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 the TCS/DSC indicator light.

• Inhibits the TCS (engine control) and DSC controls.

POSSIBLE CAUSE

• CAN communication line malfunction between rear body control module (RBCM) and PCM

• 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

• 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

STEP

INSPECTION

ACTION

1

• Verify related Service Bulletins and/or on-line repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

2

• Switch the ignition off, then ON (engine off).

• Perform the DTC Reading Procedure.

  (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].)

• Are any other PENDING CODEs and/or DTCs present?

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

Go to the next step.

3

• Switch the ignition off, then ON (engine off).

• Perform the rear body control module (RBCM) DTC inspection using the M-MDS.

  (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].)

• 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.

4

• 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 8.

No

Go to the next step.

5

• 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 8.

No

Go to the next step.

6

• 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 8.

No

Rear body control module (RBCM) can be considered the cause.

• Inspect the rear body control module (RBCM).

  (See REAR BODY CONTROL MODULE (RBCM) INSPECTION.)

• If there is any malfunction:

• Replace the rear body control module (RBCM), then go to Step 8.

  (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION.)

• If there is no malfunction:

• Go to the next step.

7

• Inspect the instrument cluster.

  (See INSTRUMENT CLUSTER INSPECTION.)

• 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.

8

• Always reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

  (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.5].)

• Perform the KOEO or KOER self test.

  (See KOEO/KOER SELF TEST [SKYACTIV-G 2.5].)

• Is the same DTC present?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM.

  (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

Go to the next step.

No

Go to the next step.

9

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.5].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

DTC troubleshooting completed.