Lexus NX: Vehicle Speed Signal (C1541)
DESCRIPTION
The power steering ECU assembly receives vehicle speed signals from the skid control ECU 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 |
|---|---|---|---|---|---|
| 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.
Click here .gif)
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) |
|
.gif)
| 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) |
READ NEXT:
IG Power Supply Voltage (C1551)
DESCRIPTION The power steering ECU assembly distinguishes the power switch status as on (IG) or off through the IG power source circuit. DTC No. Detection Item DTC Detection Condition Trouble
PIG Power Supply Voltage (C1552,C1554)
DESCRIPTION When a problem occurs in the power steering system, the power source relay circuit is shut off to stop the power assist. DTC No. Detection Item DTC Detection Condition Trouble Are
Error in Matching of ECUs (C1567)
DESCRIPTION Based on the ECM signal, the power steering ECU assembly determines if the correct type of ECM is installed. DTC No. Detection Item DTC Detection Condition Trouble Area Warning
SEE MORE:
Display Disconnected (B15D6)
DESCRIPTION The multi-display assembly and radio receiver assembly are connected by the AVC-LAN communication line. This DTC is stored when an AVC-LAN communication error occurs between the multi-display assembly and radio receiver assembly. DTC No. Detection Item DTC Detection Condition Tr
Remote Service Malfunction
PROCEDURE 1. CHECK CAN COMMUNICATION SYSTEM (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Bus Check. Click here (e) Check that all ECUs and sensors that use CAN communication are connected. Result
