Lexus NX: Vehicle Speed Signal (C1541)
DESCRIPTION
The power steering ECU assembly receives vehicle speed signals from the skid control ECU (brake booster with master cylinder assembly) via CAN communication. The ECU provides appropriate assisting 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. |
| On | After normal confirmation | - |
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 OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM) |
(a) Check if DTC U0129 is output.
Click here
| U0129 is output | .gif) | GO TO CAN COMMUNICATION (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
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| 2. | CHECK OTHER DTC OUTPUT (BRAKE CONTROL SYSTEM) |
(a) Check for brake control system DTCs.
Click here
| DTCs are not output. | | REPLACE POWER STEERING ECU ASSEMBLY |
| DTCs are output. | | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) |
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SEE MORE:
Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) When a malfunction occurs in the lane tracing assist system, a message is displayed on the multi-information display and control is canceled in accordance with the malfunction. Warning Message Cause Fail-safe Operation Conditions to Return to Normal Co
Hybrid system features
Your vehicle is a hybrid vehicle. It has characteristics different from
conventional
vehicles. Be sure you are closely familiar with the characteristics of your
vehicle, and operate it with care.
The hybrid system combines the use of a gasoline engine and an electric
motor (traction motor) a
