Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 2. | CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer and confirm the problem.
Click here .gif)
|
| 3. | CHECK DTC AND FREEZE FRAME DATA* |
(a) Check and record DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
(b) Clear the DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
(c) Reconfirm the DTCs.
(1) Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.
for DTC Check / Clear: Click here
for Freeze Frame Data: Click here
HINT:
-
When CAN communication system DTCs are output, repair the CAN communication system first.
Click here
-
If DTC U010087, U012587, U012687 and/or U015187 are among the CAN communication DTCs that are output, first use the Data List to check for a momentary open circuit.
Click here
-
If the Techstream cannot communicate with the skid control ECU (brake actuator assembly), inspect the CAN communication system.
Click here
-
If there is no response from the skid control ECU (brake actuator assembly), inspect the +BS and/or IG1 circuit of the skid control ECU (brake actuator assembly).
C137BA2: Click here
C137BA3: Click here
| Result | Proceed to |
|---|---|
| DTCs are output. | A |
| DTCs are not output. (Problem symptom does not occur.) | B |
| DTCs are not output. (Problem symptom occurs.) | C |
| B |  | GO TO STEP 5 |
| C | | GO TO STEP 6 |
|
| 4. | DIAGNOSTIC TROUBLE CODE CHART |
(a) Proceed to Diagnostic Trouble Code Chart.
Click here
| NEXT | | GO TO STEP 7 |
| 5. | SYMPTOM SIMULATION |
(a) Proceed to How to Proceed with Troubleshooting.
Click here
| NEXT | | GO TO STEP 6 |
| 6. | PROBLEM SYMPTOMS TABLE |
(a) Proceed to Problem Symptoms Table.
Click here
|
| 7. | CIRCUIT INSPECTION* |
|
| 8. | IDENTIFICATION OF PROBLEM |
|
| 9. | REPAIR OR REPLACEMENT |
|
| 10. | RECONFIRM DTC* |
(a) Clear the DTCs.
Click here
(b) Check if the same DTCs are output.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| B | | REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
| 11. | CONFIRMATION TEST* |
| NEXT | | END |
System Diagram
SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Skid control ECU (Brake actuator assembly) Steering angle sensor Steering angle sensor r ...
Calibration
CALIBRATION DESCRIPTION (a) Refer to the table below and then perform the necessary operation according to the part to be replaced in order to perform calibration. Parts to be Replaced / Operation ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Glove Box Light: Installation
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Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Immobiliser System: ID BOX EEPROM Malfunction (B2790)
DESCRIPTION When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2790 ID BOX EEPROM Malfunction An internal malfunction occur ...
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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