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:
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT FOR COOLANT LEAK (for Inverter Coolant) (a) Remove the inverter reserve tank cap. CAUTION: To avoid the danger of being burned, do not remove the inverter reserve tank cap while the coolant for the inverter is still hot. (b) Install a radiator cap tester
Skid Control ECU Malfunction (C1300)
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) stores this DTC if malfunctions are found in the circuit inside the ECU by self diagnosis. DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note C1300 Skid Control ECU Malfunction
