Hey guys,

my eco mode stoped working a few weeks ago,

i dug up a diagram and found that the eco switch just sends a 12v current from the fuse panel into the TCM to signal eco on,

i ran a 12v line from the light circuit and ran into pin 4 of the tcm and it worked great......for a day now trans is in limp mode and eco light no longer on dash

any help would be great

Try a reset ecu?