First you'll have to tell me which model of honda city you have. Assuming you are from india and own a honda city ZX, all I can guess is that the guy who tempered the ODO meter reading for you has messed up some diodes inside the cluster.
All of your central locking controls, immobilizer, abs readings, cabin light, call back indicator functions depend directly upon the instrument cluster.
When the guy attempted to remove the chip and replace it, he must have damaged some connections. Try checking all the fuses and grips.
One thing more, you have two grips plugged into the cluster, check both of them thoroughly, you can suspect some wires becoming loose and not making adequate connection with the cluster pins.