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DTC P243C:00 [PCM (SKYACTIV-D)]

id0102t5585900

Outline

System malfunction location

Diesel particulate filter system: Abnormal diesel particulate filter regeneration interval short distance

Detection condition

•  The following condition is met 3 times

―  Drive distance from previous diesel particulate filter regeneration to next diesel particulate filter regeneration is 50 km {31 mile} or less

―  PM target accumulation amount is high relative to actual PM regeneration amount

Fail-safe

•  Not applicable

Possible cause

•  Soot generation amount is high due to abnormal engine combustion

•  Exhaust gas pressure sensor No.2 malfunction

•  Difference in pressure between before and after passing diesel particulate filter is high

•  Soot cannot be removed by diesel particulate filter regeneration

•  PCM malfunction

System wiring diagram

•  Not applicable

Connector diagram

•  Not applicable

System malfunction location	Diesel particulate filter system: Abnormal diesel particulate filter regeneration interval short distance
Detection condition	• The following condition is met 3 times ― Drive distance from previous diesel particulate filter regeneration to next diesel particulate filter regeneration is 50 km {31 mile} or less ― PM target accumulation amount is high relative to actual PM regeneration amount
Fail-safe	• Not applicable
Possible cause	• Soot generation amount is high due to abnormal engine combustion • Exhaust gas pressure sensor No.2 malfunction • Difference in pressure between before and after passing diesel particulate filter is high • Soot cannot be removed by diesel particulate filter regeneration • PCM malfunction
System wiring diagram	• Not applicable
Connector diagram	• Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

•  Record the freeze frame data/snapshot data.

Note

•  Recording can be facilitated using the screen capture function of the PC.

—

Go to the next step.

2

VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY

•  Verify related Service Bulletins, on-line repair information, or Service Information availability.

•  Is any related Information available?

Yes

Perform repair or diagnosis according to the available information.

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

No

Go to the next step.

3

INSPECT FOR OTHER RELATED DTCs

•  Perform the DTC inspection for the PCM.
(See DTC INSPECTION.)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

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

No

Go to the next step.

4

VERIFY PM ACCUMULATION AMOUNT IN DIESEL PARTICULATE FILTER

•  Display the following PIDs using the M-MDS.
(See DTC INSPECTION.)

―  PM_ACCM_DSD

―  PM_GEN

•  Start the engine and race it at 3,000 rpm until the PM_ACCM_DSD monitored value stabilizes.

•  Is the PM_ACCM_DSD monitored value twice that of the PM_GEN monitored value or more?

Yes

Go to the next step.

No

Go to Step 6.

5

INSPECT EXHAUST GAS PRESSURE SENSOR No.2 FOR MALFUNCTION

•  Inspect the applicable part.
(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8].)

•  Is the part normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

6

PERFORM COMPULSORY DIESEL PARTICULATE FILTER REGENERATION AND VERIFY PM ACCUMULATION AMOUNT

•  Perform compulsory diesel particulate filter regeneration.
(See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 1.8].)

•  Display the following PIDs using the M-MDS.
(See DTC INSPECTION.)

―  PM_ACCM_DSD

•  Has PM_ACCM_DSD lowered to near 0 after compulsory diesel particulate filter regeneration?

Yes

Go to the next step.

No

If compulsory diesel particulate filter regeneration is completed, replace the catalytic converter (diesel particulate filter), then go to repair completion verification.

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

7

PERFORM FUEL INJECTION AMOUNT LEARNING

•  Perform the fuel injection amount learning.
(See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 1.8].)

•  Is the fuel injection amount learning completed?

Yes

Go to the next step.

No

Verify that the implementation conditions for fuel injection amount learning are met, and re-implement the fuel injection amount learning.

•  Fuel injection amount learning is completed:

―  Go to repair completion verification.

•  Fuel injection amount learning cannot be implemented:

―  Go to the next step.

