Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use these procedures to troubleshoot the power steering system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. | INSPECT BATTERY VOLTAGE |
(a) Turn the engine switch off.
(b) Measure the voltage of the battery.
Standard Voltage:
11 to 14 V
HINT:
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
| 3. | CHECK DTC AND FREEZE FRAME DATA* |
HINT:
Refer to DTC Check / Clear.
Click here .gif)
|
| 4. | PROBLEM SYMPTOM CONFIRMATION |
| Result | Proceed to |
|---|---|
| Symptom does not occur. | A |
| Symptom occurs. | B |
| B | .gif) | GO TO STEP 6 |
|
| 5. | SYMPTOM SIMULATION |
|
| 6. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are not output. | A |
| CAN communication system DTCs are output. | B |
HINT:
- If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.
- If communication to the power steering ECU assembly cannot be established through the Techstream, inspect terminals CANH and CANL of the DLC3 and the power steering ECU assembly, and the IG circuit of the power steering ECU assembly.
| B | | PROCEED TO CAN COMMUNICATION SYSTEM |
|
| 7. | CHECK FOR DTC* |
(a) Check for DTCs.
Click here
HINT:
Refer to Diagnostic Trouble Code Chart when any DTCs are output.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| B | | GO TO STEP 10 |
|
| 8. | 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 10 |
|
| 9. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Refer to Terminals of ECU.
Click here
(b) Refer to Data List / Active Test.
Click here
|
| 10. | REPAIR OR REPLACE |
|
| 11. | CONFIRMATION TEST |
| NEXT | | END |
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA NOTICE:
It is difficult to show the specified values (judgment values) clearly because freeze frame data values change significantly due to differences in measur ...
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK STEERING EFFORT (TORQUE) NOTICE: These service operations may affect the SRS airbags. Be sure to read the precautionary notices concerning the SRS airbag syste ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Theft Deterrent System: Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be dis ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Dynamic Torque Control Awd System: Calibration
CALIBRATION DESCRIPTION (a) When the 4WD ECU assembly is replaced with a known good one from another vehicle or the acceleration sensor (airbag ECU assembly*1 or yaw rate sensor assembly*2) is replaced, perform calibration. (b) Follow the chart to perform calibration. Part Replaced Necessary Op ...
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
0.0099