Question about 1994 Toyota Camry
Location of the solenoids 1 & 2
These are inside the trans case, just above the trans pan, which must be removed. They are fitted as a pair as they use the one wiring plug. Yuo may as well change the filter in there at the same time.
Posted on Nov 20, 2013
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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
There is a technical service bulletin to correct this condition. Replacement of the car's Electronic Control Unit (the computer) will cure this. Take it to a Toyota dealer and have them replace it for free.
Posted on Jun 09, 2009
Drain trans. fluid remove the trans. pan to expose the shift solenoids next to the valve body call the dealer to identify which solenoid is the primary and secondary sometimes there is only one but if you see two identify which one to replace.
Posted on Jul 14, 2009
Before you start looking at replacing solenoids, here is something that you need to know:
Toyota has a technical service bulletin regarding this issue.
Changing the solenoids will NOT rectify your situation. Replacing the ECU in the car is what you need to do. The logic/programming is the problem, not the solenoids.
The good news is this: The ECU is covered, under the factory warranty! It will be replaced for free, if your car has less than 80,000 miles on it.
If you have more miles than 80K, call the Toyota Customer Experience Center at 800-331-4331; an analyst may be able to help offset your costs; they do this quite frequently.
This should get you fixed up. Thanks for visiting FixYa!
Posted on Dec 08, 2009
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