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 |
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| 2. | CUSTOMER PROBLEM ANALYSIS |
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| 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.
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 8. | PROBLEM SYMPTOM CONFIRMATION |
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| 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 |
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| 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 |
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| 13. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Operation Check
Click here
(b) Terminals of ECU
Click here
(c) Data List / Active Test
Click here
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| 14. | CIRCUIT INSPECTION |
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| 15. | IDENTIFICATION OF PROBLEM |
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| 16. | REPAIR OR REPLACE |
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| 17. | CONFIRMATION TEST |
| NEXT | | END |
