HIGH OIL CONSUMPTION/LEAKAGE [SKYACTIV-D]

id0103s5890300

Troubleshooting item

HIGH OIL CONSUMPTION/LEAKAGE

Description

•  Oil consumption is excessive.

Possible cause

•  PCM DTC is stored.

•  Mechanical (engine) malfunction

―  Improper installation of turbocharger

―  Blow-by gas passage clogging

―  Piston ring malfunction

―  Engine oil leakage from oil seal

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

Troubleshooting item	HIGH OIL CONSUMPTION/LEAKAGE
Description	• Oil consumption is excessive.
Possible cause	• PCM DTC is stored. • Mechanical (engine) malfunction ― Improper installation of turbocharger ― Blow-by gas passage clogging ― Piston ring malfunction ― Engine oil leakage from oil seal
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.
(See DTC INSPECTION.)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-D)].)

No

Go to the next step.

2

INSPECT BLOW-BY GAS PASSAGE FOR CLOGGING

•  Switch the ignition off.

•  Remove the breather hose.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

•  Visually inspect the blow-by gas passage for clogging.

•  Is there any malfunction?

Yes

Repair or replace the malfunctioning part according to the inspection results, then go to repair completion verification.

No

Go to the next step.

3

VERIFY TURBOCHARGER INSTALLATION CONDITION

•  Verify the turbocharger installation conditions.
(See TURBOCHARGER WITH VARIABLE TURBINE GEOMETRY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

•  Are the turbocharger installation conditions normal?

Yes

Go to the next step.

No

Install the turbocharger properly, then go to repair completion verification.

(See TURBOCHARGER WITH VARIABLE TURBINE GEOMETRY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

4

INSPECT FOR MALFUNCTION DUE TO INTERNAL ENGINE WEAR, DAMAGE

•  Inspect for the following engine internal parts:

―  Cylinder

―  Piston ring

―  Front oil seal

―  Rear oil seal

•  Are all items normal?

Yes

Engine internal parts are normal.

•  If other driveability symptoms are present:

―  Return to the diagnostic index to service additional symptoms.
(See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-D].)

No

Repair or replace the malfunctioning part according to the inspection results, 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.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

•  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.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

No

Replace the PCM.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Step	Inspection	Results	Action
1	VERIFY PCM DTC • Retrieve PCM DTCs using the M-MDS. (See DTC INSPECTION.) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-D)].)
1		No	Go to the next step.
2	INSPECT BLOW-BY GAS PASSAGE FOR CLOGGING • Switch the ignition off. • Remove the breather hose. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • Visually inspect the blow-by gas passage for clogging. • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to repair completion verification.
2		No	Go to the next step.
3	VERIFY TURBOCHARGER INSTALLATION CONDITION • Verify the turbocharger installation conditions. (See TURBOCHARGER WITH VARIABLE TURBINE GEOMETRY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • Are the turbocharger installation conditions normal?	Yes	Go to the next step.
3		No	Install the turbocharger properly, then go to repair completion verification. (See TURBOCHARGER WITH VARIABLE TURBINE GEOMETRY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
4	INSPECT FOR MALFUNCTION DUE TO INTERNAL ENGINE WEAR, DAMAGE • Inspect for the following engine internal parts: ― Cylinder ― Piston ring ― Front oil seal ― Rear oil seal • Are all items normal?	Yes	Engine internal parts are normal. • If other driveability symptoms are present: ― Return to the diagnostic index to service additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-D].)
4		No	Repair or replace the malfunctioning part according to the inspection results, 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)
Repair completion verification 1		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) • 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. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 2		No	Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)