2016 Lexus ES 300hFACTORY OEM SERVICE PROCEDURE

How To Proceed With Troubleshooting [07/2015 - ]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  3

  3. CONNECT TECHSTREAM TO DLC3* 

    HINT: 

    If the display indicates a communication fault in the Techstream, inspect the DLC3.

    When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  4

  4. CHECK DTC AND FREEZE FRAME DATA* 
    1. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2015 - ]  and freeze frame data. Refer to FREEZE FRAME DATA [07/2015 - ] .

      HINT: 

      Record or print DTCs and freeze frame data, if necessary.

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  5

  5. CLEAR DTC AND FREEZE FRAME DATA* 
    1. Clear the DTCs and freeze frame data. Refer to DTC CHECK / CLEAR [07/2015 - ] .

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  6

  6. CONDUCT VISUAL INSPECTION 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  7

  7. SELECT CHECK MODE DIAGNOSIS* 
    1. Switch the ECM from normal mode to check mode.

      HINT: 

      Refer to Check Mode Procedure. Refer to CHECK MODE PROCEDURE [07/2015 - ] .

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  8

  8. CONFIRM PROBLEM SYMPTOMS 
    1. Confirm problem symptoms.

      HINT: 

      If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.

      Result

      Result Proceed to
      Malfunction does not occur A
      Malfunction occurs B

    Result:  2

    B 

    See step  10

    Result:  1

    A 

    See step  9

  9. SIMULATE SYMPTOMS 

    HINT: 

    Refer to Symptom Simulation. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [07/2015 - ] .

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  10

  10. CHECK DTC* 
    1. Check for DTCs.

      HINT: 

      Refer to DTC Check / Clear. Refer to DTC CHECK / CLEAR [07/2015 - ] .

      Result

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

    Result:  2

    B 

    See step  12

    Result:  1

    A 

    See step  11

  11. REFER TO DTC CHART 

    HINT: 

    Refer to Diagnostic Trouble Code Chart. Refer to DIAGNOSTIC TROUBLE CODE CHART [07/2015 - ] .

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  12

  12. CONDUCT BASIC INSPECTION 
    1. Conduct basic inspection.

      HINT: 

      Refer to Basic Inspection. Refer to BASIC INSPECTION [07/2015 - ] .

      Result

      Result Proceed to
      Malfunctioning parts not confirmed A
      Malfunctioning parts confirmed B

    Result:  2

    B 

    See step  17

    Result:  1

    A 

    See step  13

  13. REFER TO PROBLEM SYMPTOMS TABLE 

    HINT: 

    Refer to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE [07/2015 - 08/2016] Refer to PROBLEM SYMPTOMS TABLE [08/2016 - ] .

    Result

    Result Proceed to
    Malfunctioning circuit confirmed A
    Malfunctioning parts confirmed B

    Result:  2

    B 

    See step  17

    Result:  1

    A 

    See step  14

  14. CHECK ECM POWER SOURCE CIRCUIT 
    1. Check the ECM power source circuit.

      HINT: 

      Refer to ECM Power Source Circuit. Refer to ECM Power Source Circuit [07/2015 - ] .

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  15

  15. CONDUCT CIRCUIT INSPECTION 

    Result

    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    Result:  2

    B 

    See step  18

    Result:  1

    A 

    See step  16

  16. CHECK FOR INTERMITTENT PROBLEMS 
    1. Check for intermittent problems.

      HINT: 

      Refer to Check for Intermittent Problems. Refer to CHECK FOR INTERMITTENT PROBLEMS [07/2015 - ] .

      Result

      Proceed to
      NEXT

    Result:  1

    NEXT 

    See step  17

  17. CONDUCT PARTS INSPECTION 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  18

  18. IDENTIFY PROBLEM 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  19

  19. ADJUST AND/OR REPAIR 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    See step  20

  20. CONDUCT CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result:  1

    NEXT 

    END 

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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