I copied this from the www.automotiveforums.com on the P0773 problem, but I do not think that the solenoid problem it calls out could cause the car not to start. Have you taken it to a auto parts store and had them read the codes for you. It is usually free and they will explain them also.
Background (from the FAQ thread):
Solenoid E (SL) is the
torque converter lock-up solenoid. If the torque converter is a little slow
locking up, it will set a P0700 code.
The ECM compares engagement condition of TCC with lock-up
schedule in memory to detect MECHANICAL trouble of lock-up solenoid, valve body
and torque converter. (The P0773 trouble code is probably from monitoring
electical signal to the solenoid. Might be worth checking the electical
connection and wiring before you replace the solenoid) A P0700 trouble code is
set when TCC lock-up does not occur during appropriate speed, or lock-up does
not release at appropriate speed.
There
are simple electrical tests to check the solenoid and plunger but the
transmission pan must be removed to gain access.
A Toyota
service tech can check the system without pan removal with his analyzer.
Keep an eye on the rpms when you are above
50 mph. They should be constant at constant speed, like in a manual transmission
since the torque converter is supposed to be locked up above this speed. If the
torque converter is not locked, then your mileage will suffer, and your tranny
fluid will heat up above normal temperature. If you use synthetic fluid, you
will minimize the problems from overheating the fluid. The life of the fluid
will be shortened in any case if the torque converter doesn't lock up and you
drive at expressway speeds, particularly in hilly country.
Car
not starting or turning over indicates towards multiple possibilities. It can
be issue with battery or weak battery. But if battery checks out ok, then it
can be starter issue or faulty alternator or problem with low fuel pressure or
no spark at spark plugs due to dirty spark plugs or faulty ignition
coil or injectors getting cracked or dirty and needs to be cleaned.
To
confirm the problem, the basic troubleshooting is required.
Click
this link below and follow the troubleshooting:------
http://technoanswers.blogspot.in/2012/02/car-starting-issues.html
---------
For OBD code problems check the list of help links below. Click the link below to go through its procedure.--------------Diagnostic Code P2195?http://schematicsdiagram.blogspot.in/2012/02/diagnostic-code-p2195-on-toyota-avalon.html--------------Diagnostic code P1330?http://technoanswers.blogspot.in/2012/02/diagnostic-code-p1330-on-kia-2wd.html------------Diagnostic code P0700, P1330, P1121?http://technoanswers.blogspot.in/2012/02/diagnostic-code-p0700-p1330-p1121-on.html-------------shows error code P1330?http://technoanswers.blogspot.in/2012/02/2003-kia-sorento-shows-error-code-p1330.html--------OBD code P1330?http://technoanswers.blogspot.in/2012/02/obd-code-p1330-on-2003-kia-sorento.html------------OBD code P01300?http://technoanswers.blogspot.in/2012/02/obd-code-p01300-on-toyota-rav4.html--------------OBD code P0768?http://repairhelpcenter.blogspot.com/2012/01/obd-code-p0768.html------------Evaporative Emissions System codes details?http://schematicsdiagram.blogspot.com/2011/11/evaporative-emissions-system-codes.html--------------- Engine Misfire codes?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
----------------
Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
--------------
ABS trouble codes for all models?
http://repairhelpcenter.blogspot.com/2011/11/abs-trouble-codes-for-all-1994-00-acura.html
------------
Diagnostic code P0010?http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0010.html-------------Diagnostic Code P1396?
http://howtobyme.blogspot.com/2011/11/diagnostic-code-p1396.html
--------------
Code P0452?
http://howtobyme.blogspot.com/2011/11/code-p0452.html
-------------
OBD code P0172 on Buick?
http://howtobyme.blogspot.com/2011/11/obd-code-p0172-on-buick-park-avenue.html
-------------
DTC Code P0321?
http://howtobyme.blogspot.com/2011/11/dtc-code-p0321-on-buick-park-avenue.html
------------------
Error Code P0471?
