DTC Troubleshooting: 33-02, 33-07

DTC 33-02:  Upper FET Stuck ON (Initial diagnosis)
  
  

1.Clear the DTC using the HDS.

2.Turn the ignition switch OFF.

3.Start the engine.

Does the EPS indicator come on?

YES - Go to 4.

NO - Check for loose terminals or poor connections. If the connections are good, the system is OK at this time.n


4.Verify the DTC.

Is DTC 33-02 or DTC 33-07 indicated?

YES - Go to 5.

NO - Perform the appropriate troubleshooting for the code indicated.n


5.Turn the ignition switch OFF.

6.Disconnect the EPS control unit connector B (2P) and connector C (2P).

7.Turn the ignition switch ON (II).

8.Measure the voltage between body ground and the EPS control unit connector B (2P) No. 1 terminal, connector C (2P) No. 1 terminal, connector C (2P) No. 2 terminal individually.

 

 

Is there battery voltage?


YES - Go to 9.


NO - Check for loose terminals in the EPS control unit connectors and motor connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit.n


9.Disconnect the motor 1P connector and motor 2P connector.

10.Measure the voltage between body ground and the EPS control unit connector B (2P) No. 1 terminal, connector C (2P) No. 1 terminal, connector C (2P) No. 2 terminal individually.

 

 

Is there battery voltage?


YES - Repair short to power in the wire harness between the EPS control unit and motor.n


NO - Short to power in the motor wire harness, or motor internal circuit, replace the motor: LHD type, RHD type.n