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How To Proceed With Troubleshooting [08/2013 - ]

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

HINT: 

  1. VEHICLE BROUGHT TO WORKSHOP 

    NEXT: Go to next step 

  2. CUSTOMER PROBLEM ANALYSIS 
    1. Interview the customer to confirm the trouble. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] .

      NEXT: Go to next step 

  3. INSPECT AUXILIARY BATTERY VOLTAGE 
    1. Measure the vehicle 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 COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the CAN communication system is functioning normally. Refer to DIAGNOSIS SYSTEM [08/2013 - ] .

      Result

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

      B → GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] 

      A: Go to next step 

  5. CHECK FOR DTC* 
    1. Check for DTCs and note any codes that are output. Refer to DTC CHECK / CLEAR [08/2013 - ] .
    2. Clear the DTCs.
    3. Recheck for DTCs.

      Result

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

      B → GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ]  

      A: Go to next step 

  6. PROBLEM SYMPTOMS TABLE 
    1. Refer to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ] .
      Result Proceed to
      Fault is not listed in problem symptoms table A
      Fault is listed in problem symptoms table B

      B → Go to step 8 

      A: Go to next step 

  7. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Operation Check. Refer to OPERATION CHECK [08/2013 - ] 
    2. Data List / Active Test. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] 
    3. Terminals of ECU. Refer to TERMINALS OF ECU [08/2013 - ] 

      NEXT: Go to next step 

  8. REPAIR OR REPLACE 

    NEXT: Go to next step 

  9. CONFIRMATION TEST 

    NEXT → END