8

VERIFY IF POOR FUEL INJECTION PRESSURE IS POSSIBLE CAUSE

•  Inspect the supply pump and verify the fuel supply line for clogging.
(See SUPPLY PUMP REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

•  Is the fuel supply line normal?

Yes

Replace the fuel injector, then go to repair completion verification.

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

No

Repair or replace the malfunctioning location and perform the repair completion verification.

9

VERIFY IF EGR VALVE MALFUNCTION IS AFFECTED

•  Display the following PIDs using the M-MDS.
(See DTC INSPECTION.)

―  HI_PRES_EGR_VLV_DSD

―  HI_PRES_EGR_VLV_ACT

•  Start the engine, race it at 3,000 rpm, and idle it.

•  Does the HI_PRES_EGR_VLV_DSD monitored value conform to the HI_PRES_EGR_VLV_ACT monitored value?

Yes

Go to the next step.

No

Inspect the HP-EGR control valve.

(See HP-EGR CONTROL VALVE INSPECTION [SKYACTIV-D 1.8].)

•  If the malfunction recurs

―  Repair or replace the malfunctioning location and perform the repair completion verification.
(See HP-EGR CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

•  If there is no malfunction

―  Go to the next step.

10

VERIFY IF INTAKE SHUTTER VALVE MALFUNCTION IS AFFECTED

•  Display the following PIDs using the M-MDS.
(See DTC INSPECTION.)

―  INTAKE_SHUT_VLV_POS

―  INTAKE_SHUT_VLV_COMD

•  Start the engine, race it at 3,000 rpm, and idle it.

•  Does the INTAKE_SHUT_VLV_POS value conform to the INTAKE_SHUT_VLV_COMD value?

Yes

Go to the next step.

No

Inspect the intake shutter valve.

(See INTAKE SHUTTER VALVE INSPECTION [SKYACTIV-D 1.8].)

•  If the malfunction recurs

―  Repair or replace the malfunctioning location and perform the repair completion verification.
(See INTAKE SHUTTER VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

•  If there is no malfunction

―  Go to the next step.

inspection

INSPECT TURBOCHARGER FOR MALFUNCTION

•  Inspect the applicable part.
(See TURBOCHARGER WITH VARIABLE TURBINE GEOMETRY INSPECTION [SKYACTIV-D 1.8].)

•  Is the part normal?

Yes

Replace the fuel injector, then go to the next step.

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

No

Repair or replace the malfunctioning location, then go to the next step.

Repair completion verification 1

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Reconnect all the disconnected connectors.

•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
(See CLEARING DTC.)

•  Display the following PIDs using the M-MDS.
(See DTC INSPECTION.)

―  PM_ACC_DSD

―  PM_GEN

•  Start the engine and race it at 3,000 rpm until the PM_ACC_DSD monitored value stabilizes.

•  Is the PM_ACC_DSD monitored value twice that of the PM_GEN monitored value or more?

Yes

Repeat the inspection from Step 3.

