EXCESSIVE BLACK SMOKE [SKYACTIV-D]


id0103s5109400

Troubleshooting item

EXCESSIVE BLACK SMOKE

Description
•  Compared to previously, black smoke in the exhaust gas abnormally high.
Possible cause
•  PCM DTC is stored.
•  Diesel particulate filter (in catalytic converter) deficiency
System wiring diagram
•  Not applicable
Connector diagram
•  Not applicable


Diagnostic Procedure

Step

Inspection

Results

Action

1
VERIFY PCM DTC
•  Retrieve PCM DTCs using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
INSPECT DPF (IN CATALYTIC CONVERTER) FOR MALFUNCTION DUE TO DEFICIENCY
•  Inspect the diesel particulate filter.
•  Is the diesel particulate filter normal?
Yes
Go to the next step.
No
Diesel particulate filter deficiency in the catalytic converter can be considered.
Replace the catalytic converter, then go to the next step.
Repair completion verification 1
VERIFY THAT VEHICLE IS REPAIRED
•  Install/connect the part removed/disconnected during the troubleshooting procedure.
•  Has the malfunction symptom been eliminated?
Yes
Complete the symptom troubleshooting. (Explain contents of repair to customer)
No
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
•  If the CAN communication is normal, perform the diagnosis from Step 1.
―  If the malfunction recurs, go to the next step.
Repair completion verification 2
VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING
•  Verify repair information and verify that there is a new calibration in the PCM.
•  Is there a new calibration in the PCM?
Yes
Perform the PCM reprogramming and verify if the malfunction symptom was corrected.
•  If the malfunction recurs, replace the PCM.
No
Replace the PCM.