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In this tech article I will explain what it means when FAIL SAFE is displayed via your instrument cluster.
I will also give you some tips on diagnosing transmission faults, mechanical and electrical.
Depending upon application, the transmission will shift into 3rd or 4th gear on a four speed, and 4th or 5th gear on a five speed.
For example the A5S360R transmission will go into 5th gear when there is a mechanical malfunction and 4th when there is a power failure to the TCM, (this is a key note to remember when diagnosing).
The TCM will interpret the difference in wheel speed signals as being a turn and suppress (or delay) upshifts. Be sure to check the transmission fluid level and condition. Noises and vibrations require a good visual inspection. Check the driveshaft, drive axles, center bearing and driveshaft flex-disc.
Also check the lateral alignment of the driveshaft.
Remember when working with electronic control modules, always disconnect the battery before unplugging or plugging one in and do not expose them to static electricity.On 10/30/2013 Clay Dewitt Brunson Along with Lucas Williams and an unknown black male were at a house on North Street with the victim and Brunson and the victim got into an argument which resulted in the victim being severely beaten by the suspects and th Reach Out and Read-Alabama pediatric practices and clinics are ready to Read Together and Be Prepared this summer with Norman Birdwells Clifford and The Big Storm.Reach Out and Read- Alabama launches its fourth-annual summer campaign, targeted at encour Miss Houston Co./Greater Dothan Woodlands Pageant E-mail: [email protected] up with us on Facebook @ Houston County.What this means for you if you have a FAIL SAFE message (indicating the transmission has entered the emergency program) is that the trans ECU has been adapting the transmission to maintain a normal feel up to the point where it could no longer adapt and reached a fault limit.Once a fault limit is met, the trans ECU puts the trans in FAIL SAFE or limp mode.