Most of the cases, it will difficult to find where the table or column or procedure is used any where in the Procedures in the database; Below quires will help to search through the data base and find the table or procedure the keywords are used
SELECT j.Name, s.Database_name, s.Command
FROM msdb.dbo.sysjobsteps s
INNER JOIN msdb.dbo.sysjobs j
ON s.job_id = j.job_id
WHERE s.command LIKE '%TableName%'
AND s.database_name LIKE '%DBName%'
Below query will help to check the table is used any where in SQL Job
SELECT DISTINCT so.Name
FROM syscomments sc
INNER JOIN sysobjects so ON sc.id=so.id
WHERE sc.TEXT LIKE '%OBTN%'