Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- *: Use the Techstream
- Use the following procedure to troubleshoot the motor generator control system.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | CONNECT TECHSTREAM TO THE DLC3* |
HINT:
If the Techstream indicates a communication error, inspect the DLC3.
|
| 4. | CHECK DTC AND FREEZE FRAME DATA* |
Click here .gif)
HINT:
Make sure to save freeze frame data because the data is necessary for performing simulation tests.
|
| 5. | CLEAR DTC AND FREEZE FRAME DATA* |
Click here
|
| 6. | CONDUCT VISUAL INSPECTION |
|
| 7. | CONFIRM PROBLEM SYMPTOMS |
HINT:
If the hybrid vehicle control system does not start, perform steps 9 and 11 first.
| Malfunction occurs. | .gif) | GO TO STEP 10 |
|
| 8. | DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS |
|
| 9. | CHECK FOR DTCS* |
Click here
| DTCs are not output. | | GO TO STEP 16 |
|
| 10. | REFER TO DTC CHART |
|
| 11. | CONDUCT CIRCUIT INSPECTION |
| Malfunction confirmed. | | GO TO STEP 13 |
|
| 12. | CHECK FOR INTERMITTENT PROBLEMS |
Click here
|
| 13. | IDENTIFY PROBLEM |
|
| 14. | ADJUST AND/OR REPAIR |
|
| 15. | CONDUCT CONFIRMATION TEST |
| NEXT | | END |
| 16. | CONDUCT BASIC INSPECTION |
| Malfunctioning parts confirmed. | | GO TO STEP 18 |
|
| 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.
Check "All Readiness" after simulating malfunction symp
Terminals Of Ecu
TERMINALS OF ECU *1 Inverter with Converter Assembly HINT: Since the inverter with converter assembly uses waterproof connectors, the voltage and waveforms cannot be inspected directly. Stand
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The motor generator control ECU (MG ECU) (inverter with converter assembly) has a self-diagnosis system. If the motor generator control ECU (MG ECU), motor generator s
SEE MORE:
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY (a) Check Rotation Direction Signal: (1) Connect the Techstream to the DLC3. (2) Turn the power switch on (IG). (3) Turn the Techstream on. (4) Enter the following menus: Powertrain / Engine / Data List / VVT-iE Mo
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
It is difficult to show the specified values (judgment values) clearly because freeze frame data values change significantly due to differences in measurement conditions, surroundings, or vehicle conditions. For this reason, there may be a problem even
