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...transmission problems you can diagnose. But maybe you could use some help diagnosing torque converter clutch (TCC) problems. There are plenty of things you can do and learn to make yourself more comfortable with this diagnosis.
Electronics Pave the Way
Before electronics were a part of the automatic transmission, we weren't scared to replace an external seal or change the filter. If there were any problems beyond leaks, maintenance or common adjustments, the transmission was pulled and rebuilt, usually by a transmission specialist.
The automotive repair field has taken two different paths since electronics have been integrated into transmissions. Most of us will diagnose and replace a few external electronics, like speed sensors and transmission position sensors. But this is where the road splits.
If the transmission appears to be at fault, most techs will check the fluid level and condition, look at or the filter, check for any transmission-codes and see if there are any external issues that can be repaired. If they aren't able to find any problems they want to tackle, they may pull the transmission to get rebuilt, just like techs did before.
[FIGURE 1 OMITTED]
But now if you think it's an internal or external electrical issue, you may send your customer elsewhere to have it diagnosed just to protect yourself and your customer from a misdiagnosis. The worst-case scenario would be if you rebuilt a transmission and got it reinstalled, only to find the original problem still present.
Techs who are electronically fluent might find out that many transmission problems can be fixed using skills and tools they use every day to diagnose other electronics and electrical systems problems....
NOTE: All illustrations and photos
have been removed from this article.
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