ORA-01078: failure in processing system parameters
ORA-29701: unable to connect to Cluster Synchronization Service

The way I overcame this problem was through oracle UNIX logging. Just go to directory $ORACLE_HOME/grid/bin and run the following crs command:

db02:+ASM:/u01/app/oracle/product/11.2.0/grid/bin $crsctl start resource -all
CRS-5702: Resource 'ora.LISTENER1.lsnr' is already running on 'va-idevdb02'
CRS-2672: Attempting to start 'ora.cssd' on 'va-idevdb02'
CRS-2679: Attempting to clean 'ora.diskmon' on 'va-idevdb02'
CRS-2681: Clean of 'ora.diskmon' on 'va-idevdb02' succeeded
CRS-2672: Attempting to start 'ora.diskmon' on 'va-idevdb02'
CRS-2676: Start of 'ora.diskmon' on 'va-idevdb02' succeeded
CRS-2676: Start of 'ora.cssd' on 'va-idevdb02' succeeded
CRS-2672: Attempting to start 'ora.asm' on 'va-idevdb02'
CRS-2676: Start of 'ora.asm' on 'va-idevdb02' succeeded
CRS-2672: Attempting to start 'ora.DEV_DATA.dg' on 'va-idevdb02'
CRS-2676: Start of 'ora.DEV_DATA.dg' on 'va-idevdb02' succeeded
CRS-2672: Attempting to start 'ora.QA_FLASH.dg' on 'va-idevdb02'
CRS-2672: Attempting to start 'ora.stgrptdb.db' on 'va-idevdb02'
CRS-2676: Start of 'ora.QA_FLASH.dg' on 'va-idevdb02' succeeded
CRS-2672: Attempting to start 'ora.txqadb4.db' on 'va-idevdb02'
CRS-2672: Attempting to start 'ora.txqadb3.db' on 'va-idevdb02'
CRS-2676: Start of 'ora.txqadb4.db' on 'va-idevdb02' succeeded
CRS-2676: Start of 'ora.stgrptdb.db' on 'va-idevdb02' succeeded
CRS-2676: Start of 'ora.txqadb3.db' on 'va-idevdb02' succeeded
CRS-4000: Command Start failed, or completed with errors.


Although the last line says 'Command Start failed', it actually works and both the grid and instance are started.

idle> select * from v$asm_diskgroup;