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Home >> Toyota >> 2012 >> Highlander Hybrid >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control System (Diagnostic Codes (P0ADB-227 - U0424-537) & Circuit Tests)) (Hybrid) >> Hybrid Control System >> DTC P3000-603: HV Battery Malfunction >> Procedure

DTC P3000-603: HV Battery Malfunction: Procedure

  1. CHECK DTC OUTPUT (HV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      P3000-603 only is output. A
      DTCs other than P3000-603 are also output. B
    5. Turn the ignition switch off.

    B → See step   4 

    A: Go to next step 

  2. REPLACE HYBRID VEHICLE CONTROL ECU 
    1. Replace the hybrid vehicle control ECU. Refer to REMOVAL .

    NEXT → See step   3 

  3. REPLACE HV BATTERY. Refer to  REMOVAL 
  4. GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART 
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