P1518 PCM to TAC serial data circuit
Thread Starter
Teching In
Joined: Feb 2002
Posts: 26
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From: Long Beach, CA
P1518 PCM to TAC serial data circuit Anybody have any idea what the heck this code is? I so it when I was trying to clear my DTCS..
TIA
<small>[ February 19, 2003, 06:57 PM: Message edited by: YellowZ06 ]</small>
TIA
<small>[ February 19, 2003, 06:57 PM: Message edited by: YellowZ06 ]</small>
TECH Apprentice
Joined: Dec 2001
Posts: 357
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From: Whitby Ont Canada
Re: P1518 PCM to TAC serial data circuit Helms says it is "loss of data or invalid data between the PCM and the Thottle Actuator Control" (TAC). Also says that if the battery voltage has been low or the PCM has been replaced or reflashed you can ignore the code, other then that it goes on with about 12 tests for a short condition between the TAC and the PCM(any TB work that may have caused a short or bad connection lately?). If it is an old DTC I wouldn't be to concerned.
TECH Apprentice
Joined: Dec 2001
Posts: 357
Likes: 0
From: Whitby Ont Canada
Re: P1518 PCM to TAC serial data circuit There is this warning in the LS1prog word document:
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Please note that after reading or reprogramming your PCM, you may get the 'Check Engine' light turned on for the first few miles of driving. This is caused by the read/program causing a hard reset to the PCM (like it was turned on for the very first time). If there are no trouble codes, then this light will go out after you have driven a few miles.
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Please note that after reading or reprogramming your PCM, you may get the 'Check Engine' light turned on for the first few miles of driving. This is caused by the read/program causing a hard reset to the PCM (like it was turned on for the very first time). If there are no trouble codes, then this light will go out after you have driven a few miles.
