IS THERE ANY ONE CAN TELL WHAT IS HAPPENING TO MY CAR , I STARTED UP AND THE CAR STARTED TO DIE, YOU CAN'T GIVE IT ANY GAS OR IT AUTOMATIC DIED.

 

I had the same problem. Mine turned out to be a fuel pump ecu. It's located on the back bulkhead behind the seat back. You can find them for about $50 used.

 

hopefully he sees this..its been a while.

 

hope you check this today..where is the fuel pump ecu located on you SC400

 

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What is needed for an engine to start?
1. The engine must be turned over by the starter motor with enough speed to catch. For this to happen,the battery must have enough charge,the starter motor and the starter circuit should be OK.
2. Fuel mixed with air in the correct proportion must be supplied to the enigne cylinders;
3. Spark - there must be a strong spark at the proper moment to fire the air/fuel mixture.
4. Proper timing - the engine valves should open and close in appropriate time.
5. Compression - normal compression in the cylinders is 120 - 170 psi.The engine won't start if the compression is lower than 70 - 80 psi.

If the engine won't start, one of these things is probably missing.

 

I have the same problem with my LS400 please let me know what you find out