Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the lane control system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. | PRE-CHECK |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
|
| 3. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check if the CAN communication system is functioning normally.
HINT:
Refer to CAN Bus Check in CAN Communication System.
Click here .gif)
OK:
CAN communication system is functioning normally.
| NG | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
| 4. | CHECK FOR DTCs* |
(a) Using the Techstream, Check for DTCs.
Chassis > Lane Control > Trouble Codes(b) Make a note of the output DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B | | GO TO STEP 6 |
|
| 5. | CHECK VEHICLE CONTROL HISTORY* |
(a) Using the Techstream, check for vehicle control history (RoB).
Chassis > Lane Control > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
(b) Make a note of the output vehicle control history (RoB).
| Result | Proceed to |
|---|---|
| Vehicle control history (RoB) is not output | A |
| Vehicle control history (RoB) is output | B |
| A | | GO TO SYMPTOM SIMULATION |
| B | | GO TO STEP 7 |
| 6. | RECONFIRM DTC OUTPUT* |
(a) Using the Techstream, Clear the DTCs.
Chassis > Lane Control > Clear DTCs(b) Reproduce the vehicle conditions that were present when the DTCs that were noted were stored.
HINT:
Refer to each corresponding DTC for details on the detection conditions.
Click here
(c) Using the Techstream, check for DTCs.
Chassis > Lane Control > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| A | | GO TO STEP 5 |
| B | | GO TO DTC CHART |
| 7. | RECONFIRM VEHICLE CONTROL HISTORY* |
(a) Using the Techstream, clear the vehicle control history (RoB).
Chassis > Lane Control > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
(b) Using the Techstream, check for vehicle control history (RoB).
Chassis > Lane Control > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
| Result | Proceed to |
|---|---|
| Vehicle control history (RoB) is not output | A |
| Vehicle control history (RoB) is output | B |
| A | | GO TO SYMPTOM SIMULATION |
| B | | GO TO VEHICLE CONTROL HISTORY |
READ NEXT:
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE LTA NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Be sure to make a note of the current settings b
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
If CAN communication system and lane control system DTCs are not output and any of the following problem symptoms exist, perform troubleshooting by checking the appropr
Terminals Of Ecu
TERMINALS OF ECU NOTICE:
DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.
D
SEE MORE:
Motor Electronics Coolant Pump "A" Component Internal Failure (P0C7396)
DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored when the inverter water pump assembly is malfunctioning. The cause of this malfunction may be one of the following: Inverter water pump assembly malfunction
Inverter water pump assembly internal malfunction
Open or short in wire harness
I
Reassembly
REASSEMBLY PROCEDURE 1. INSTALL NO. 5 ROCKER PANEL MOULDING PROTECTOR HINT: When installing the No. 5 rocker panel moulding protector, heat the body rocker panel moulding assembly using a heat light. Heating Temperature Item Temperature Body Rocker Panel Moulding Assembly 20 to 30°C (68