•  If the malfunction recurs, replace the fuel injector, then go to the next step.
(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION • Record the freeze frame data/snapshot data. Note • Recording can be facilitated using the screen capture function of the PC.	—	Go to the next step.
2	VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY • Verify related Service Bulletins, on-line repair information, or Service Information availability. • Is any related Information available?	Yes	Perform repair or diagnosis according to the available information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT FOR OTHER RELATED DTCs • Perform the DTC inspection for the PCM. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D)].)
3		No	Go to the next step.
4	VERIFY PM ACCUMULATION AMOUNT IN DIESEL PARTICULATE FILTER • Display the following PIDs using the M-MDS. (See DTC INSPECTION.) ― PM_ACCM_DSD ― PM_GEN • Start the engine and race it at 3,000 rpm until the PM_ACCM_DSD monitored value stabilizes. • Is the PM_ACCM_DSD monitored value twice that of the PM_GEN monitored value or more?	Yes	Go to the next step.
4		No	Go to Step 6.
5	INSPECT EXHAUST GAS PRESSURE SENSOR No.2 FOR MALFUNCTION • Inspect the applicable part. (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 1.8].) • Is the part normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See EXHAUST GAS PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
6	PERFORM COMPULSORY DIESEL PARTICULATE FILTER REGENERATION AND VERIFY PM ACCUMULATION AMOUNT • Perform compulsory diesel particulate filter regeneration. (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 1.8].) • Display the following PIDs using the M-MDS. (See DTC INSPECTION.) ― PM_ACCM_DSD • Has PM_ACCM_DSD lowered to near 0 after compulsory diesel particulate filter regeneration?	Yes	Go to the next step.
6		No	If compulsory diesel particulate filter regeneration is completed, replace the catalytic converter (diesel particulate filter), then go to repair completion verification. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
7	PERFORM FUEL INJECTION AMOUNT LEARNING • Perform the fuel injection amount learning. (See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 1.8].) • Is the fuel injection amount learning completed?	Yes	Go to the next step.
7		No	Verify that the implementation conditions for fuel injection amount learning are met, and re-implement the fuel injection amount learning. • Fuel injection amount learning is completed: ― Go to repair completion verification. • Fuel injection amount learning cannot be implemented: ― Go to the next step.
8	VERIFY IF POOR FUEL INJECTION PRESSURE IS POSSIBLE CAUSE • Inspect the supply pump and verify the fuel supply line for clogging. (See SUPPLY PUMP REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • Is the fuel supply line normal?	Yes	Replace the fuel injector, then go to repair completion verification. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
8		No	Repair or replace the malfunctioning location and perform the repair completion verification.
9	VERIFY IF EGR VALVE MALFUNCTION IS AFFECTED • Display the following PIDs using the M-MDS. (See DTC INSPECTION.) ― HI_PRES_EGR_VLV_DSD ― HI_PRES_EGR_VLV_ACT • Start the engine, race it at 3,000 rpm, and idle it. • Does the HI_PRES_EGR_VLV_DSD monitored value conform to the HI_PRES_EGR_VLV_ACT monitored value?	Yes	Go to the next step.
9		No	Inspect the HP-EGR control valve. (See HP-EGR CONTROL VALVE INSPECTION [SKYACTIV-D 1.8].) • If the malfunction recurs ― Repair or replace the malfunctioning location and perform the repair completion verification. (See HP-EGR CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • If there is no malfunction ― Go to the next step.
10	VERIFY IF INTAKE SHUTTER VALVE MALFUNCTION IS AFFECTED • Display the following PIDs using the M-MDS. (See DTC INSPECTION.) ― INTAKE_SHUT_VLV_POS ― INTAKE_SHUT_VLV_COMD • Start the engine, race it at 3,000 rpm, and idle it. • Does the INTAKE_SHUT_VLV_POS value conform to the INTAKE_SHUT_VLV_COMD value?	Yes	Go to the next step.
10		No	Inspect the intake shutter valve. (See INTAKE SHUTTER VALVE INSPECTION [SKYACTIV-D 1.8].) • If the malfunction recurs ― Repair or replace the malfunctioning location and perform the repair completion verification. (See INTAKE SHUTTER VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.8].) • If there is no malfunction ― Go to the next step.
inspection	INSPECT TURBOCHARGER FOR MALFUNCTION • Inspect the applicable part. (See TURBOCHARGER WITH VARIABLE TURBINE GEOMETRY INSPECTION [SKYACTIV-D 1.8].) • Is the part normal?	Yes	Replace the fuel injector, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
inspection		No	Repair or replace the malfunctioning location, then go to the next step.
Repair completion verification 1	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC.) • Display the following PIDs using the M-MDS. (See DTC INSPECTION.) ― PM_ACC_DSD ― PM_GEN • Start the engine and race it at 3,000 rpm until the PM_ACC_DSD monitored value stabilizes. • Is the PM_ACC_DSD monitored value twice that of the PM_GEN monitored value or more?	Yes	Repeat the inspection from Step 3. • If the malfunction recurs, replace the fuel injector, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.