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Home >> Lexus >> 2010 >> LS 600hL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (Diagnostic Codes (P0338-885 - P0A1A-658) >> Hybrid Control System >> DTC P0A08-101: DC / DC Converter Status Circuit >> Procedure

DTC P0A08-101: DC / DC Converter Status Circuit: Procedure

  1. CHECK DTC OUTPUT (HV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      P0A08-101 only is output. A
      P3085-188 is also output. B

    B → See step   4 

    A: Go to next step 

  2. REPLACE HYBRID VEHICLE CONVERTER 
    1. Replace the hybrid vehicle converter. Refer to COMPONENTS .

    NEXT: Go to next step 

  3. CHECK AUXILIARY BATTERY 
    1. Turn the power switch on (READY).
    2. Leave the vehicle for 5 minutes. (The auxiliary battery will be charged.)
    3. Turn the vehicle off.
    4. Measure the voltage of the auxiliary battery.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      Auxiliary battery positive terminal (+) - Auxiliary battery negative terminal (-) Power switch on (READY) 11 to 14 V

      HINT: 

      The auxiliary battery may have discharged and deteriorated due to a malfunction in the hybrid vehicle converter. Therefore, inspect the auxiliary battery and replace it if it has deteriorated.

    NG → REPLACE AUXILIARY BATTERY 

    OK → END 

  4. GO TO DTC CHART. Refer to  DESCRIPTION