Lexus NX: Software Incompatibility with Brake System Control Module Not Programmed (U031851)
DESCRIPTION
If the forward recognition camera cannot verify the vehicle information sent from the skid control ECU (brake booster with master cylinder assembly), the forward recognition camera stores DTC U031851.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| U031851 | Software Incompatibility with Brake System Control Module Not Programmed | The vehicle information sent from the skid control ECU (brake booster with master cylinder assembly) cannot be verified by the forward recognition camera. | Forward recognition camera | Forward recognition camera |
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the forward recognition camera, 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 and a DTC may be stored.
-
When the forward recognition camera is replaced with a new one or the windshield glass is replaced or removed/installed, make sure to perform beam axis adjustment for the forward recognition camera and clear the vehicle control history for each system.
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. | REPLACE FORWARD RECOGNITION CAMERA |
(a) Replace the forward recognition camera with a new one.
Click here
(b) Perform beam axis adjustment for the forward recognition camera.
HINT:
Forward recognition camera adjustment can be performed by using either One Time Recognition or Sequential Recognition.
One Time Recognition: Click here
Sequential Recognition: Click here
|
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| 2. | CLEAR DTC (Radar Cruise2) |
(a) Clear the DTCs.
Click here
| NEXT | .gif) | END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
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Problem Symptoms Table
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Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptom are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspecte
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