Question about 1993 Toyota Camry
A/T tranny issues. (solenoid )
my auto tranny is slipping in call gears. forward and reverse?
there are no guessing, just tests.
check all fuses.
check AFT levels using the operators guide, (dont guess at ways, do it right way, as 99% dont)
so DRIVE is stuck in 1st gear, or 2nd?
the connect the jumper for the TCM, and get the flash codes.
if it says VSS is dead, then it is.
why wonder this. the TCm will not lie, it will see any bad VSS signals and report them on all cars made. but has flash codes this year.
there are 3 or 4 paths here
1; inputs to TCM wrong, sure it will shift wrong. how could it not.
2: TCM bad , it has good inputs and its outputs are wrong.
3: the TCM to tranny connections are bad, (corrosion)
4: the Solenoids have the correct inputs but fail to work.
bad solenoids or far far worse.
note the order here.. only this works unless guessing with $1500 fist of dollars is ok.
the FSM covers each tests. from 1 to 4.
for on car tests. if the solenoid tests pass its a bad tranny.
Posted on Feb 12, 2014
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Posted on Jan 02, 2017
SOURCE: Hello, I own a 93
The transmission is controlled by the Transmission Control Unit (TCU).
Throttle position, rpm, and speed are input parameters to the TCU. The TCU has a default set of shift patterns. These shift patterns change over time based on your specific vehicle setup and driving habbits.
The shift patterns are only slightly affected by driving habbits over many driving cycles. But, changing the relationship between the throttle position and the actual speed being reported by the speed sensor can have an immediate effect on shift patterns.
While your speedo may now be correct, the realtionship between rpm and thottle position has not been corrected. That would take a gear change in the differentials.
The TCU can be reset to an inital learn base line. When this is done, the TCU will instantly learn the dynamics of your setup.
Any shop with an advanced ODB scan tool can reset the the TCU. The dealer or a transmission shop would be preferable.
You really should change your differential gears as opposed to resetting the TCU
This information was posted by ftgiles here
Posted on Jan 06, 2009
the FSM covers this.
simple voltmeter checks.
first is to scan the TCM. that too in the FSM book.
or at alldata.com ,log in. and see.
1996 is transitional year,
in that CPM scans get the TCM errors. or not.
if not, then the TCM has its own blinking light codes, that too is in the FSM. (can vary by year, and submodel of camry and engine size.)
Posted on Feb 09, 2014
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