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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Steering >> Power Steering >> Power Steering System - Diagnostic Codes & Circuit Tests >> Power Steering System >> DTC C05D6-04: Power Steering Control Module Processor System Internal Failure; DTC C05D6-46: Power Steering Control Module Processor Calibration / Parameter Memory Failure; DTC C05D6-49: Power Steering Control Module Processor Internal Electronic Failure; DTC C1000-1C: Control Module Internal Temperature Sensor "A" Circuit Voltage Out of Range; DTC C1005-1C: Control Module Internal Temperature Sensor "B" Circuit Voltage Out of Range; DTC C1511-62: Power Steering Torque Sensor "A" Signal Compare Failure; DTC C1511-87: Power Steering Torque Sensor "A" Missing Message; DTC C1512-62: Power Steering Torque Sensor "B" Signal Compare Failure; DTC C1512-87: Power Steering Torque Sensor "B" Missing Message; DTC C151A-17: Power Steering Torque Sensor "A" Supply Voltage Circuit Voltage Above Threshold; DTC C151B-17: Power Steering Torque Sensor "B" Supply Voltage Circuit Voltage Above Threshold; DTC C152A-18: Power Steering Motor "A" Circuit Current Below Threshold; DTC C152A-19: Power Steering Motor "A" Circuit Current Above Threshold; DTC C152B-18: Power Steering Motor "B" Circuit Current Below Threshold; DTC C152B-19: Power Steering Motor "B" Circuit Current Above Threshold; DTC C153A-00: Malfunction of Power Steering Motor "A" Inverter Pre-Driver; DTC C153A-19: Power Steering Motor "A" Inverter Circuit Current Above Threshold; DTC C153A-9F: Power Steering Motor "A" Inverter Stuck Off; DTC C153B-00: Malfunction of Power Steering Motor "B" Inverter Pre-Driver; DTC C153B-19: Power Steering Motor "B" Inverter Circuit Current Above Threshold; DTC C153B-9F: Power Steering Motor "B" Inverter Stuck Off; DTC C154A-7E: Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck On; DTC C154A-7F: Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck Off; DTC C154B-7E: Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck On; DTC C154B-7F: Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck Off; DTC C156A-9E: Power Steering Motor "A" Shut Down Relay Stuck On; DTC C156A-9F: Power Steering Motor "A" Shut Down Relay Stuck Off; DTC C156B-9E: Power Steering Motor "B" Shut Down Relay Stuck On; DTC C156B-9F: Power Steering Motor "B" Shut Down Relay Stuck Off; DTC C157A-11: Power Steering Motor "A" Current Sensor Circuit Short to Ground; DTC C157A-62: Power Steering Motor "A" Current Sensor Signal Compare Failure; DTC C157B-11: Power Steering Motor "B" Current Sensor Circuit Short to Ground; DTC C157B-62: Power Steering Motor "B" Current Sensor Signal Compare Failure; DTC C159A-49: Power Steering Motor "A" Terminal Voltage Detect Circuit Internal Electronic Failure; DTC C159B-49: Power Steering Motor "B" Terminal Voltage Detect Circuit Internal Electronic Failure; DTC C15D1-62: Power Steering Motor Position Sensor "A" Signal Compare Failure; DTC C15D1-87: Power Steering Motor Position Sensor "A" Missing Message; DTC C15D2-62: Power Steering Motor Position Sensor "B" Signal Compare Failure; DTC C15D2-87: Power Steering Motor Position Sensor "B" Missing Message [11/2023 - ] >> Procedure

