DTC P2002:00 [SKYACTIV-D 2.2]

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Note

• To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.

Details On DTCs

DESCRIPTION

Diesel particulate filter function decreased

DETECTION CONDITION

Determination conditions

•  The difference in the pressure before and after passing the diesel particulate filter of less than the specified value is detected for 2s.

Preconditions

•  All of the following conditions are met for 0.16 s:

―  APP: 0.05% or less

―  Fuel injection amount control: during fuel cut

―  Amount of exhaust gas: 1.1 m³/min or more

―  Shift lever drive position (MTX)

―  CPP switch: OFF (MTX)

―  Selector lever: Position other than P, N, R position (ATX)

―  300 s or more elapsed since DPF regeneration control stopped

―  Engine coolant temperature: 70 °C {158 °F} or more

―  Intake air temperature: –10—110 °C {14—230 °F}

―  Barometric pressure: 70—110 kPa {0.72—1.12 kgf/cm², 11.0—15.9 psi}

―  Amount of change in engine speed: 0.65 rpm for 16 ms

―  Amount of change in exhaust gas: 0.03 m³/min for 16 ms

―  Amount of change in pressure applied to diesel particulate filter: 0.01 kPa {0.0001 kgf/cm², 0.001 psi} for 16 ms

―  The traveled distance after DPF regeneration exceeds 21 km {14 mile} and 10 s have elapsed with diesel particulate filter temperature of 350 °C {662 °F} or more, or traveled distance exceeds 500 km {311 mile}.

―  Traveled distance after DPF regeneration exceeds 1,000 km {621.4 mile} or accumulated PM amount 3.4—6.5 g/l {0.22—0.40 lb/ft³}

Drive cycle

•  2

Self test type

•  CMDTC self test

Sensor used

•  Exhaust gas pressure sensor No.2

FAIL-SAFE FUNCTION

•  Not applicable

VEHICLE STATUS WHEN DTCs ARE OUTPUT

•  Check engine light is illuminated

POSSIBLE CAUSE

•  Erratic signal to PCM

―  Input signal part connector or terminals malfunction

―  Input signal part related circuit malfunction

•  Exhaust gas leakage from exhaust system

•  Pipe between exhaust gas pressure sensor No.2 and catalytic converter restriction and/or damaged or improper routing

•  Exhaust gas pressure sensor No.2 malfunction

•  Catalytic converter or diesel particulate filter malfunction (deformation, damage)

•  PCM malfunction

DESCRIPTION	Diesel particulate filter function decreased
DETECTION CONDITION	Determination conditions	• The difference in the pressure before and after passing the diesel particulate filter of less than the specified value is detected for 2s.
Preconditions	• All of the following conditions are met for 0.16 s: ― APP: 0.05% or less ― Fuel injection amount control: during fuel cut ― Amount of exhaust gas: 1.1 m³/min or more ― Shift lever drive position (MTX) ― CPP switch: OFF (MTX) ― Selector lever: Position other than P, N, R position (ATX) ― 300 s or more elapsed since DPF regeneration control stopped ― Engine coolant temperature: 70 °C {158 °F} or more ― Intake air temperature: –10—110 °C {14—230 °F} ― Barometric pressure: 70—110 kPa {0.72—1.12 kgf/cm², 11.0—15.9 psi} ― Amount of change in engine speed: 0.65 rpm for 16 ms ― Amount of change in exhaust gas: 0.03 m³/min for 16 ms ― Amount of change in pressure applied to diesel particulate filter: 0.01 kPa {0.0001 kgf/cm², 0.001 psi} for 16 ms ― The traveled distance after DPF regeneration exceeds 21 km {14 mile} and 10 s have elapsed with diesel particulate filter temperature of 350 °C {662 °F} or more, or traveled distance exceeds 500 km {311 mile}. ― Traveled distance after DPF regeneration exceeds 1,000 km {621.4 mile} or accumulated PM amount 3.4—6.5 g/l {0.22—0.40 lb/ft³}
Drive cycle	• 2
Self test type	• CMDTC self test
Sensor used	• Exhaust gas pressure sensor No.2
FAIL-SAFE FUNCTION	• Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT	• Check engine light is illuminated
POSSIBLE CAUSE	• Erratic signal to PCM ― Input signal part connector or terminals malfunction ― Input signal part related circuit malfunction • Exhaust gas leakage from exhaust system • Pipe between exhaust gas pressure sensor No.2 and catalytic converter restriction and/or damaged or improper routing • Exhaust gas pressure sensor No.2 malfunction • Catalytic converter or diesel particulate filter malfunction (deformation, damage) • PCM malfunction

