MDPS Power Supply Assembly

Repair Procedures

Replacement

1. 1
   Turn the ignition OFF and disconnect the negative (-) battery cable.
2. 2
   Turn the steering wheel so that the front wheels are in the straight-ahead position.
3. 3
   Remove the steering wheel. (Refer to Steering System - "Steering Wheel")
4. 4
   Remove the steering column lower cover. (Refer to Body — "Steering Column Lower Cover")
5. 5
   Remove the emergency pad lower panel. (Refer to Body - "Emergency Pad Lower Panel")
6. 6
   Disconnect the MDPS connector (A).

   

7. 7
   Remove the fixing clip (A), and then disconnect the wiring from the steering column.

   

8. 8
   Loosen the mounting screws and remove the air duct [LH] (A).

   

9. 9
   Loosen the mounting nut (A) and bolt (B), and remove the steering column and EPS unit resting on the vehicle floor. Tightening torque (A): 25.0–29 N·m (B): 53.9–59 N·m

   

   

10. 10
    Remove the MDPS motor (A) after loosening the bolts.

    

11. 11
    Install in the reverse order of removal.
12. 12
    Perform "EPS Type Recognition" using GDS. (Refer to MDPS Motor — "Diagnosis Using GDS")
13. 13
    Perform "ASP Calibration" using GDS. (Refer to MDPS Motor — "Diagnosis Using GDS")
14. 14
    Check the diagnostic trouble code.
15. 15
    Turn the IGN switch off and wait at least 20 seconds. Then check operation after starting the engine.

Diagnosis with GDS

EPS Type Recognition

If EPS type recognition is not performed, a problem will occur with the motor driven power steering performance.

1. 1
   Connect the self-diagnosis connector (16-pin) located at the bottom of the driver's side airbag to the self-diagnosis device.
2. 2
   Turn on the scan tool after turning the ignition switch ON.
3. 3
   Turn the steering wheel to the straight-ahead position.
4. 4
   After selecting "Vehicle Model" and "System", select "EPS Type Recognition" on the GDS vehicle selection screen.

   

   

5. 5
   Clear the diagnostic trouble code.
6. 6
   Turn the IG switch off and wait at least 20 seconds before starting the engine. Then verify that the MDPS operates correctly. SAS Calibration

   • The steering angle sensor detects the steering wheel angle and steering angular velocity. The steering wheel angle and steering speed are used to control damping and steering wheel return in addition to providing assist torque.

   You can use a scan tool (GDS) to check whether the battery voltage is normal before performing "SAS Calibration". Make sure no connector is disconnected from the vehicle or the scan tool is disconnected during "SAS Calibration". After completing "SAS Calibration," turn the IG switch off and wait 10 seconds or more before starting the engine to check operation.

7. 7
   Connect the self-diagnosis connector (16-pin), located in the lower panel on the driver's side, to the diagnostic device.
8. 8
   Turn on the scan tool after turning the ignition switch ON.
9. 9
   Turn the steering wheel to the straight-ahead position.
10. 10
    After selecting "Vehicle Model" and "System," select "SAS Calibration" on the GDS vehicle selection screen.

    

    

11. 11
    Clear the diagnostic trouble code.
12. 12
    Turn the IG switch OFF and wait at least 10 seconds before starting the engine. Then check that the MDPS operates correctly.