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
*1: w/ Smart Key System
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 ignition switch off.
(b) Turn the ignition switch to ON.
(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 (MASTER) |
C | ![]() |
REPLACE BLIND SPOT MONITOR SENSOR RH (SLAVE) |
Toyota CH-R Service Manual > Airbag System: Dtc Check / Clear
DTC CHECK / CLEAR
DTC CHECK (USING SST CHECK WIRE)
(a) Check for DTCs (Current DTCs).
(1) Turn the ignition switch ON, and wait for at least 60 seconds.
(2) Using SST, connect terminals TC and CG of the DLC3.
SST: 09843-18040
NOTICE:
Connect the correct terminals to avoid a malfunction.
(b ...
Toyota CH-R Service Manual > Navigation System: Radio Receiver Power Source Circuit
DESCRIPTION
This is the power source circuit to operate the radio and display receiver assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
procedure.
PROCEDURE
1.
CHECK HARNES ...