(2) Heat resistance vibration Under the conditions specified in 2.3.8 Heat resistance test or in 4.2 (1), conduct 2.3.3 Vibration resistance test or humidity resistance test. (3) Muddy water immersion power-on cycle At every 100 cycles as defined in 2.3.5 Current resistance cycle, immerse the connector in muddy water (specified below) and conduct 1,000 cycles of the test. Muddy water = 15g NaCl and 10g of Kanto load mud added to 100g of water (4) Stress corrosion crack test Copper alloy : Gaseous phase with an ammonia water content of 12.5% or more Stainless steel : 42% MgCl2 B.P 143C immersed (JIS G0576)