Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Vehicle Speed Signal (C1541)
DESCRIPTION
The power steering ECU assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The ECU provides appropriate assist force in accordance with the vehicle speed based on the signals.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition | Note |
|---|---|---|---|---|---|---|
| C1541 | Vehicle Speed Signal | Vehicle speed signals via CAN communication are cut off for 3 seconds or more. |
| EPS warning light: Comes on | The ECU judges the system has returned to normal or the power switch is turned on (IG) again | - |
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
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PROCEDURE
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Check if DTC U0129 is output.
Click here
| Result | Proceed to |
|---|---|
| DTC U0129 is not output. | A |
| DTC U0129 is output. | B |
| B | .gif) | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
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| 2. | CHECK BRAKE CONTROL SYSTEM |
(a) Using the Techstream, check for DTCs and confirm that there are no malfunctions in the brake control system.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| A | | REPLACE POWER STEERING ECU ASSEMBLY |
| B | | GO TO BRAKE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
Short in Motor Circuit (C1521-C1523,C1528,C1531-C1555)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note C1521 Short in Motor Circuit Motor overcurrent Power s ...
IG Power Supply Voltage (C1551)
DESCRIPTION The power steering ECU assembly distinguishes the engine switch status as on (IG) or off through the IG power source circuit. DTC No. Detection Item DTC Detection Condition Troubl ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Mirror (ext): Outer Rear View Mirror Cover
ComponentsCOMPONENTS ILLUSTRATION *1 NO. 1 OUTER MIRROR COVER *2 OUTER MIRROR RemovalREMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. REMOVE OUTER MIRROR Click here 2. REMOVE NO. ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Power Back Door System (w/ Outside Door Control Switch): Initialization
INITIALIZATION INITIALIZE MULTIPLEX NETWORK DOOR ECU NOTICE: Initialization of the multiplex network door ECU (back door initial position learning) is necessary if any of the following have been performed with the back door open.
The cable is disconnected from the negative (-) battery terminal.
...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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