During DT check found #3522 A/C 1-1 & #2 ~~~~~ Fault confirmed 3522 A/C #1-1 and 2522 A/C #2-1 having coolant pressure fault. Found with low freon, top up freon on all 2 stated aircon units. Function test all the stated units and no fault triggered. Car was cooling. Conduct soap test at underframe pipings and CCU with no leak identified. Raised Ops20 for (TWD/BSD) to check Evaporator system for freon leak. N.A/azli/faizal/arun/sankar/04.07.22 3522 AC 1-1 To check Evaporator for leak.