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.
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:
Click here
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 to the vehicle is correct.
OK:
The part number is correct.
NG | ![]() | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
2. | CHECK DTC |
(a) Turn the engine switch off.
(b) Turn the engine switch on (IG).
(c) 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 LH |
C | ![]() | REPLACE BLIND SPOT MONITOR SENSOR RH |
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