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Home >> Lexus >> 2012 >> LS 600hL >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Active Stabilizer Suspension System (Diagnostic Codes (C1901 - U01108)) >> Active Stabilizer Suspension System >> DTC C1905: Timeout Initialization Check of Rear Actuator >> Procedure

DTC C1905: Timeout Initialization Check of Rear Actuator: Procedure

  1. CHECK CONNECTOR CONNECTION CONDITION 
    1. Turn the power switch OFF.
    2. Inspect the condition of the front active stabilizer control ECU connector terminal.

      OK

      Connector and terminal are not deformed or damaged. Terminal is not loose or corroded.

      HINT: 

      The harness from the front active stabilizer control actuator to the front active stabilizer control ECU is part of the front active stabilizer control actuator. If the harness is damaged and cannot be repaired, replace the front active stabilizer control actuator assembly. Refer to REMOVAL .

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  2. CHECK DTC (POWER STEERING SYSTEM) 
    1. Turn the power switch OFF.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch ON (READY) and the Techstream on.
    4. Check that power steering system DTCs are not output. Refer to DTC CHECK / CLEAR .

      OK

      DTC is not output.

    NG → See step   6 

    OK: Go to next step 

  3. INTERCHANGE FRONT AND REAR ACTIVE STABILIZER CONTROL ECU 
    1. Turn the power switch OFF.
    2. Interchange the front active stabilizer control ECU with the rear active stabilizer control ECU, and install them securely.

      HINT: 

      • Interchange the front and rear active stabilizer control ECUs and check for DTCs. After interchanging the ECUs, if a front stabilizer DTC is displayed, it can be determined that the front active stabilizer control ECU is malfunctioning. If no DTC is output, the front active stabilizer control actuator is malfunctioning.
      • For the ECU removal and installation procedures, refer to the front ECU procedures. Refer to REMOVAL or the rear ECU procedures. Refer to REMOVAL .

    NEXT: Go to next step 

  4. CLEAR DTC 
    1. Turn the power switch OFF.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch ON (IG) and the Techstream on.
    4. Clear the DTC. Refer to DTC CHECK / CLEAR .

    NEXT: Go to next step 

  5. CHECK OPERATION OF FRONT ACTIVE STABILIZER CONTROL ECU 
    1. Turn the power switch OFF.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch ON (READY) and wait 30 seconds or more. Then check for front stabilizer DTCs. Refer to DTC CHECK / CLEAR .

      OK

      DTC C192D is not output

    NG → See step   7 

    OK → See step   8 

  6. GO TO POWER STEERING SYSTEM (DIAGNOSTIC TROUBLE CODE CHART). Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  7. REPLACE FRONT ACTIVE STABILIZER CONTROL ECU. Refer to  REMOVAL 
  8. REPLACE FRONT ACTIVE STABILIZER CONTROL ACTUATOR ASSEMBLY. Refer to  REMOVAL