CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. | VEHICLE BROUGHT TO WORKSHOP |
|
2. | CUSTOMER PROBLEM ANALYSIS |
HINT:
What | Vehicle model, system name |
When | Date, time, occurrence frequency |
Where | Road conditions |
Under what conditions? | Driving conditions, weather conditions |
How did it happen? | Problem symptoms |
|
3. | 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.
|
4. | CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
Result | Proceed to |
---|---|
CAN DTCs are not output | A |
CAN DTCs are output | B |
B | ![]() | GO TO CAN COMMUNICATION SYSTEM |
|
5. | CHECK FOR DTC* |
(a) Check for DTCs.
Body Electrical > Main Body > Trouble Codes Result | Proceed to |
---|---|
DTCs are not output (w/ Automatic High Beam System) | A |
DTCs are not output (w/o Automatic High Beam System) | B |
DTCs are output | C |
B | ![]() | GO TO STEP 7 |
C | ![]() | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
6. | CHECK FOR DTC* |
(a) Check for DTCs.
Body Electrical > Front Recognition Camera (Front Lighting Control) > Trouble Codes Result | Proceed to |
---|---|
DTCs are not output | A |
DTCs are output | B |
B | ![]() | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
7. | CHECK VEHICLE CONTROL HISTORY* |
(a) Using the Techstream, check for Vehicle Control History (RoB).
Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility Tester Display |
---|
Vehicle Control History (RoB) |
NOTICE:
Make sure to record the output Vehicle Control History.
Result | Proceed to |
---|---|
Vehicle Control History codes are not output | A |
Vehicle Control History code X2020 and/or X204D is output | B |
Vehicle Control History codes other than X2020 and X204D are output | C |
B | ![]() | GO TO VEHICLE CONTROL HISTORY (Check Details of Code X2020 or X204D) |
C | ![]() | GO TO STEP 12 |
|
8. | 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 PROBLEM SYMPTOMS TABLE |
|
9. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check.
Click here
(b) Terminals of ECU.
Click here
(c) Data List / Active Test.
Click here
(d) On-vehicle Inspection.
(e) Inspection.
|
10. | ADJUST, REPAIR OR REPLACE |
|
11. | CONFIRMATION TEST |
NEXT | ![]() | END |
12. | CHECK VEHICLE CONTROL HISTORY* |
(a) Clear Vehicle Control History
(1) Clear the Vehicle Control History.
Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility Tester Display |
---|
Vehicle Control History (RoB) |
(b) Check Vehicle Control History
(1) Using the Techstream, check the Vehicle Control History (RoB).
Body Electrical > Front Recognition Camera (Front Lighting Control) > Utility Tester Display |
---|
Vehicle Control History (RoB) |
Result | Proceed to |
---|---|
Vehicle Control History (RoB) codes are not output | A |
Vehicle Control History (RoB) codes are output | B |
A | ![]() | USE SIMULATION METHOD TO CHECK |
B | ![]() | GO TO VEHICLE CONTROL HISTORY |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Conditioning System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the air conditioning system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. INSPECT BATTERY VOLTAGE (a) Inspect the battery voltage. Standard Voltage: 11 to ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Sfi System: EVAP System
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