How to reset alarm on Honda civic98

Depends on vehicle, some will assume being stolen if battery voltage / amps drop too low and ECU or alarm system disables start / run. This is to prevent alarm being turned off by cutting battery wires. Normally needs a dealer with laptop and software to reset

You're going to have to essentially reinstall the system enough to figure out what's causing the no start issue. Is it a no power at all issue, a no crank issue, or a cranks but won't start problem.?

Alarms can completely cut power off to the key, cut power to the starter, or cut power to the ignition. You need to figure out what this system did. Maybe you can Google it and find out how it works or take it to a car alarm shop and see if they can tell you.

Most likely what has happened is when you removed the alarm you left some wires or removed some wires that ran power through the alarm box and then to whatever it was cutting power off to. Usually the main power to that flows to the key.

Good Luck!

Problem with 1998 Honda Accord 2010 ford edge starts intermittently. Replaced no crank is
1: a weak battery (try different good one, or jumper cable it)
2: bad cables or conn. from battery to starter.
3: bad starter.
4: bad key line (alarm cut, PRNDL switch open, bad ignition switch.
Five minutes with any voltmeter finds this easy.
or or hot wire the starter solenoid, to cut the problem in 1/2
this proves problem is in starter or battery
or in Key line, in 5 min flat, (a 100 year old test )

there are very simple tests for each of the 4. ask.

Thats not a factory alarm that aftermarket. go under the steering column and remove the whole alarm set up. or better yet find a relay that is attach to the starter signal (match the color) and restore how it used to be then you should be able to crank the car , if you sucessfull have bypass the alarm then go ahead and look for its ground and just cut it. The aftermarket cuts into the ignition switch starter signal so that is where you locate the starter relay alarm.

this alarm system is reset with the key being turned in the door, lock and unlock the driverside door and then see if it starts if not then do the same to the pass/side and see if it starts if it doesnt then you may have a bad starter, the best thing to do is check for power at the small wire on the starter if theres power to the small wire with the key in the crank postion and there should be power on small wire if there is then replace the starter, hope this helps.

The alarm had a wire to not let the car turnover/crank, is that what you mean, or the car turnsover/cranks, but wont run. If it wont turnover, usually its a larger wire that was cut and the alarm wired in, you will need to get this wire reconnected again. I dont have a diagram here to tell you the wire color, but usually its a 10-12 gauge wire. So if you have a 2 wires the same color, and its cut, connect them back again.

Try to remove the After Market alarm only. The other might be the FACTORY alarm. Might want to leave the factory one in the vehicle.

you need to check the alarm for default wireing,

ecm more likely

when it wont start does engine crank? do u hear a click, a clunk etc? this will help us provide troubleshooting guide