TurbochargedBerserker Posted February 10, 2005 Report Share Posted February 10, 2005 So I needed to know where the TPS wire was on my truck for the megasquirt. I hopped over to LS1 and did a search for TPS and poster BigTex. Second post I looked at had this info: Thank you for the pictures. Thats exactly what I needed. The electrical connector is physically the same as the 03+ trucks. But the trucks have 8 pins inside while the LS2 has 6 pins. Doing a little research, I've got.... LS2 90mm PIN ID A.) ACT2 B.) ACT1 C.) +5v TPS Reference – Common to both TPS’s D.) TP1 Signal 0-5v E.) Common Ground F.) TP2 Signal 5-0v 03 TRUCK TB Pin - Wire Color - Function A - YEL - TAC Motor Control 1 B - BLK/WHT - Low Reference C - BRN - TAC Motor Control 2 D - BLK - Low Reference E - LT BLU/BLK - 5 Volt Reference F - PPL - TP Sensor 2 Signal G - DK GRN - TP Sensor 1 Signal H - GRY - 5 Volt Reference Quote Link to comment Share on other sites More sharing options...
BigTex Posted February 10, 2005 Report Share Posted February 10, 2005 Glad I was able to help without knowing I was actually helping. I think. Quote Link to comment Share on other sites More sharing options...
TurbochargedBerserker Posted January 13, 2006 Author Report Share Posted January 13, 2006 TTT as this topic is coming up again Quote Link to comment Share on other sites More sharing options...
BigTex Posted January 15, 2006 Report Share Posted January 15, 2006 Let me add a little something to this thread: For some tech info on the workings of these TBs, see my post here: http://www.SilveradoSS.com/forums/index.ph...ndpost&p=236974 Quote Link to comment Share on other sites More sharing options...
shadowsniper3006 Posted January 15, 2006 Report Share Posted January 15, 2006 kind of an off the wall the question....but when i installed my BBK 80mm TB i kept getting a error code that would say "reduce engine power" or something on the dash. The truck would only have very low rpm, but if i put the stock TB back on it would be fine so i gave up on the bbk. So if i wanted to check the TPS volts and see if thats my problem, which wire would i check for the volts, E or G?? and what should the correct volts be at idle and WOT. Thanks and sorry for the off topic post Brad Quote Link to comment Share on other sites More sharing options...
TurbochargedBerserker Posted January 16, 2006 Author Report Share Posted January 16, 2006 Check both TPSs. There is a nasty code in the PCM where if TPS1 doesn't match TPS2, it slams the TB closed and disables the TB until you reset the code. Quote Link to comment Share on other sites More sharing options...
shadowsniper3006 Posted January 17, 2006 Report Share Posted January 17, 2006 Check both TPSs. There is a nasty code in the PCM where if TPS1 doesn't match TPS2, it slams the TB closed and disables the TB until you reset the code. so both "f" and "g" have to match in voltage...what voltage should they be, and what if they don't match? Brad Quote Link to comment Share on other sites More sharing options...
FuelSlut Posted January 17, 2006 Report Share Posted January 17, 2006 so down to brass tacks.. if you REALLY REALLY want to put a 90 mm LS2 TB on our trcusk you would need the following: 2003 Escallade TAC module, 2003 Accelerator Pedal ASM., obviously an LS-2 Throttle Body & aboot $200 worth of connectors... being that the later model TAC modules have a detection for a short between the ref. circuits.... (the only reason i say escallade is because its kinda hard to find parts/rare 03 trucks with TAC...) Thus making this swap an estimated $1,200.00 ???? correct me if im wrong, im just a "young gun" anyhow... but i was taking some time on GM service information this morning and this is what i have concluded.... any help, any... would be greatly aprecieated thanks in adv. George Quote Link to comment Share on other sites More sharing options...
FuelSlut Posted January 17, 2006 Report Share Posted January 17, 2006 ok... its still pretty early today... i may or may not have meant 2002 not 2003... im tired... give me a break Quote Link to comment Share on other sites More sharing options...
BigTex Posted January 20, 2006 Report Share Posted January 20, 2006 so both "f" and "g" have to match in voltage...what voltage should they be, and what if they don't match? They aren't supposed to be identical voltages between sensors, but they are supposed to be very similar readings. Those sensors read the angle of the throttle blade. If the blade is at 75%, the sensors would output a certain voltage. If the blade is at 25%, the sensors would output a completely different voltage. The readings of the blade angles are compared to the reading of how far the pedal is depressed. Those readings should also be close to one another, but not necessarily identical. If they don't match, the PCM detects and error and puts your truck in reduced power mode until you fix the issue and clear the code. Quote Link to comment Share on other sites More sharing options...
TurbochargedBerserker Posted January 27, 2006 Author Report Share Posted January 27, 2006 FYI: http://www.performancetrucks.net/forums/sh...698#post3268698 Quote Link to comment Share on other sites More sharing options...
David k Smith Posted February 29, 2020 Report Share Posted February 29, 2020 What color is the ground wire for the problem code reduce engine power. Done replace foot pedal sensor then the wire's on the throttle sensor and the throttle it self Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.