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 intelligent clearance sonar system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.
|
| 4. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here .gif)
| 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 |
|
| 5. | PROBLEM SYMPTOM CONFIRMATION |
|
| 6. | CHECK DTC* |
(a) Check for DTCs.
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 8 |
| C | | GO TO STEP 9 |
|
| 7. | DIAGNOSTIC TROUBLE CODE CHART (INTELLIGENT CLEARANCE SONAR SYSTEM) |
(a) Refer to Diagnostic Trouble Code Chart.
Click here
NOTICE:
The clearance warning ECU assembly outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the intelligent clearance sonar system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.
| System | Proceed to |
|---|---|
| Intuitive Parking Assist System (w/ Intelligent Clearance Sonar System) | |
| NEXT | | GO TO STEP 11 |
| 8. | SYMPTOM SIMULATION |
(a) Refer to Symptom Simulation.
Click here
|
| 9. | 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 11 |
|
| 10. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Operation Check
Click here
(b) Terminals of ECU
Click here
(c) Data List / Active Test
Click here
|
| 11. | CIRCUIT INSPECTION |
|
| 12. | IDENTIFICATION OF PROBLEM |
|
| 13. | REPAIR OR REPLACE |
|
| 14. | CONFIRMATION TEST |
| NEXT | | END |
System Diagram
SYSTEM DIAGRAM ...
Operation Check
OPERATION CHECK ICS OFF INDICATOR LIGHT OPERATION CHECK (a) Turn the engine switch on (IG). (b) Turn the intelligent clearance sonar system off and confirm that the ICS OFF indicator in the combinatio ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Can Communication System: Open in Bus 1 Main Bus Line
DESCRIPTION There may be an open circuit in one of the bus 1 main lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the network gateway ECU is 70 Ω or higher. Symptom Trouble Area Resistance between terminals 23 (CA1H) and 8 (CA1L) of network gateway ECU is 70 Ω or hig ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Clearance Warning Ecu: Installation
INSTALLATION PROCEDURE 1. INSTALL CLEARANCE WARNING ECU ASSEMBLY (a) Engage the 2 claws to install the clearance warning ECU assembly as shown in the illustration. Install in this Direction 2. INSTALL ECU INTEGRATION BOX RH (a) Install the ECU integration box RH with the bolt and 2 nuts. T ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
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- Instrument cluster
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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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