Dtc1525f3 Renault Megane 3 [patched]

Renault wiring can be brittle.

Disconnect the brake switch connector. With the ignition on, you should have a 12V reference on one pin (check wiring diagram for your specific year). There should be a ground and a signal wire back to the ECU. Probe the signal wire – voltage should toggle when the pedal is pressed. dtc1525f3 renault megane 3