| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000021JCX |
| Model Year Start: 2022 | Model: RAV4 | Prod Date Range: [12/2021 - ] |
| Title: PRE-COLLISION: PRE-COLLISION SYSTEM: U041881; Invalid Data Received from Brake System Control Module Invalid Serial Data Received; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ] | ||
|
DTC |
U041881 |
Invalid Data Received from Brake System Control Module Invalid Serial Data Received |
DESCRIPTION
for HV Model:
- The millimeter wave radar sensor assembly receives signals related to the brake control condition from the brake actuator assembly (No. 2 skid control ECU) via the CAN communication line.
- If the millimeter wave radar sensor assembly receives signals from the brake actuator assembly (No. 2 skid control ECU) indicating a brake control system malfunction, the millimeter wave radar sensor assembly stores DTC U041881.
for Gasoline Model:
- The millimeter wave radar sensor assembly receives signals related to the brake control condition from the brake actuator assembly (skid control ECU) via the CAN communication line.
- If the millimeter wave radar sensor assembly receives signals from the brake actuator assembly (skid control ECU) indicating a brake control system malfunction, the millimeter wave radar sensor assembly stores DTC U041881.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
U041881 |
Invalid Data Received from Brake System Control Module Invalid Serial Data Received |
for HV Model:
for Gasoline Model:
|
for HV Model:
for Gasoline Model:
|
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
-
When the millimeter wave radar sensor assembly has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly beam axis alignment and to clear the vehicle control history. Before performing the Driving Adjustment, make sure to read Before Starting Driving Adjustment.
HINT:
Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.
Triangle Target: Click here
![2022 - 2024 MY RAV4 RAV4 HV [12/2021 - ]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)](/t3Portal/stylegraphics/info.gif)
Flat Surface Target: Click here
Driving Adjustment: Click here
PROCEDURE
|
1. |
CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
(a) Check for DTCs.
for HV Model:
Click here
for Gasoline Model:
Click here
Chassis > Brake/EPB > Trouble Codes
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 |
|
| NG |
|
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM for HV Model: Click here
for Gasoline Model: Click here
|
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