Lexus ES: 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 actuator assembly), the forward recognition camera stores DTC U031851.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from |
|---|---|---|---|---|---|
| U031851 | Software Incompatibility with Brake System Control Module Not Programmed | The vehicle information sent from the skid control ECU (brake actuator assembly) cannot be verified by the forward recognition camera. | Forward recognition camera | Does not come on | Radar Cruise2 |
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.
-
If the forward recognition camera has been replaced with a new one, it is necessary 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. | REPLACE FORWARD RECOGNITION CAMERA |
(a) Replace the forward recognition camera with a new one.
Click here
|
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| 2. | CLEAR DTC |
(a) Clear the DTCs.
Powertrain > Radar Cruise2 > Clear DTCs| NEXT | .gif) | END |
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SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registration. Click here HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed
Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE SHIFT POSITION INDICATOR (a) Disengage the 2 clamps to disconnect the wire harness. (b) Remove the 2 screws. (c) Disengage the claw and guide and remove the shift position indicator from the rear upper console panel sub-assembly.
