Quote:
Originally Posted by Oldmactech
Ok, got to the heart of the matter. I pulled the engine electronics fuse carrier ( underneath the right side windshield wiper and in a box with the TCM and the ECM). The 30A fuse in slot four was burnt.
Fuse 4 is Automatic transmission control module (AGS) (A7000)
And the oxygen sensors heaters. (I got getting an Oxygen sensor code also so that is confirming.
Replaced the fuse…..no joy. I’m going to recheck it but on first check after startup, the fuse was good. Have drive 10 miles since so worth a check. (Drive reasonably normally)
Does this indicate a bad TCM or something short in the trans? Or something else entirely?
One other symptom. On startup the P of PRND is brightly lit but shortly goes to dim as the other 3 letters.
Thanks.
Sent from my iPad using Tapatalk
|
Fuses blow from a short or power surge to keep the system from frying. If you replaced the fuse but still have the same errors then possibly tcm damaged, but I would check all related wiring first. If there's still a short somewhere you'll pop that fuse again. But if the wires burnt through you'll have an open circuit and no power to the tcm... if it's the tcm harness. If it's the o2 harness you'll just get an open in the o2 circuit.
Is the tranny shifting though? My tranny lights are dim too, but I've got full function. Sport and manual mode works just fine.