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 |
|
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|
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 |
READ NEXT:
Software Incompatibility with Body Control Module Not Programmed (U032251,U032257)
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.
Power Source Circuit
DESCRIPTION
This circuit provides power to operate the blind spot monitor
sensor.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Inspect the fuses for circuits related to this system before per
SEE MORE:
Right Frontal Restraints Sensor Signal Above Allowable Range (B009585)
DESCRIPTION
DTC No. Detection Item
DTC Detection Condition Trouble Area
Warning Indicate Test Mode / Check Mode
B009585 Right Frontal Restraints Sensor Signal Above Allowable Range
One of the following conditions is met:
Front airbag sensor RH malfuncti
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Before performing troubleshooting for the front radar sensor system,
perform troubleshooting for the front camera system.
Click here
*: Use the GTS.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
