Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer and confirm the problem.
Click here .gif)
|
| 3. | INSPECT 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.
|
| 4. | CHECK DTC AND FREEZE FRAME DATA* |
(a) Check and record DTCs and freeze frame data.
Chassis > Brake/EPB > Trouble Codes(b) Clear the DTCs and freeze frame data.
Chassis > Brake/EPB > Clear DTCs(c) Recheck for DTCs.
(1) Reconfirm the DTCs based on the recorded DTCs and freeze frame data.
Chassis > Brake/EPB > Trouble Codes(2) Try to reproduce the problem symptoms based on the recorded DTCs and freeze frame data, and then check if the DTCs are output again.
| Result | Proceed to |
|---|---|
| DTCs are not output (Problem symptom occurs.) | A |
| DTCs are output | B |
| DTCs are not output (Problem symptom does not occur.) | C |
HINT:
- Refer to Diagnostic Trouble Code Chart if any DTCs are output.
- When DTCs indicating a CAN communication system malfunction are output, first troubleshoot and repair the CAN communication system.
| B | .gif) | GO TO DIAGNOSTIC TROUBLE CODE CHART |
| C | | USE SIMULATION METHOD TO CHECK |
|
| 5. | PROBLEM SYMPTOMS TABLE |
(a) Proceed 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 7 |
|
| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Refer to Terminals of ECU.
Click here
(b) Refer to Data List / Active Test.
Click here
|
| 7. | REPAIR OR REPLACE |
|
| 8. | CONFIRMATION TEST |
| NEXT | | END |
System Diagram
SYSTEM DIAGRAM ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Can Communication System: Open in Bus 4 Main Bus Line
DESCRIPTION There may be an open circuit in one of the bus 4 main lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the network gateway ECU is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 22 (CA2H) and 7 (CA2L) of network gateway ECU is 70 Ω or hig ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Airbag System: Pressure Sensor Difference for Front Door (B166A)
DESCRIPTION The door side airbag sensor LH and door side airbag sensor RH detect impacts to the vehicle through changes in pressure inside the front doors caused by deformation of the outer side of the front doors and send signals to the airbag sensor assembly. Based on the signals sent by the door ...
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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