DTC U0433:00 [SKYACTIV-D 2.2]

id0102s4901700

DTC U0433:00

Abnormal message from rear body control module (RBCM)
DETECTION CONDITION
•  Correct data cannot be received from rear body control module (RBCM).
Diagnostic support note
•  This is a continuous monitor (other).
•  The check engine light does not illuminate.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
•  The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
Not applicable
POSSIBLE CAUSE
•  CAN communication line between rear body control module (RBCM) and PCM malfunction
―  Rear body control module (RBCM) terminal 3E—Instrument cluster terminal C
―  Rear body control module (RBCM) terminal 3G—Instrument cluster terminal E
―  Instrument cluster terminal B—Front body control module (FBCM) terminal 2K
―  Instrument cluster terminal D—Front body control module (FBCM) terminal 2I
―  Front body control module (FBCM) terminal 2P—PCM terminal 2AK
―  Front body control module (FBCM) terminal 2N—PCM terminal 2AL
•  Front body control module (FBCM) malfunction
•  PCM connector or terminals malfunction
•  Instrument cluster connector or terminals malfunction
•  Rear body control module (RBCM) connector or terminals malfunction
•  Rear body control module (RBCM) malfunction
•  Instrument cluster malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
VERIFY DTC FOR MODULE COMMUNICATION
•  Switch the ignition to off, then to ON (engine off).
•  Perform the DTC Reading Procedure.
•  Are any other PENDING CODEs and/or DTCs present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE [SKYACTIV-D 2.2].)
No
Go to the next step.
3
CONFIRM FRONT BODY CONTROL MODULE (FBCM) DTC
•  Perform the front body control module (FBCM) DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
No
Go to the next step.
4
CONFIRM REAR BODY CONTROL MODULE (RBCM) DTC
•  Switch the ignition to off, then to ON (engine off).
•  Perform the rear body control module (RBCM) DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [REAR BODY CONTROL MODULE (RBCM)].)
No
Go to the next step.
5
INSPECT PCM CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
6
INSPECT INSTRUMENT CLUSTER CONNECTOR CONDITION
•  Disconnect the instrument cluster connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
7
INSPECT REAR BODY CONTROL MODULE (RBCM) CONNECTOR CONDITION
•  Disconnect the rear body control module (RBCM) connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Rear body control module (RBCM) can be considered the cause.
•  Inspect the rear body control module (RBCM).
―  If there is any malfunction:
•  Replace the rear body control module (RBCM), then go to Step 9.
―  If there is no malfunction:
•  Go to the next step.
8
INSPECT INSTRUMENT CLUSTER
•  Inspect the instrument cluster.
•  Is there any malfunction?
Yes
Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No
Go to the next step.
9
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the DTC Reading Procedure.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-D 2.2].)
No
DTC troubleshooting completed.