Lexus ES: How To Proceed With Troubleshooting
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CONFIRM PROBLEM SYMPTOMS |
|
| 3. | CUSTOMER PROBLEM ANALYSIS |
(a) Check if the vehicle has been jump started due to a discharged auxiliary battery.
| Result | Proceed to |
|---|---|
| The vehicle has never been jump started. | A |
| The vehicle has been jump started due to a discharged auxiliary battery. | B |
| B | .gif) | GO TO ON-VEHICLE INSPECTION / CHECK AUXILIARY BATTERY VOLTAGE |
|
| 4. | CAN COMMUNICATION SYSTEM CHECK |
(a) Using the Techstream, display the CAN Bus Check screen and check that all ECUs and sensors that are connected to the CAN communication system are displayed on the screen.
| NG | | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | CHECK FOR DTCS |
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| B | | GO TO DTC CHART |
|
| 6. | ON-VEHICLE INSPECTION |
| Result | Proceed to |
|---|---|
| Malfunctioning area has not been determined. | A |
| Malfunctioning area has been determined. | B |
| B | | GO TO STEP 8 |
|
| 7. | CHECK FOR INTERMITTENT PROBLEMS |
|
| 8. | REPAIR OR REPLACE |
| NEXT | | END |
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System Diagram
SYSTEM DIAGRAM
Parts Location
PARTS LOCATION ILLUSTRATION *1 INVERTER WITH CONVERTER ASSEMBLY *2 COMPRESSOR WITH MOTOR ASSEMBLY *3 AUXILIARY BATTERY *4 FUSIBLE LINK BLOCK ASSEMBLY - BATT-S FUSE *5 BATTERY
Precaution
PRECAUTION CHARGING SYSTEM PRECAUTION CAUTION:
Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair ma
SEE MORE:
Master Reservoir Level Malfunction (C1202)
DESCRIPTION DTC No. Detection Item INF Code DTC Detection Condition Trouble Area MIL Note C1202 Master Reservoir Level Malfunction 1126 Either of the following is detected:
The brake fluid level warning switch signal circuit is open for a certain period of time.
The res
Hybrid/EV Battery Discharge Control Malfunction (P300000)
DESCRIPTION The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals. If the SOC drops due to running out of fuel, the vehicle being left with the shift lever in N for a long time or a hybrid control system malfunction, this DTC will be stored. DTC No
