Trouble codes may be accessed by installing a spare fuse into the diagnostic switch terminals and turning the ignition switch to the On position. Codes will continue to flash as long as the ignition switch is On, and the spare fuse is installed in the diagnostic connector.
As shown in the chart above, when the diagnostic fuse is inserted, and the Ceheck Engine Light remains "ON" this is a sign of ECM failure. (See diagnostic code chart provided above - it's the 3rd image given above. Click "view fuill image" to get a close up view and you will notice towards the bottom "ON" is ECM failure)
The Engine Control Module, it's like the vehicle's "brain". It's the main computer that runs all the engine controls. It's in the 2nd image provided above. Right above the fuse block.
Oh boy... good question. Due to the age of the vehicle, it may be tough to find! If you can find it, yes, an aftermaket parts store MAY have it.
will it hurt it to drive it till I find one or should I just park it till I find one? Suzuki dealership just put a new moter in it because they forgot to put oil in the moter when I had oil change and it bleww the motor up so their insurance paid for new motor.
Yes. Removing the "NEG" cable should clear the codes. However, in this case, if the ECM is at fault, the problem will be noticed immediately, and the light will return as soon as the fault is noticed.
Now that I think about it- if the Dealer replaced the engine, there very well may be some sort of "compatability" issue between the new engine and the old ECM. Before going crazy trying to find one and paying for it, you may want to ask the Dealer if they can "re-program" the old ECM to accomodate the new(er) engine.
Glad I could help. Have a great day!