DTC 3

DTC 3: Lower FET Stuck ON
1. Disconnect EPS control unit connector A (2P) and the motor 2P connector.





2. Check for continuity between EPS control unit connector A (2P) terminal No. 2 and motor 2P connector terminal No. 2.
Is there continuity?
YES- Go to step 3.
NO- Repair open in the wire between EPS control unit and motor.





3. Check for continuity between EPS control unit connector A (2P) terminal No. 1 and motor 2P connector terminal No. 1.
Is there continuity?
YES- Go to step 4.
NO- Repair open in the wire between EPS control unit and motor.





4. Check for continuity between EPS control unit connector A (2P) terminals No. 2 and No. 1.
Is there continuity?
YES- Repair short in the wire between the EPS control unit terminals A1 and A2.
NO- Check for loose terminals and poor connections at the motor and the EPS control unit. If necessary, substitute a known-good EPS control unit and recheck.