System Wiring Diagram

• Not applicable

Function Explanation (DTC Detection Outline)

• The PCM performs diagnosis of the diesel particulate filter soot collection performance by comparing the exhaust gas pressure before and after the diesel particulate filter.

• The PCM uses exhaust gas pressure sensor No.2 to monitor the pressure differences (actual pressure differences) before and after the diesel particulate filter.

• When the monitoring conditions are met, the PCM compares the diesel particulate filter before and after pressure differences based on the calculation of the actual pressure difference and the exhaust gas flow volume. If the actual pressure difference at this time increases above or decreases below the specified value relative to the calculated pressure difference, the PCM determines that the diesel particulate filter soot collection performance has lowered.

• The PCM performs diagnosis when each of the preconditions during drive cycle is met. If a malfunction is detected, the malfunction detection counter begins counting up. The value of the malfunction detection counter is maintained while the preconditions are not being met. If the cumulative value of the malfunction detection counter exceeds the threshold during the first drive cycle, a malfunction is determined and a pending code is stored.

• If the PCM determines that the malfunction recurs from the next drive cycle and thereafter, it stores a DTC and turns on the check engine light.

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VERIFY TROUBLESHOOTING COMPLETED

1. Connect the M-MDS to the DLC-2.

2. Display the PM_GEN using the M-MDS data logger function.

Note

• Driving the vehicle for approx. 20 km {12 mile} is required to set the value of the PM_GEN to 0.37 g/l {0.023 lb/ft³} or more.

3. Drive the vehicle until the value of the PM_GEN exceeds 0.37 g/l {0.023 lb/ft³}.

4. Display the EXP_DIF_AVE and EXH_FL using the M-MDS data logger function.

Note

• Measure the values of the EXP_DIF_AVE and EXH_FL while the vehicle is being driven.

5. Drive at a constant speed for 4 s under the following conditions.

• 2nd gear fixed

• Engine speed: 3,000-3,400 rpm

6. Verify that the values of the PIDs EXP_DIF_AVE and EXH_FL are the standard or more.

Standard

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PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

Item	Definition	Unit	Condition/Specification
EXH_FL	Exhaust gas amount	m³/min	• Displays exhaust gas amount
EXHP_DIF_AVE	Average value of the pressure difference before and after passing through the diesel particulate filter	KPa {MPa}, mBar {Bar}, psi, in H20	• Display average value of the pressure difference before and after passing through the diesel particulate filter
PM_GEN	PM generation amount	—(g/l, lb/ft3)	• Displays the PM generation amount

Function Inspection Using M-MDS

STEP	INSPECTION		ACTION
1	PURPOSE: 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.
1		No	Go to the next step.
2	PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is the DTC P2002:00 on FREEZE FRAME DATA?	Yes	Go to the next step.
2		No	Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA. (See DTC TABLE [SKYACTIV-D 2.2].)
3	PURPOSE: RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the FREEZE FRAME DATA/snapshot data on the repair order.	—	Go to the next step.
4	PURPOSE: VERIFY RELATED PENDING CODE AND/OR DTC • Switch the ignition off, then ON (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].) • Are any other PENDING CODEs and/or DTCs present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC TABLE [SKYACTIV-D 2.2].) Go to the troubleshooting procedure to perform the procedure from Step 1.
4		No	Go to the troubleshooting procedure to perform the procedure from Step 1.

