I have faced ASM configuration assistant failed while install grid on linux with very less RAM. So I crosschecked the log file, It shows below issues
ora–0845: memory_target not supported on this system
So I skip this activity and then started next activity progress is finished. The grid infrastructure installation was successful. After that, I tried to configure asm configuration using by asmca. Here I changed Memory_target parameter to Zero value in init file. Then ASM configuration was successful and asm instance status is started.