Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- *: Use the Techstream
- Use the following procedure to troubleshoot the hybrid control system.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | CUSTOMER PROBLEM ANALYSIS |
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| 3. | CONNECT TECHSTREAM TO THE DLC3* |
HINT:
If the display on the tester indicates a communication error, inspect the DLC3.
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| 4. | CHECK DTC AND FREEZE FRAME DATA* |
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HINT:
- Make sure to save freeze frame data because the data is necessary for performing simulation tests.
- For the hybrid control system, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs. By following the diagnosis path based on the combination of output DTCs, it is possible to narrow down the problem early and avoid unnecessary diagnosis.
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| 5. | CLEAR DTC AND FREEZE FRAME DATA* |
Click here
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| 6. | CONDUCT VISUAL INSPECTION |
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| 7. | CONFIRM PROBLEM SYMPTOMS |
HINT:
If the hybrid system does not start, perform steps 9 and 11 first.
| Malfunction occurs. | .gif) | GO TO STEP 10 |
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| 8. | DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS |
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| 9. | CHECK FOR DTCS* |
Click here
| DTCs are not output. | | GO TO STEP 16 |
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| 10. | REFER TO DTC CHART |
Click here
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| 11. | CONDUCT CIRCUIT INSPECTION |
| Malfunction confirmed. | | GO TO STEP 13 |
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| 12. | CHECK FOR INTERMITTENT PROBLEMS |
Click here
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| 13. | IDENTIFY PROBLEM |
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| 14. | ADJUST AND/OR REPAIR |
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| 15. | CONDUCT CONFIRMATION TEST |
| NEXT | | END |
| 16. | CONDUCT BASIC INSPECTION |
| Malfunctioning parts confirmed. | | GO TO STEP 18 |
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| 17. | CHECK ECU POWER SOURCE CIRCUIT |
| NEXT | | GO TO STEP 11 |
| 18. | CONDUCT PARTS INSPECTION |
| NEXT | | GO TO STEP 13 |
READ NEXT:
Utility
UTILITY ALL READINESS HINT:
With "All Readiness", you can check whether or not the DTC judgment has been completed by using the Techstream.
You should check "All Readiness" after simulating malfu
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE Hybrid Control System Symptom Suspected Area Link Cannot enter EV drive mode CAN Communication System Pattern Select Switch EV Mode Circuit EV mod
Terminals Of Ecu
TERMINALS OF ECU HYBRID VEHICLE CONTROL ECU Terminal No. (Symbol) Wiring Color Terminal Description Input/Output Condition Specified Condition A32-1 (+B2) - G59-6 (E1) W - W-B Po
SEE MORE:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
The ECM is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communication system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NE
Fail-safe Chart
FAIL-SAFE CHART If the following DTC is stored, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily. DTC No. Fail-safe Operation Fail-safe Deactivation Condition P161A87 Generator command is fixed. Engine switch is turned on (IG) after condition returns to norm
