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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Transmission >> Transfer Case >> Dynamic Torque Control AWD System - Diagnostic Codes, Symptom Tests & Circuit Tests >> Dynamic Torque Control AWD System >> DTC C05D8-1C: 4WD/AWD Clutch "A" Actuator Control Circuit Performance Circuit Voltage Out of Range [12/2019 - ] >> Procedure

DTC C05D8-1C: 4WD/AWD Clutch "A" Actuator Control Circuit Performance Circuit Voltage Out of Range [12/2019 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - FRONT 4WD LINEAR SOLENOID (TRANSFER ASSEMBLY)) 
    1. Disconnect the M41 4WD ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M41-5 (SLF+) - M41-6 (SLF-) 20°C (68°F) 0.73 to 0.83 Ω
      M41-5 (SLF+) - Body ground Always 10 kΩ or higher
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      M41-6 (SLF-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [12/2019 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - FRONT 4WD LINEAR SOLENOID (TRANSFER ASSEMBLY)) 
    1. Disconnect the M41 4WD ECU assembly connector.
    2. Disconnect the s10 front 4WD linear solenoid (transfer assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M41-5 (SLF+) - s10-2 (SLF+) Always Below 1 Ω
      M41-6 (SLF-) - s10-1 (SLF-) Always Below 1 Ω
      M41-5 (SLF+) or s10-2 (SLF+) - Body ground Always 10 kΩ or higher
      M41-6 (SLF-) or s10-1 (SLF-) - Body ground Always 10 kΩ or higher
      M41-5 (SLF+) or s10-2 (SLF+) - M41-6 (SLF-) or s10-1 (SLF-) Always 10 kΩ or higher
      M41-5 (SLF+) - M41-16 (SLFS) Always 10 kΩ or higher
      M41-6 (SLF-) - M41-16 (SLFS) Always 10 kΩ or higher
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      M41-6 (SLF-) or s10-1 (SLF-) - Body ground Always Below 1 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE TRANSFER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR