Starting from the study of the painting process. And collect the information of the problem. Analyze the problem to find the cause of the problem by Fault Tree Analysis (FTA), then find the real cause for use in the plot.N2 resulting in reduced from the original problem by comparing the average Defect before improvement Per Hundred Unit (DPHU) in 2012 DPHU (K13),1870 DPHU (N17). And after improvement by the real problem with the Fault Tree Analysis (FTA) the decline in 1349 DPHU (K13), 1375 DPHU (N17). As K13 reduced 663 DPHU (32%) the N17 reduced 495 DPHU (26%).