failsafe??

repsol · 06-20-2009, 11:48 AM

so i was looking for anyone that knows any thing about failsafe mode on a first gen eclipse auto. the dam car is stuck in 3ed gear, has park and reverse.

Backmarker · 06-20-2009, 12:15 PM

The failsafe or limp home mode on automatic transmission is when no electrical power is going to the A or B shift solenoids. This ca be caused by anything from a fuse or relay ( check you under hood fuse block) to a faulty transmission module (I think that is located under the center console toward the front). Start simple and check all your fuses and relays, then check the electrical connector at the trans and last would be you transmission module. Also be sure to check your grounds and if any aftermarket items have been added.
Hopes this helps

Rick

loopy · 06-20-2009, 11:52 PM

rick knows his stuff

repsol · 06-21-2009, 11:31 AM

i think i tested all of the plugs and im geting power out of the tcm. alldata, says failsafe is electrical.

repsol · 06-21-2009, 11:31 AM

i know you said electrial.

repsol · 06-21-2009, 11:32 AM

o ya the only transmission fuse i found is good and there is power going to the fuse

Backmarker · 06-21-2009, 11:16 PM

Is your check engine light on and if so are you able to scan it for DTC's, this may help in trouble shooting. You said that the power ckts are ok, but how are the grounds. Also the shift solenoids have power supplied at all times and are controled by the ground side of the ckt by the TCM (the same way fuel injectors are controled). Grounds are a little more difficult to trouble shoot. Your TCM may have gone bad since it is unlikely that both shift solenoids have gone bad at the same time and you stated that all the power ckts are good. But before you go and spend a couple hundred on a new TCM double check the ground control ckts from the TCM to the shift solenoids.

Rick

repsol · 06-22-2009, 05:42 AM

no codes were found when scaned, the engine light pops up for a min then goes away. going to check the ground. thanks

e11charlie · 06-22-2009, 08:41 AM

Hey I have a transmission book you should take a look at. Got it from when I took classes up in AK. It is very helpful if you want to borrow it you can.

repsol · 06-22-2009, 08:37 PM

na i got alldata.com, im just going to buy a T.C.M. any one know of any 91 eclipse auto siting around? lol

06-20-2009, 11:48 AM	#1
repsol Member Joined: Mar 2009 From: boise Posts: 42	failsafe?? so i was looking for anyone that knows any thing about failsafe mode on a first gen eclipse auto. the dam car is stuck in 3ed gear, has park and reverse.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

06-20-2009, 12:15 PM	#2
Backmarker Junior Member Joined: May 2007 From: Meridian Posts: 14 I Ride: GSXR 750	The failsafe or limp home mode on automatic transmission is when no electrical power is going to the A or B shift solenoids. This ca be caused by anything from a fuse or relay ( check you under hood fuse block) to a faulty transmission module (I think that is located under the center console toward the front). Start simple and check all your fuses and relays, then check the electrical connector at the trans and last would be you transmission module. Also be sure to check your grounds and if any aftermarket items have been added. Hopes this helps Rick

06-20-2009, 11:52 PM	#3
loopy Senior Member Joined: Dec 2007 From: nampa Posts: 1,094 I Ride: 07 cbr 600rr	rick knows his stuff

06-21-2009, 11:31 AM	#4
repsol Member Joined: Mar 2009 From: boise Posts: 42	i think i tested all of the plugs and im geting power out of the tcm. alldata, says failsafe is electrical.

06-21-2009, 11:32 AM	#6
repsol Member Joined: Mar 2009 From: boise Posts: 42	o ya the only transmission fuse i found is good and there is power going to the fuse

06-21-2009, 11:16 PM	#7
Backmarker Junior Member Joined: May 2007 From: Meridian Posts: 14 I Ride: GSXR 750	Is your check engine light on and if so are you able to scan it for DTC's, this may help in trouble shooting. You said that the power ckts are ok, but how are the grounds. Also the shift solenoids have power supplied at all times and are controled by the ground side of the ckt by the TCM (the same way fuel injectors are controled). Grounds are a little more difficult to trouble shoot. Your TCM may have gone bad since it is unlikely that both shift solenoids have gone bad at the same time and you stated that all the power ckts are good. But before you go and spend a couple hundred on a new TCM double check the ground control ckts from the TCM to the shift solenoids. Rick

06-22-2009, 05:42 AM	#8
repsol Member Joined: Mar 2009 From: boise Posts: 42	no codes were found when scaned, the engine light pops up for a min then goes away. going to check the ground. thanks

06-22-2009, 08:41 AM	#9
e11charlie Senior Member Joined: May 2009 From: no where Posts: 2,629	Hey I have a transmission book you should take a look at. Got it from when I took classes up in AK. It is very helpful if you want to borrow it you can.

06-22-2009, 08:37 PM	#10
repsol Member Joined: Mar 2009 From: boise Posts: 42	na i got alldata.com, im just going to buy a T.C.M. any one know of any 91 eclipse auto siting around? lol