DTC Troubleshooting: 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 3.


NO - Repair open in the wire between  EPS control unit and motor.n


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 4.


NO - Repair open in the wire between  EPS control unit and motor.n

4.Check for continuity between EPS control unit connector A (2P) terminals No. 2 and No. 1.

Is there continuity?


YES - Repair short between RED and GRN wires for the EPS motor circuit.n


NO - Check for loose wires or poor connections at the EPS control unit and motor connections. If necessary, substitute a known-good EPS control unit and recheck.n