Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | CONNECT TECHSTREAM TO DLC3* |
HINT:
If the display indicates a communication malfunction, inspect the DLC3.
When any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.
|
| 4. | CHECK DTC AND FREEZE FRAME DATA* |
(a) Check for DTCs.
Powertrain > Engine > Trouble Codes(b) Check for Freeze Frame Data.
Click here .gif)
HINT:
Record or print DTCs and Freeze Frame Data if necessary.
|
| 5. | CHECK VEHICLE CONTROL HISTORY AND VEHICLE CONTROL HISTORY FREEZE FRAME DATA* |
(a) Check for Vehicle Control History and Vehicle Control History Freeze Frame Data.
Powertrain > Engine > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
HINT:
Print Vehicle Control History and Vehicle Control History Freeze Frame Data if necessary.
|
| 6. | CLEAR DTC AND FREEZE FRAME DATA* |
(a) Clear the DTCs and Freeze Frame Data.
Powertrain > Engine > Clear DTCs
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| 7. | CONDUCT VISUAL INSPECTION |
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| 8. | SELECT CHECK MODE DIAGNOSIS* |
(a) Change the ECM from normal mode to check mode.
Powertrain > Engine > Utility| Tester Display |
|---|
| Check Mode |
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| 9. | CONFIRM PROBLEM SYMPTOMS |
(a) Confirm the problem symptoms.
HINT:
If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.
| Result | Proceed to |
|---|---|
| Malfunction does not occur | A |
| Malfunction occurs | B |
| B | .gif) | GO TO STEP 11 |
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| 10. | SIMULATE SYMPTOMS |
HINT:
Refer to Symptom Simulation.
Click here
|
| 11. | CHECK DTC* |
(a) Check for DTCs.
Powertrain > Engine > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are output | A |
| DTCs are not output | B |
| B | | GO TO STEP 13 |
|
| 12. | REFER TO DTC CHART |
HINT:
Refer to Diagnostic Trouble Code Chart.
Click here
|
| 13. | CONDUCT BASIC INSPECTION |
(a) Conduct basic inspection.
Click here
| Result | Proceed to |
|---|---|
| Malfunctioning parts not confirmed | A |
| Malfunctioning parts confirmed | B |
| B | | GO TO STEP 18 |
|
| 14. | REFER TO PROBLEM SYMPTOMS TABLE |
HINT:
Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Malfunctioning circuit confirmed | A |
| Malfunctioning parts confirmed | B |
| B | | GO TO STEP 18 |
|
| 15. | CHECK ECM POWER SOURCE CIRCUIT |
(a) Check the ECM power source circuit.
Click here
|
| 16. | CONDUCT CIRCUIT INSPECTION |
| Result | Proceed to |
|---|---|
| Malfunction not confirmed | A |
| Malfunction confirmed | B |
| B | | GO TO STEP 19 |
|
| 17. | CHECK FOR INTERMITTENT PROBLEMS |
(a) Check for intermittent problems.
Click here
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| 18. | CONDUCT PARTS INSPECTION |
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| 19. | IDENTIFY PROBLEM |
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| 20. | ADJUST AND/OR REPAIR |
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| 21. | CONDUCT CONFIRMATION TEST |
| NEXT | | END |
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