LPTWS question - ZR-1 Net Registry Forums

jrd1990zr1 · 08-13-2019

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

Quote:

Originally Posted by jrd1990zr1

(snip)

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

Yes.

Quote:

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

Quote:

Originally Posted by Hib Halverson

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

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

The set that I got from Gordon does hae the LTPWS plug in there.

jrd1990zr1 · 08-19-2019

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.

08-13-2019	#1
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 924	LPTWS question 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! __________________ 1968 convertible Lemans Blue, 1986 coupe Medium Blue NCRS Top Flight (sold), 1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold), 1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018, 2003 Anniversary Red Convertible (sold)

08-18-2019	#4
Mystic ZR-1 Join Date: Jan 2010 Location: Mystic CT Posts: 2,627	Re: LPTWS question 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

08-18-2019	#5
Jetjock Join Date: Mar 2008 Location: Auburn, KY Posts: 557	Re: LPTWS question The set that I got from Gordon does hae the LTPWS plug in there. __________________ Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 ZR-1 Net Registry Board Secretary

08-19-2019	#6
jrd1990zr1 Join Date: Dec 2005 Location: Delanson, NY Posts: 924	Re: LPTWS question 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. __________________ 1968 convertible Lemans Blue, 1986 coupe Medium Blue NCRS Top Flight (sold), 1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold), 1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018, 2003 Anniversary Red Convertible (sold)