Toyota Camry (XV70): 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 |
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 |
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.
- 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
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Sequential Recognition: Click here
Driving Adjustment: Click here
PROCEDURE
|
1. | REPLACE FRONT CAMERA SYSTEM |
(a) Replace the forward recognition camera with a new one.
Click here
(b) Perform forward recognition camera adjustment.
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
|
.gif)
| 2. |
CLEAR DTC (Radar Cruise2) |
(a) Clear the DTCs.
Powertrain > Radar Cruise2 > Clear DTCs| NEXT | .gif) | END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) |
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Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT
NOTICE:
Do not disconnect the tube shown in the illustration when disassembling the fuel suction tube with pump and gauge assembly. Doing so will cause reassembly of the fuel suction tube with pump and gauge assembly to be impossible as the tube is pressed i
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.
System Name See Procedure
Lane Tracing Assist System
