I have no power but the battery is good. Fuses are all fine and terminals are clean.

Possible bad ignition switch. Check wire going to starter for 12 voltage

Check your main or maxi fuses. If an older car, there may be fusible links between the battery and the power distribution. There should be ignition fuses that supply power to the ignition switch. These fuses would be hot at all times, so take a test light, ground it to battery negative, and check if the fuses have power to them. Pull one fuse out, touch the tester probe into both terminals the fuse plugs into. If one terminal lights up the test light, then that fuse is getting power. If the fuse is good, power will pass on to whatever is on that circuit. If it's an ignition fuse, the ignition switch should have power to it (if the wiring is good), and turning the key to on, should send power out to the dash and to the engine.

Be systematic-follow the power from the battery to the fuse/relay box to the ignition switch. Don't forget the importance of ground in any circuit: if a circuit doesn't work, check power and ground. Check your battery ground for a clean, tight connection, from battery negative post to frame ground.

Hi indigo you can remove the blue anti corrosion spray by removing the terminal and scrubing it with a wire brush also the hiaces have a main fuse in what looks like a white box attached to the positive wire close the battery that has fuses that look like strips of metal that if they are broken the power is cut to the vehicle. It usually takes a short circuit to blow the fuse but i have seen a few blow out of the blue.
Good luck i hope this helps

do you mean , no crank or no start? I'll guess at cranks ok , no start.
you stated, Ign. term is dead, that is not the Suzuki name.
my guess is this car is a 16valve MPI 1.6L Suzuki, G16B
and this car is EFI.
and this car has 3 power fuses for the ECU, 3.
IG-coil
FI
dome.
if IG-fuse is above the right knee, replace that.
use a volt meter on both pins if fuse, see 12v, key on>?
I guess the CEL lamp dont glow key on, showing a DEAD ECU?
The Cel must glow, if not, its burned out,or ECU has no power. etc.
ever possible no start is here.
http://www.fixkick.com/nostart.html

try disconnecting the battery for a few seconds and reconnect may work. this way you will reset the system

Outkastroost, I had the same problem last year with my '03 Durango. It happened shortly after we installed a new stereo. The solution was to disconnect the negative battery terminal for about 30 seconds to reset the computer. It's been working fine for a year now after that. I hope this works for you, too.

If the wrench contected the two posts it could have shorted out the battery. Before buying a new one try taking the terminals off and cleaning them. Sometimes the sudden draw of current will break contact in a dirty terminal.

Use a wire brush to clean the battery terminals and the inside of the battery cables where they connect to the battery terminals. If that doesn't fix it, I suspect the problem is the negative connection from your battery to the car body/engine block. Follow the thick cable from the negative terminal of the battery to where it connects to engine block. Make sure you have a good clean metal to metal contact. Use an ohm meter to check to make sure this cable and connection is good. If the connection to the engine block is bad the hood light might still be able to work if it has a separate connection to the negative battery terminal.

clean the battery terminals with a wire brush and tighten the connections up snug

the main terminal is a heavy red wire attached to the fuse block it should be clean and tight. also you can hook a test light from the battery neg. to the terminal it should light. if it doesn't light you could have a bad engine ground (primary ground). or a poor connection tot he main fuse block terminal previously mentioned