Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: 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 |
|
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| 2. | INSPECT BATTERY VOLTAGE |
(a) Inspect 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.
(d) Using the Techstream, check the Data List item "Operation Limitation Control History Count".
Click here .gif)
| Tester Display |
|---|
| Operation Limitation Control History Count (Level1) |
| Operation Limitation Control History Count (Level2) |
HINT:
If a value other than zero is displayed for "Operation Limitation Control History Count (Level1)" or "Operation Limitation Control History Count (Level2)", PTC heater operation may have been limited in the past. If the operation is still limited, the message "Operation of Electrical Items Restricted." will be displayed on the multi-information display in the combination meter assembly. In this case, inspect the charging system.
Click here
|
| 3. | CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
| 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 |
|
| 4. | CHECK FOR DTC* |
(a) Check for DTCs and note any codes that are output.
Click here
(b) Clear the DTCs.
Click here
(c) Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the operation indicated by the DTC.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 5. | 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 |
|
| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Panel diagnosis (indicator check, sensor check).
Click here
(b) Data List / Active Test.
Click here
(c) Terminals of ECU.
Click here
(d) On-vehicle Inspection.
(e) Inspection.
|
| 7. | ADJUST, REPAIR OR REPLACE |
| NEXT | | END |
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE AIR CONDITIONING SYSTEM (a) Customizing with the Techstream. NOTICE:
When the customer requests a change in a function, first make sure that the function can be custo ...
Initialization
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Steps for using Bluetooth
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The following can be performed using Bluetooth wireless communication:
A portable audio player can be operated and listened to via the
Lexus
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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