Toyota Camry (XV70): Software Incompatibility with Body Control Module "B" (U1331)
DESCRIPTION
This DTC is stored when the destination information of the main body ECU (multiplex network body ECU) does not match that of the blind spot monitor sensors.
Blind Spot Monitor Master|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U1331 | Software Incompatibility with Body Control Module "B" |
Destination information of the main body ECU and blind spot monitor sensor do not match |
|
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U1331 | Software Incompatibility with Body Control Module "B" |
Destination information of the main body ECU and blind spot monitor sensor do not match |
|
CAUTION / NOTICE / HINT
NOTICE:
- When checking for DTCs, make sure that the blind spot monitor system is on.
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
w/ Smart Key System: Click here
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PROCEDURE
|
1. | CONFIRM PART NUMBER (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Check the main body ECU (multiplex network body ECU) part number.
(1) Check if the part number of the main body ECU (multiplex network body ECU) installed on the vehicle is correct.
OK:
The part number is correct.
| NG | .gif) | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
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| 2. |
CHECK DTC |
(a) Clear the DTCs.
Body Electrical > Blind Spot Monitor Master > Clear DTCs Body Electrical > Blind Spot Monitor Slave > Clear DTCs(b) Recheck for DTCs and check if the same DTC is output again.
Body Electrical > Blind Spot Monitor Master > Trouble Codes Body Electrical > Blind Spot Monitor Slave > Trouble Codes|
Result | Proceed to |
|---|---|
|
No DTCs are output | A |
|
DTC U1331 is output ("Blind Spot Monitor Master") |
B |
| DTC U1331 is output ("Blind Spot Monitor Slave") |
C |
| A |
| USE SIMULATION METHOD TO CHECK
|
| B |
| REPLACE BLIND SPOT MONITOR SENSOR RH
|
| C |
| REPLACE BLIND SPOT MONITOR SENSOR LH
|
READ NEXT:
Buzzer does not Sound
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
Inspect the fuses for circuits related to this system be
Power Source Circuit
DESCRIPTION This circuit provides power to operate the blind spot monitor sensor. WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE: Inspect the fuses for circuits related to this system before perfo
Clearance Warning Buzzer
ComponentsCOMPONENTS ILLUSTRATION
*A for 7 Inch Display
*B for 9 Inch Display
*1 CENTER INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY
*2 CENTER INSTRUMENT CLUSTER FINI
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(a) With the speaker installed, check that there is no looseness or other abnormalities.
(b) Check that there is no foreign matter in the speaker, no tears on the speaker cone or other abnormalities.
(c) Measure the res
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