http://howtobyme.blogspot.com/2011/11/error-code-p0471-on-2007-dodge-ram-3500.html
-------------
P0304 Error code?
http://howtobyme.blogspot.com/2011/11/p0304-error-code-on-dodge-neon.html
-----------------
OBDII scan is receiving NO BUS CODE?
http://howtobyme.blogspot.com/2011/11/obdii-scan-is-receiving-no-bus-code.html
-----------
How to Clear OBD error Codes?
http://repairhelpcenter.blogspot.com/2011/11/how-to-clear-obd-error-codes-on-acura.html
----------------
Diagnosis and Testing Car Components?
http://vwrepairhelp.blogspot.com/2011/11/diagnosis-and-testing-car-components.html
--------------
Diagnostic Trouble Codes list?
Part 1.
http://repairhelpcenter.blogspot.com/2011/11/diagnostic-trouble-codes-list-for-acura_18.html
--------------
Diagnostic Trouble Codes list?
Part 2.------
http://repairhelpcenter.blogspot.com/2011/11/diagnostic-trouble-codes-list-for-acura.html
------------
OBD Code is cleared but check engine light will not RESET?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-is-cleared-but-check-engine.html
--------------
Diagnostic Code 43 and 71?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-43-and-71-on-1991.html
------------------
Code P0132?
http://schematicsdiagram.blogspot.com/2011/12/code-p0132-on-acura-tl.html
-------------
P0031 code?
http://schematicsdiagram.blogspot.com/2011/12/p0031-code-on-dodge-dakota.html
--------------
How to get diagnostic Code without OBD Scanner on Pre 1995 cars?
http://schematicsdiagram.blogspot.com/2011/12/how-to-get-diagnostic-code-without-obd.html
------------
OBD-II Trouble Code P0300?
http://schematicsdiagram.blogspot.com/2011/12/obd-ii-trouble-code-p0300.html
-------------
Getting diagnostic code P0016?
http://schematicsdiagram.blogspot.com/2011/12/getting-diagnostic-code-p0016.html
--------------
How to Read Codes from Check Engine Light?
http://schematicsdiagram.blogspot.com/2011/12/how-to-read-codes-from-check-engine.html
-------------
Diagnostic Code P0540 continues to return and the MIL light is on?
http://schematicsdiagram.blogspot.com/2011/12/diagnostic-code-p0540-continue-to.html
-----------
DTC Trouble Code P0401?
http://schematicsdiagram.blogspot.com/2012/01/dtc-trouble-code-p0401.html
-----------------
Car misfires and error code P0306 and P0303 is shown?
http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
-------------
Diagnostic code P0463?
http://technoanswers.blogspot.com/2012/01/diagnostic-code-p0463-on-ford-f250.html
-------------
Check engine light with codes P2195 and P2197?
http://howtobyme.blogspot.in/2012/01/check-engine-light-with-codes-p2195-and.html
------------
Diagnostic error code P0121,P0505,P1000,P2101,P2104, P2110,P2135,P2106?
http://technoanswers.blogspot.in/2012/01/diagnostic-error-code.html
--------------
P0174, P0037 and P2197?
http://technoanswers.blogspot.in/2012/02/p0174-p0037-and-p2197-on-toyota-rav4.html
-----------
P0352 Obd code?
http://technoanswers.blogspot.in/2012/02/p0352-obd-code-on-toyota-rav4.html
-------------
Error code p0402?
http://technoanswers.blogspot.in/2012/02/error-code-p0402-on-ford-escape.html
---------
Obd Code P0763?
http://technoanswers.blogspot.in/2012/02/obd-code-p0763-on-lexus.html
-------
OBD code P0301, P0430 and P0174?
http://schematicsdiagram.blogspot.in/2012/02/obd-code-p0301p0430-and-p0174.html
---------
OBD code P0500?http://schematicsdiagram.blogspot.in/2012/02/obd-code-p0500-on-lexus-rx-300.html
-----------This will help.Thanks.
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