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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 (Motor Driven Power Steering System (PHEV)) >> Repair Procedures >> Component Repair Procedures >> [C-MDPS] >> C-MDPS System Component Workflow

C-MDPS System Component Workflow

WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.
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  1. Noise/malfunction Inspection 
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  2. Warning lamp (DTC)/CAN Line error 
    1. Checking Connectors and Wiring 
      1. Checking Connectors and Wiring.

        Check for damage, push-back, or improper connection in each connector and wiring.

        1. Check the wiring on the vehicle side.
          • Check for open/short - circuit due to faulty connection, damage, or foreign substance.
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        2. Check the wiring on the ECU side (motor 3 - phase power).
          • Check for open/short - circuit due to faulty connection, damage, or foreign substance.
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        3. Check the motor connector.
          • Terminal expansion and damage
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          NOTE: The MDPS motor must be replaced if connector or terminals are damaged.
        4. Check the motor wiring.
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          NOTE: The MDPS motor must be replaced if connector or terminals are damaged.
        5. Remove the grommet (A) and then check the wiring on the Torque Angle Sensor (TAS) side (B).
          • Check for damage, push-back, or improper connection in each connector and wiring.
          G14958129Courtesy of KIA MOTORS AMERICA, INC.
          NOTE:
          • The MDPS motor must be replaced if connector or terminals are damaged.
          • Check the Torque Angle Sensor (TAS) wiring in case of C1259/C1290 DTC.
        6. Check the wiring ECU side (A).
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    2. Inspection Items per DTC 
      DTC Problem Fault isolation method Actions to take
      C129002 Torque sensor signal error Erase DTC and check the sensor connector connection. In case of bad connection condition of the sensor connector, replace the warning light sensor cable and replace the column And housing (56390) for another case.
      C125901
      C125929
      C125938      		 Steering angle sensor signal error After Resetting zero point And erasing DTC, check connector connection condition.
      C111201 Torque sensor power supply error Erase DTC and check the connector connection condition. In case of bad connection condition of the sensor connector, replace the warning light sensor cable and replace the power pack (56370) for another case.
      C160404 ECU hardware error Erase DTC and check. In case of reoccurrence, replace the power pack (56370)
      C170401 Open Relay
      C170504 ECU Charge/discharge circuit error
      C241216
      C241262      		 Motor circuit open/short
      Motor current error
      C241319
      C241328
      C241396      		 Motor Current over flow error
      Motor current gate error
      Motor current sensor error current error
      C240162 Motor circuit error
      C1261 Steering angle zero-setting error After Resetting zero point And erasing DTC, Check if the sensor connector is connected incorrectly Resetting zero point And replace the column And housing (56390)
      C161187
      C161F64
      C161F86      		 EMS CAN message receive error
      Vehicle speed monitoring error
      Vehicle speed signal error
      1. Check the Chassis CAN condition.
      2. Check the connector connection.
      3. Check the Engine ECU.
      4. Check the history of the engine shutdown while driving.
      		 Erase DTC (MDPS replacing no required)
      C161688 CAN BUS OFF
      C162887
      C163386      		 Cluster CAN signal receive error
      Cluster vehicle speed error      		 Check the cluster connector connection.
      C169287
      C169386      		 VSM message receive error
      ESC signal error      		 Check the ESC, Chassis CAN condition.
      C171101 ECU abnormal shutdown Check after erasing DTC
      C180487
      C180586      		 LKA message receive error
      LKA signal error      		 Check the LAK, CAN Line
      C181287
      C181786      		 Gateway CAN message receive error
      Gateway CAN signal error      		 Check the Gateway.
  3. MDPS Performance Inspection 
    1. Inspect steering angle and DTCs relevant to the steering system.
    2. Inspection for heavy steering effort
      1. Inspect tire pressure and width.
      2. Check DTCs relevant to the CAN communication error.
      3. Check the wheel alignment.
  4. MDPS common problems 
    Case 1 Case 2 Case 3
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    Steering shaft noise Clock spring noise DAB/Wire noise
    Replace steering shaft Replace clock spring Rearrange and replace DAB
    Case 4 Case 5 Case 6
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    Multifunction switch noise M8 nut mount defect M10 nut mount defect
    Replace multifunction switch Retighten nut Retighten nut
    Case 7 Case 8
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    Cowl top bolt mount defect Cowl bar nut mount defect
    Retighten cowl top bolt Replace clock spring
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