Originally Posted by willwren
Massive slip will set an SES.
Massive overtemp of the trans will put the car in limp mode.
OBD1 has very little control over ABS. Almost no involvement. It'* nearly a standalone system. If it'* not a WSS, it'* either the EBCM (rarely) or the PMV (much more likely).
By saying "limp home" mode, are you referring to the PCM turning off the traction control only, or are other measures taken along with that?
When I was trying to diagnose my problem, here is how I narrowed it down. Keep in mind I already established the fact that the traction off command would be given once the vehicle was in motion:
1)Start vehicle. Go to first gear and leave it there, drive up to 30 mph. Traction light did not illuminate. This told me that the WSS'* were doing their job. Then again, the ABS light *should* have popped on if it was a WSS.
2)Same as above, but go to second to let it shift. Once it got to the 1-2 threshold, I noticed the slip, and about that time was when the traction off lamp came on.
I knew it wasn't an overtemp condition because I ran a test prior to this one with the vehicle COLD. Lamp came on within 10 seconds of intial startup and gear selection. And mine did not throw on the SES lamp whenever traction was turned off via PCM, though I think it DID store a code.
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
2006 Chevy Malibu Maxx LTZ - Custom 2.25" manifold-back exhaust w/FM-80. Probably the only Maxx with this system.