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 |
|
| 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) 2016-2026 Repair Manual > Parking Assist Ecu: Installation
INSTALLATION PROCEDURE 1. INSTALL PARKING ASSIST ECU (a) Install the parking assist ECU with the bolt and nut. (b) Connect each connector. 2. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY Click here 3. INSTALL NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY Click here 4. INSTALL COWL SIDE TRIM BOARD R ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Front Camera System: Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U014087)
DESCRIPTION When a malfunction is detected between various ECUs and sensors, these DTCs are stored. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communication with ECM/PCM "A" Missing Message While the vehicle is being driven at 1 km/h or 1 mph or more, a ...
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
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- Interior features
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- When trouble arises
- Vehicle specifications
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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