06:29 PM
The set that I got from Gordon does hae the LTPWS plug in there.
jrd1990zr1
08-19-2019, 09:10 AM
Guys,

I also have a set of jumper plugs from Gordon. This is something different. When I took Gordons class, he made me a box which allows you to determine which LPTWS is bad. The 1990 MY module in the car does not allow you to do this using the jumper plugs with the ALDL.

I am looking for the procedure to clear the module from a 1991, which is what Gordon used to make the box.

Does turning the power off and on within 10 seconds like Hib noted below clear a 1991 module?

Doug, can't make Carlisle this year, I'll give you a call. :cheers: