Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the front power seat control system (w/ Memory).
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer to confirm the problem.
Click here .gif)
|
| 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. | INSPECT 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 | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs.
Click here
| Result | Proceed to |
|---|---|
| LIN DTCs are not output | A |
| LIN DTCs are output | B |
| B | | GO TO LIN COMMUNICATION SYSTEM |
|
| 6. | CHECK FOR DTC* |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 7. | 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 9 |
|
| 8. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check
Click here
(b) Data List / Active Test
Click here
(c) Terminals of ECU
Click here
(d) Inspection
|
| 9. | REPAIR OR REPLACE |
|
| 10. | CONFIRMATION TEST |
| NEXT | | END |
System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line ECM Main Body ECU (Multiplex Network Body ECU)
Transmission information
Shift position P signal
CAN Ou ...
Operation Check
OPERATION CHECK CHECK POWER SEAT FUNCTION (a) Check the basic functions. *a Slide Function *b Reclining Function *c Lifter Function *d Front Vertical Function *e Lumbar S ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Transmission Control Cable: Installation
INSTALLATION PROCEDURE 1. INSTALL TRANSMISSION CONTROL CABLE ASSEMBLY NOTICE: Before installing the transmission control cable assembly, check that the park/neutral position switch assembly and the shift lever are in neutral. (a) Pass the transmission control cable assembly from the cabin to the eng ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Meter / Gauge System: Speedometer Malfunction
DESCRIPTION The combination meter assembly receives vehicle speed signals from the brake actuator assembly (skid control ECU) via CAN communication. The speed sensor detects the wheel speed and sends the appropriate signals to the brake actuator assembly (skid control ECU). The brake actuator assemb ...
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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