The ignition lock cylinder in your Honda Civic is very important because without it, you would have no way to engage the ignition switch. The key for your Honda Civic goes into the cylinder lock but over time, the lock can wear out and you will notice it becoming harder to turn the key in the lock cylinder. If this happens, you must replace the lock cylinder with a new one.
Disconnect the negative battery terminal from the Civic's battery with a wrench.
Lower the steering shaft to its lowest position and remove the screws that secure the steering shaft cover with a screwdriver. Remove the cover from the shaft.
Disconnect the wiring harness from the ignition switch located on the right side of the column. Remove the four screws that secure the switch to the steering shaft with a screwdriver and remove the switch.
Disconnect the wiring harness fro the immobiliser control unit located on the back of the lock cylinder.
Drill a hole in the top of the sheer bolts that secure the lock cylinder to the steering shaft with a drill bit. Remove the bolts using a bolt extractor.
Place the new lock cylinder into the steering shaft and secure it using the bolts supplied with the replacement lock. These bolt have a hex head on them. Use a wrench to secure the bolts.
Plug the wiring harness into the immobiliser control unit located on the back of the lock cylinder.
Secure the ignition switch onto the steering shaft with the four screws and the screwdriver. Plug the wiring harness back into the switch.
Place the steering shaft cover onto the steering shaft and secure it with the screws and screwdriver.
Reconnect the negative battery cable to the battery terminal with a wrench.