I have a 97 Mitsubishi Galant which was on, and then just cut off. It now will try to crank but won't turn over... We have tried... putting gas in it, changing spark plugs and distributor cap, checking the gas to see if it was going through the lines, watching the spark plugs spark, listening for the fuel pump to turn on (think it does) , checked battery (GOOD)... PLEASE HELP... had it towed to a shop and they told me it was an electrical problem?? Maybe the ECU? But mechenic told me if the fuel pump turned on then it was not the ECU?? He said maybe ASD circuit - what's that?? PLEASE HELP ME - what else can I try - On a budget... :( and if it is the ECU can I get one off another car? Same year and model or just any? Do I have to program it? HELP HELP

. Check Engine Light (CEL) Test. Does the CEL come on and then go off, when the ignition switch is turned to ON?

. Test all under hood and under dash fuses with a test light or multi-meter:

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. Code Test. Attach a code reader or scan tool to the Data Link Connector, located under the dash.

. Spark Test. Perform the standard spark test. Remember, it's possible to have spark but the engine is not firing at the right time. The Crankshaft Position Sensor is often the culprit. Their physical location often subjects them to the elements.

. Fuel Test. Can you hear the fuel pump, located in the gas tank, come on for two seconds, when the ignition switch is turned to ON?

. ECU Test. Remove the MAP Sensor connector and turn the ignition switch to ON (not start). Using a multi-meter, check for 5 volts going between the MAP Sensor connector's reference wire (+) and ground. As you look at the connector, this is the socket on the right. Really press the black test lead into a cleaned ground on the engine. If the voltage is low, it's probably indicating ECU failure. Most failed ECUs will record a fraction of a volt.

If the ECU records a fraction of a volt, disconnect the negative battery terminal and remove the ECU. Buy an exact part number match to the part number on the ECU. Check for remanufactured ECUs at auto parts stores, Ebay, salvage, and online. Shop for price and warranty, if possible.

Be sure to locate and clean the main ECU ground. If the gas tank was almost empty, add more than a few gallons of gas. Then, turn the ignition switch to ON. The fuel pump should run and pressurize the fuel rail. Repeat this several more times, to ensure the fuel pressure is sufficient for the injectors to work.

The galant ecu is faulty and probably needs a reset or engine computer diagnosis Refer to this galant site
galant ecu they provide codes and repair options.