STEP 2. Check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position.
Is DTC U0417 set?
Replace the electric parking brake ECU (Refer to GROUP 36 - Electric Parking Brake ECU ) and then go to Step 3. The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).