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Home >> Toyota >> 2012 >> Prius Three >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (Auto Headlight Beam Level Control System (Plug-In) (Diagnostics - Introduction)) >> Automatic Headlight Beam Level Control System >> How To Proceed With Troubleshooting >> How To Proceed With Troubleshooting
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How To Proceed With Troubleshooting

WARNING: This page is about a different variant/trim than selected.

HINT: 

  1. VEHICLE BROUGHT TO WORKSHOP 

    NEXT: Go to next step 

  2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK 

    NEXT: Go to next step 

  3. INSPECT AUXILIARY BATTERY VOLTAGE 
    1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage

      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

      NEXT: Go to next step 

  4. CHECK FOR DTC* 
    1. Check for DTCs. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC is not output. A
      DTC is output. B

      B → Go to step 7 

      A: Go to next step 

  5. PROBLEM SYMPTOMS TABLE 
    1. Refer to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

      Result

      Result Proceed to
      Fault is not listed in Problem Symptoms Table. A
      Fault is listed in Problem Symptoms Table. B

      B → Go to step 7 

      A: Go to next step 

  6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Data List / Active Test. Refer to DATA LIST / ACTIVE TEST 
    2. Terminals of ECU. Refer to TERMINALS OF ECU 

      NEXT: Go to next step 

  7. ADJUST, REPAIR OR REPLACE 

    NEXT: Go to next step 

  8. CONFIRMATION TEST 

    NEXT → END