Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the parking support brake system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.
|
| 4. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here .gif)
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are not output | A |
| CAN communication system DTCs are output | B |
| B |  | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | SYSTEM CHECK |
(a) Check the vehicle specifications.
| Result | Proceed to |
|---|---|
| w/ Blind Spot Monitor System | A |
| w/o Blind Spot Monitor System | B |
| B | | GO TO STEP 9 |
|
| 6. | CHECK BLIND SPOT MONITOR SYSTEM |
(a) Use the Techstream to check if the blind spot monitor system is functioning normally.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output (w/ Panoramic View Monitor System) | A |
| DTCs are not output (w/ Parking Assist Monitor System) | B |
| DTCs are output | C |
| B | | GO TO STEP 8 |
| C | | GO TO BLIND SPOT MONITOR SENSOR |
|
| 7. | CHECK PANORAMIC VIEW MONITOR SYSTEM |
(a) Use the Techstream to check if the panoramic view monitor system is functioning normally.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not putput | A |
| DTCs are output | B |
| B | | GO TO PANORAMIC VIEW MONITOR SYSTEM |
|
| 8. | PROBLEM SYMPTOM CONFIRMATION |
|
| 9. | CHECK DTC* |
(a) Check for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are output | A |
| DTCs are not output (Problem symptom does not occur) | B |
| DTCs are not output (Problem symptom occurs) | C |
| B | | GO TO STEP 11 |
| C | | GO TO STEP 12 |
|
| 10. | DIAGNOSTIC TROUBLE CODE CHART (PARKING SUPPORT BRAKE SYSTEM) |
(a) Refer to Diagnostic Trouble Code Chart.
Click here
NOTICE:
The clearance warning ECU assembly outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the parking support brake system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.
| System | Proceed to |
|---|---|
| Parking Support Alert System | |
| NEXT | | GO TO STEP 14 |
| 11. | SYMPTOM SIMULATION |
(a) Refer to Symptom Simulation.
Click here
|
| 12. | PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Fault is not listed in Problem Symptoms Table | A |
| Fault is listed in Problem Symptoms Table | B |
| B | | GO TO STEP 14 |
|
| 13. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Operation Check
Click here
(b) Terminals of ECU
Click here
(c) Data List / Active Test
Click here
|
| 14. | CIRCUIT INSPECTION |
|
| 15. | IDENTIFICATION OF PROBLEM |
|
| 16. | REPAIR OR REPLACE |
|
| 17. | CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Operation Check
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Parts Location
PARTS LOCATION ILLUSTRATION *1 FRONT CORNER ULTRASONIC SENSOR RH *2 FRONT CENTER ULTRASONIC SENSOR RH *3 FRONT CENTER ULTRASONIC SENSOR LH *4 FRONT CORNER ULTRASONIC SENSOR LH
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cab
SEE MORE:
Terminals Of Ecu
TERMINALS OF ECU *a Hybrid Vehicle Control ECU - - HINT: The standard normal voltage between each pair of hybrid vehicle control ECU terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be c
Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, DCM (telematics transceiver)* or speaker
