Toyota Corolla Cross: Lost Communication with Side Obstacle Detection Control Module "B" Missing Message (U023387)
DESCRIPTION
This DTC is stored when the blind spot monitor sensor RH (A) judges that there is a communication problem with the blind spot monitor sensor LH (B).
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
U023387 |
Lost Communication with Side Obstacle Detection Control Module "B" Missing Message |
The blind spot monitor sensor RH (A) cannot receive signals from the blind spot monitor sensor LH (B) |
|
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
HINT:
- Operating the ignition switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
PROCEDURE
|
1. |
CHECK DTC OUTPUT |
(a) Reconnect the cable to the negative (-) auxiliary battery terminal.
(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON.
(d) Check for DTCs.
Body Electrical > Blind Spot Monitor "A" > Trouble Codes|
Result |
Proceed to |
|---|---|
|
U023387 is output |
A |
|
DTCs are not output |
B |
|
None of the above conditions are met |
C |
| B | .gif)
|
USE SIMULATION METHOD TO CHECK |
| C |
|
GO TO DTC CHART |
|
.gif)
|
2. |
REPLACE BLIND SPOT MONITOR SENSOR LH (B) |
HINT:
Click here .gif)
|
|
3. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Blind Spot Monitor "A" > Clear DTCs
|
|
4. |
CHECK DTC OUTPUT |
(a) Check for DTCs.
Body Electrical > Blind Spot Monitor "A" > Trouble Codes|
Result |
Proceed to |
|---|---|
|
U023387 is output |
A |
|
DTCs are not output |
B |
|
None of the above conditions are met |
C |
| A |
|
REPLACE BLIND SPOT MONITOR SENSOR RH (A)
|
| B |
|
END (BLIND SPOT MONITOR SENSOR LH (B) WAS DEFECTIVE) |
| C |
|
GO TO DTC CHART |
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DESCRIPTION
This DTC is stored when the destination information of the main
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DTC No.
Power Source Circuit
DESCRIPTION
This circuit provides power to operate the blind spot monitor
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CAUTION / NOTICE / HINT
HINT:
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