Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the parking support alert system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, replace or recharge the auxiliary 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 | .gif) | 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 8 |
|
| 6. | CHECK BLIND SPOT MONITOR SYSTEM |
(a) Use the Techstream to check if the blind spot monitor system is functioning normally.
| Result | Proceed to |
|---|---|
| DTCs are not output (w/ Panoramic View Monitor System) | A |
| DTCs are not output (w/o Panoramic View Monitor System) | B |
| DTCs are output | C |
| B | | GO TO STEP 8 |
| C | | GO TO BLIND SPOT MONITOR SYSTEM |
|
| 7. | CHECK PANORAMIC VIEW MONITOR SYSTEM |
(a) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B | | GO TO PANORAMIC VIEW MONITOR SYSTEM |
|
| 8. | PROBLEM SYMPTOM CONFIRMATION |
|
| 9. | CHECK DTC* |
(a) Check for DTCs and note any codes that are output.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(c) 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 symptoms does not exsist) | B |
| DTCs are not output (Problem symptoms exist) | C |
| B | | GO TO STEP 11 |
| C | | GO TO STEP 12 |
|
| 10. | DIAGNOSTIC TROUBLE CODE CHART (PARKING SUPPORT ALERT 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 TOYOTA parking assist-sensor system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.
| System | Proceed to |
|---|---|
| Parking Support Brake 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:
No. 1 Clearance Warning Buzzer Circuit
DESCRIPTION This circuit consists of the No. 1 clearance warning buzzer and clearance warning ECU assembly. An ECU-excited type buzzer is used. The ECU operates the buzzers using a sound pattern that
No. 2 Clearance Warning Buzzer Circuit
DESCRIPTION This circuit consists of the No. 2 clearance warning buzzer and clearance warning ECU assembly. An ECU-excited type buzzer is used. The ECU operates the buzzers using a sound pattern that
Operation Check
OPERATION CHECK SELF-DIAGNOSIS SYSTEM (a) When a malfunction occurs in the parking support alert system or the system cannot be used, a warning is displayed on the multi-information display, each indi
SEE MORE:
Basic Inspection
CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following procedure, the location of the problem ca
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever a lighting system DTC is stored, the headlight ECU sub-assembly and forward recognition camera stores the current vehicle state as freeze frame data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c
