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
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Lost Communication with Hybrid Powertrain Control Module (Hybrid/EV Battery Local Bus) Missing Message (U115087)
DESCRIPTION The battery ECU assembly transmits and receives signals via CAN communication to and from the hybrid vehicle control ECU. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate U115087 Lost Communication with Hybrid Powertrain Control Module (
Rear Speed Sensor RH Circuit Output (C1415,C1416)
DESCRIPTION Each speed sensor detects the wheel speed and sends the signals to the skid control ECU (brake booster with master cylinder assembly). These signals are used for ABS control. HINT: The output voltage values shown below are for when the vehicle wire harnesses are connected to the skid con