Diagnostic Procedure

Intention of troubleshooting procedure

• Steps 1-3

― Perform inspection of each separate part.

• Steps 4-5

― Verify that primary malfunction is resolved and there are no other malfunctions.

Step

Inspection

Results

Action

1

PURPOSE: INSPECT EXHAUST SYSTEM FOR MALFUNCTION

•  Inspect the exhaust system for a malfunction.

•  Is there a malfunction in the exhaust system?

Yes

Repair or replace the malfunctioning location, then go to Step 4.

No

Go to the next step.

2

PURPOSE: INSPECT EXHAUST GAS PRESSURE SENSOR-RELATED PIPE FOR MALFUNCTION

•  Inspect the exhaust gas pressure sensor-related pipe for a malfunction.

•  Is there a malfunction in the exhaust gas pressure sensor-related pipe?

Yes

Repair or replace the malfunctioning location, then go to Step 4.

No

Go to the next step.

3

PURPOSE: INSPECT EXHAUST GAS PRESSURE SENSOR

•  Inspect the exhaust gas pressure sensor.

•  Is the exhaust gas pressure sensor normal?
(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].)

Yes

Go to the next step.

No

Replace the exhaust gas pressure sensor, then go to the next step.

(See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].)

4

PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION

•  Reconnect all disconnected connectors and hoses.

•  Clear the DTC from the PCM memory using the M-MDS.
(See CLEARING DTC [SKYACTIV-D 2.2].)

Note

•  If the repeatability verification procedure is to be implemented, the vehicle will need to be driven for approx. 100 km {62 mile}. Therefore, verify in advance that the repairs have been completed correctly using the repair completion verification procedure.

•  Verify that repairs have been completed.
(See VERIFY TROUBLESHOOTING COMPLETED.)

•  Are the PIDs EXP_DIF_AVE, EXH_FL, and PM_GEN the standard or more?

Yes

Go to the next step.

No

Implement the repair completion verification procedure again.

•  If a malfunction occurs, perform the inspection from Step 1.

―  If the malfunction is not resolved, replace the catalytic converter.

5

PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION

•  Is any other DTC or pending code stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	PURPOSE: INSPECT EXHAUST SYSTEM FOR MALFUNCTION • Inspect the exhaust system for a malfunction. • Is there a malfunction in the exhaust system?	Yes	Repair or replace the malfunctioning location, then go to Step 4.
1		No	Go to the next step.
2	PURPOSE: INSPECT EXHAUST GAS PRESSURE SENSOR-RELATED PIPE FOR MALFUNCTION • Inspect the exhaust gas pressure sensor-related pipe for a malfunction. • Is there a malfunction in the exhaust gas pressure sensor-related pipe?	Yes	Repair or replace the malfunctioning location, then go to Step 4.
2		No	Go to the next step.
3	PURPOSE: INSPECT EXHAUST GAS PRESSURE SENSOR • Inspect the exhaust gas pressure sensor. • Is the exhaust gas pressure sensor normal? (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].)	Yes	Go to the next step.
3		No	Replace the exhaust gas pressure sensor, then go to the next step. (See EXHAUST GAS PRESSURE SENSOR INSPECTION [SKYACTIV-D 2.2].)
4	PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION • Reconnect all disconnected connectors and hoses. • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [SKYACTIV-D 2.2].) Note • If the repeatability verification procedure is to be implemented, the vehicle will need to be driven for approx. 100 km {62 mile}. Therefore, verify in advance that the repairs have been completed correctly using the repair completion verification procedure. • Verify that repairs have been completed. (See VERIFY TROUBLESHOOTING COMPLETED.) • Are the PIDs EXP_DIF_AVE, EXH_FL, and PM_GEN the standard or more?	Yes	Go to the next step.
4		No	Implement the repair completion verification procedure again. • If a malfunction occurs, perform the inspection from Step 1. ― If the malfunction is not resolved, replace the catalytic converter.
5	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION • Is any other DTC or pending code stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
5		No	DTC troubleshooting completed.