DTC U0433:00 [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0102h4901700

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.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Illuminates TCS/DSC indicator light.
•  Inhibits the TCS (engine control) and DSC controls.
POSSIBLE CAUSE
•  CAN communication line malfunction between PCM and rear body control module (RBCM)
•  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 REAR BODY CONTROL MODULE (RBCM) DTC
•  Switch the ignition off, then 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.
3
INSPECT PCM CONNECTOR CONDITION
•  Switch the ignition 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 7.
No
Go to the next step.
4
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 7.
No
Go to the next step.
5
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 7.
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 7.
―  If there is no malfunction:
•  Go to the next step.
6
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.
7
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOEO or KOER self test.
•  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.
8
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
No
DTC troubleshooting completed.