Lexus NX: Invalid Data Received from Brake System Control Module Invalid Serial Data Received (U041881)
DESCRIPTION
- The forward recognition camera receives signals from the skid control ECU (brake booster with master cylinder assembly) corresponding to the brake control status via the CAN communication line.
- When a brake control system malfunction signal is received from the skid control ECU (brake booster with master cylinder assembly), the forward recognition camera outputs U041881.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U041881 | Invalid Data Received from Brake System Control Module Invalid Serial Data Received | Once 3 seconds elapse after turning the power switch on (IG), the forward recognition camera receives a brake control system malfunction signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more. |
|
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
-
If the forward recognition camera has been replaced with a new one, be sure to perform forward recognition camera adjustment.
HINT:
Forward recognition camera adjustment can be performed by using either "One Time Recognition" or "Sequential Recognition".
One Time Recognition:
Click here
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Sequential Recognition:
Click here
PROCEDURE
| 1. | CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
(a) Check the DTCs.
Click here
OK:
Electronically controlled brake system DTCs are not output.
HINT:
If U041881 is output in the pre-collision system, electronically controlled brake system DTCs may also have been output. Check the electronically controlled brake system first.
| OK | .gif) | REPLACE FORWARD RECOGNITION CAMERA |
| NG | | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
READ NEXT:
Pre-collision System Warning Buzzer
ComponentsCOMPONENTS ILLUSTRATION *1 RADIO RECEIVER ASSEMBLY *2 SKID CONTROL BUZZER ASSEMBLY (PRE-COLLISION SYSTEM WARNING BUZZER) InspectionINSPECTION PROCEDURE 1. INSPECT SKID CONTROL
SEE MORE:
Operation Check
OPERATION CHECK INSPECT INDICATOR/WARNING LIGHT (a) Check the following indicators and warning lights. Indicator/Warning Light Switch Condition Specified Condition
*1: w/ Pre-collision System
*2: w/ Automatic High Beam System Brake warning light Power switch off → on (IG) Comes
Components
COMPONENTS ILLUSTRATION *1 INVERTER RESERVOIR ASSEMBLY *2 NO. 1 ENGINE COVER SUB-ASSEMBLY *3 WIRE HARNESS - - N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 FRONT EXHAUST PIPE ASSEMBLY *2 NO. 1 ENGINE UNDER COVER ASSEMBLY *3 CENTER EXHAU
