1991 Mitsubishi Eclipse safe mode

MABRAMSON

MEMBER
1991 MITSUBISHI ECLIPSE
4 CYL
FWD
AUTOMATIC
87,000 MILES

I recently replaced the ecm and now my transmission is locked in the "safe mode." How do I remedy this? No problems with the trans prior to ecm replacement.

Tuesday, April 6th, 2010 AT 11:24 AM

3 Replies

KHLOW2008

MECHANIC
41,814 POSTS

Hi mabramson,

Thank you for the donation.

First would be to get the trouble codes. For the trans to enter limp mode, some sensor or their wiring could be faulty.

Is the ECM replaced of the correect typew? Did you check the ECM part no?

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Wednesday, April 7th, 2010 AT 2:42 PM

MABRAMSON

MEMBER
4 POSTS

I have checked the ECM. It is the correct one for the car and when checked for error codes, it reads functioning normally. Transmission is still in failsafe mode. How do I reset the trans so it will shift?

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Saturday, May 22nd, 2010 AT 1:10 PM

KHLOW2008

MECHANIC
41,814 POSTS

Disconnect the battery terminals.
Hold the 2 terminals together for a few seconds and reconect.
Restest to see if the problem is resolved.

If you had disconnected any wire couplers, recheck them for proper seating and looseness.
Recheck the ECM and TCM wire harness.

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Saturday, May 22nd, 2010 AT 6:05 PM