⚙️🚛 Volvo I-Shift TECU Replacement Leak Check 🛠️💨This Volvo I-Shift came in with shifting issues, and the TECU (Transmission Electronic Control Unit) needed replacement.After installing the new component, our tech performed a leak test before final reassembly and discovered a leaking air supply fitting.✅ Catching this issue during testing prevented the truck from going back on the road with a hidden air leak.⚠️ Always test for leaks before reinstall — even new components can have issues.👉 At