DTC C05D6-04: Power Steering Control Module Processor System Internal Failure; DTC C05D6-46: Power Steering Control Module Processor Calibration / Parameter Memory Failure; DTC C05D6-49: Power Steering Control Module Processor Internal Electronic Failure; DTC C1000-1C: Control Module Internal Temperature Sensor "A" Circuit Voltage Out of Range; DTC C1005-1C: Control Module Internal Temperature Sensor "B" Circuit Voltage Out of Range; DTC C1511-62: Power Steering Torque Sensor "A" Signal Compare Failure; DTC C1511-87: Power Steering Torque Sensor "A" Missing Message; DTC C1512-62: Power Steering Torque Sensor "B" Signal Compare Failure; DTC C1512-87: Power Steering Torque Sensor "B" Missing Message; DTC C151A-17: Power Steering Torque Sensor "A" Supply Voltage Circuit Voltage Above Threshold; DTC C151B-17: Power Steering Torque Sensor "B" Supply Voltage Circuit Voltage Above Threshold; DTC C152A-18: Power Steering Motor "A" Circuit Current Below Threshold; DTC C152A-19: Power Steering Motor "A" Circuit Current Above Threshold; DTC C152B-18: Power Steering Motor "B" Circuit Current Below Threshold; DTC C152B-19: Power Steering Motor "B" Circuit Current Above Threshold; DTC C153A-00: Malfunction of Power Steering Motor "A" Inverter Pre-Driver; DTC C153A-19: Power Steering Motor "A" Inverter Circuit Current Above Threshold; DTC C153A-9F: Power Steering Motor "A" Inverter Stuck Off; DTC C153B-00: Malfunction of Power Steering Motor "B" Inverter Pre-Driver; DTC C153B-19: Power Steering Motor "B" Inverter Circuit Current Above Threshold; DTC C153B-9F: Power Steering Motor "B" Inverter Stuck Off; DTC C154A-7E: Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck On; DTC C154A-7F: Power Supply & Contrary Connection Protection Relay "A" Actuator Stuck Off; DTC C154B-7E: Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck On; DTC C154B-7F: Power Supply & Contrary Connection Protection Relay "B" Actuator Stuck Off; DTC C156A-9E: Power Steering Motor "A" Shut Down Relay Stuck On; DTC C156A-9F: Power Steering Motor "A" Shut Down Relay Stuck Off; DTC C156B-9E: Power Steering Motor "B" Shut Down Relay Stuck On; DTC C156B-9F: Power Steering Motor "B" Shut Down Relay Stuck Off; DTC C157A-11: Power Steering Motor "A" Current Sensor Circuit Short to Ground; DTC C157A-62: Power Steering Motor "A" Current Sensor Signal Compare Failure; DTC C157B-11: Power Steering Motor "B" Current Sensor Circuit Short to Ground; DTC C157B-62: Power Steering Motor "B" Current Sensor Signal Compare Failure; DTC C159A-49: Power Steering Motor "A" Terminal Voltage Detect Circuit Internal Electronic Failure; DTC C159B-49: Power Steering Motor "B" Terminal Voltage Detect Circuit Internal Electronic Failure; DTC C15D1-62: Power Steering Motor Position Sensor "A" Signal Compare Failure; DTC C15D1-87: Power Steering Motor Position Sensor "A" Missing Message; DTC C15D2-62: Power Steering Motor Position Sensor "B" Signal Compare Failure; DTC C15D2-87: Power Steering Motor Position Sensor "B" Missing Message [11/2023 - ]: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs.

      Chassis > EMPS > Clear DTCs 

      Result

      Proceed to
      NEXT
    2. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR DTC 

    Chassis > EMPS > Trouble Codes 

    Result

    Result Proceed to
    Only C05D6-04, C05D6-46, C05D6-49, C1000-1C, C1005-1C, C1511-62, C1511-87, C1512-62, C1512-87, C151A-17, C151B-17, C152A-18, C152A-19, C152B-18, C152B-19, C153A-00, C153A-19, C153A-9F, C153B-00, C153B-19, C153B-9F, C154A-7E, C154A-7F, C154B-7E, C154B-7F, C156A-9E, C156A-9F, C156B-9E, C156B-9F, C157A-11, C157A-62, C157B-11, C157B-62, C159A-49, C159B-49, C15D1-62, C15D1-87, C15D2-62 or C15D2-87 is output A
    C05D6-04, C05D6-46, C05D6-49, C1000-1C, C1005-1C, C1511-62, C1511-87, C1512-62, C1512-87, C151A-17, C151B-17, C152A-18, C152A-19, C153A-9F, C152B-18, C152B-19, C153B-9F, C153A-00, C153A-19, C153B-00, C153B-19, C154A-7E, C154A-7F, C154B-7E, C154B-7F, C156A-9E, C156A-9F, C156B-9E, C156B-9F, C157A-11, C157A-62, C157B-11, C157B-62, C159A-49, C159B-49, C15D1-62, C15D1-87, C15D2-62 or C15D2-87 and other DTCs are output B
    DTCs are not output C

    Result: 

    A 

    REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

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