Last Modified: 11-20-2023 |
6.11:8.1.0 |
Doc ID: RM100000001RX3Y |
Model Year Start: 2021 |
Model: Camry HV |
Prod Date Range: [10/2020 -
] |
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: U041881; Invalid Data Received from Brake System Control Module Invalid Serial Data Received; 2021 - 2024 MY Camry HV [10/2020 - ] |
DTC
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U041881
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Invalid Data Received from Brake System Control Module Invalid Serial Data Received
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DESCRIPTION
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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.
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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.
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Detection Item
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DTC Detection Condition
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Trouble Area
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U041881
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Invalid Data Received from Brake System Control Module Invalid Serial Data Received
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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.
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Electronically controlled brake system
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Forward recognition camera
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CAUTION / NOTICE / HINT
NOTICE:
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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 the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
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When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to read Before Starting Adjustment, then perform optical axis alignment for the forward recognition camera and clear the vehicle control history for each system.
HINT:
Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.
One Time Recognition: Click here
Sequential Recognition: Click here
Driving Adjustment: Click here
PROCEDURE
1.
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CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM
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(a) Check the DTCs.
Chassis > ABS/VSC/TRAC > 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.
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