LTPWS diag mode
Melting Slicks
Joined: Feb 1999
Posts: 3,261
Likes: 9
From: sonoma ca
I assume you have an 89? On that particular year I don't know which pins to use to interrogate the system. I'm sure someone will have the answer for you & this will serve to give you a bump to the top.
If you have a faulty wheel sensor there is nothing to do after you replace it. It shud reset automatically,as far as the DIC lights are concerned. You can clear any stored codes by grounding the terminals X to X number of times with in 10 secs.
If you have a faulty wheel sensor there is nothing to do after you replace it. It shud reset automatically,as far as the DIC lights are concerned. You can clear any stored codes by grounding the terminals X to X number of times with in 10 secs.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
'89 was the first Year and the LTPWS consists of 4 wheel sensors and a Receiver which isn't linked to the ECM. There are no trouble codes and the Receiver, which is long out of production, is prone to picking up stray electrical noise and setting off false alarms. Manual Procedure for troubleshooting is to jack up the car and with the sensor pointing north (it's opposite the valve stem), hit the bottom of the tire with an air hammer. If the light goes off, the wheel sensor is bad.
If the warning lights stay illuminated after you start it, the Receiver is bad. The last time I checked, Contemporary Corvettes would sell you a used one for a 100 Bucks with no guarantee that it worked. Sensors are $150 and were still available from a Dealer.
Owner's and Shop Manual instructs you not to rotate the tires as each sensor was unique to the wheel it was mounted on. That was changed by a Service Bulletin which said it didn't matter what sensor was where as long as it had one of each color (they're color coded).
Receiver is behind the Passenger's side Crash Panel. Power and Ground is from the VATs Module.
If the warning lights stay illuminated after you start it, the Receiver is bad. The last time I checked, Contemporary Corvettes would sell you a used one for a 100 Bucks with no guarantee that it worked. Sensors are $150 and were still available from a Dealer.
Owner's and Shop Manual instructs you not to rotate the tires as each sensor was unique to the wheel it was mounted on. That was changed by a Service Bulletin which said it didn't matter what sensor was where as long as it had one of each color (they're color coded).
Receiver is behind the Passenger's side Crash Panel. Power and Ground is from the VATs Module.
Pro
Joined: May 2006
Posts: 536
Likes: 0
From: Humble Texas
Ltpws
Originally Posted by SunCr
'89 was the first Year and the LTPWS consists of 4 wheel sensors and a Receiver which isn't linked to the ECM. There are no trouble codes and the Receiver, which is long out of production, is prone to picking up stray electrical noise and setting off false alarms. Manual Procedure for troubleshooting is to jack up the car and with the sensor pointing north (it's opposite the valve stem), hit the bottom of the tire with an air hammer. If the light goes off, the wheel sensor is bad.
If the warning lights stay illuminated after you start it, the Receiver is bad. The last time I checked, Contemporary Corvettes would sell you a used one for a 100 Bucks with no guarantee that it worked. Sensors are $150 and were still available from a Dealer.
Owner's and Shop Manual instructs you not to rotate the tires as each sensor was unique to the wheel it was mounted on. That was changed by a Service Bulletin which said it didn't matter what sensor was where as long as it had one of each color (they're color coded).
Receiver is behind the Passenger's side Crash Panel. Power and Ground is from the VATs Module.
If the warning lights stay illuminated after you start it, the Receiver is bad. The last time I checked, Contemporary Corvettes would sell you a used one for a 100 Bucks with no guarantee that it worked. Sensors are $150 and were still available from a Dealer.
Owner's and Shop Manual instructs you not to rotate the tires as each sensor was unique to the wheel it was mounted on. That was changed by a Service Bulletin which said it didn't matter what sensor was where as long as it had one of each color (they're color coded).
Receiver is behind the Passenger's side Crash Panel. Power and Ground is from the VATs Module.
Look inside owners manual it give situations if the light comes on.
THE DEALERSHIP CAN ALSO DISENGAGE THIS LIGHT .
