Apr 01, 2009
- The fact that car was working 12 hours ago does mean nothing. Car faults do not warn you before coming.
The fact that you assumed that the problem can fixed at user level, by plugging or unplugging a wire, does not necessarily mean that the problem is repairable at user level.
Usually it is not like that.
In the best case the problem is the anti theft system, in that case try using the key fob to unlock, if it does not work you call the car dealer and arrange key fob re-programming.
Also ignition problems can cause the same, and they do not warn you before failing.
To test ignition and ignition switch you need to take apart the steering column and use a tester, that is not a job that can be done by everybody.
Accessing the Ignition coil is easier, on a Camry you need to remove the cover on top of the cylinder heads by undoing two bolts.
To test ignition coil there is need to read the impedance on coil using an ohmeter.
After accessing the coil the tester must read betwen 130 and 210 ohms.
Here is the coil
Ignition Coil 1992-1993 Toyota Camry
Here is procedure to replace the coil
If you are not able to identify head cover coils and parts, that means that you should not attempt doing it by yourself.
Get the service manual for your engine , and do not remove any part without following detailed instructions. See:
Toyota Automotive Repair Manuals - A Do It Youself (DIY) Manual.Apart ignition and Anti theft related problems , there are many more problems that can prevent car from starting.
Many problems can be spotted by connecting a code reader to car computer module, here is a basic code reader:
OBD I and II Actron code readers or
Code Buddy CAN OBD II Code Reader.
Also fuel pressure and vacuum must be tested, a line can get clogged or pump can fail without warning you. Here is the tool
Lisle 20300 VACUUM GAGE/FUEL PUMP TEST.
Fuel injection can also be responsible, here a complete test kit:
Fuel Injection and Fuel Pump Tools : Tool Aid.
Finally, compression should be tested to reveal engine internal problem, here is the kit.
Motion Pro Compression Test ToolThe alternative is going to a qualified mechanic and have all the steps above performed by a competent person with the tools already in there.
Note : from description looks like ignition/distribution problem the most common Alarm and ignition coil, that is the reason why I started with those parts.