DTC P24D0:00 [DOSING CONTROL UNIT (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

PM sensor: internal supply voltage malfunction

DETECTION CONDITION

Determination conditions

•  The PM sensor internal supply voltage is not within the specified value.

Preconditions

•  Battery voltage: 10.9—16 V

•  Ignition switched ON (engine off)

•  The following DTCs is not detected:

―  PM sensor: P24D0:00, U02A3:00

Drive cycle

•  1

Self test type

•  CMDTC self test

Sensor used

•  PM sensor

•  Dosing control unit

FAIL-SAFE FUNCTION

•  Not applicable

VEHICLE STATUS WHEN DTCs ARE OUTPUT

•  Illuminates selective catalytic reduction (SCR) warning light.

•  DTC P1640:00 is also stored in the PCM.

POSSIBLE CAUSE

•  PM connector or terminals malfunction

•  SCR relay No.2 malfunction

•  SCR4 15 A fuse malfunction

•  Short to ground in wiring harness between SCR4 15 A fuse and PM sensor terminal A

•  Open circuit in wiring harness between the following terminals:

―  SCR relay No.2 terminal C—PM sensor terminal A

―  SCR relay No.1 terminal C—SCR relay No.2 terminal A

―  SCR relay No.2 terminal E—body ground

•  Dosing control unit connector or terminals malfunction

•  PM sensor malfunction

―  Internal malfunction

•  Dosing control unit malfunction

DESCRIPTION	PM sensor: internal supply voltage malfunction
DETECTION CONDITION	Determination conditions	• The PM sensor internal supply voltage is not within the specified value.
Preconditions	• Battery voltage: 10.9—16 V • Ignition switched ON (engine off) • The following DTCs is not detected: ― PM sensor: P24D0:00, U02A3:00
Drive cycle	• 1
Self test type	• CMDTC self test
Sensor used	• PM sensor • Dosing control unit
FAIL-SAFE FUNCTION	• Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT	• Illuminates selective catalytic reduction (SCR) warning light. • DTC P1640:00 is also stored in the PCM.
POSSIBLE CAUSE	• PM connector or terminals malfunction • SCR relay No.2 malfunction • SCR4 15 A fuse malfunction • Short to ground in wiring harness between SCR4 15 A fuse and PM sensor terminal A • Open circuit in wiring harness between the following terminals: ― SCR relay No.2 terminal C—PM sensor terminal A ― SCR relay No.1 terminal C—SCR relay No.2 terminal A ― SCR relay No.2 terminal E—body ground • Dosing control unit connector or terminals malfunction • PM sensor malfunction ― Internal malfunction • Dosing control unit malfunction

System Wiring Diagram

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Function Explanation (DTC Detection Outline)

• PM sensor performs diagnosis independently and if it detects a power supply voltage circuit malfunction, it sends a malfunction signal to the dosing control unit.

• When the malfunction signal is received from PM sensor, the dosing control unit stores a DTC.

Repeatability Verification Procedure

1. Perform the "COMPULSORY DIESEL PARTICULATE FILTER REGENERATION". (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].)

2. Idle the engine for 3 min.

PID Item/Simulation Item Used In Diagnosis

• Not applicable

Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION

1

PURPOSE: VERIFY RELATED REPAIR 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.

No

Go to the next step.

2

PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA

•  Is the DTC P24D0:00 on FREEZE FRAME DATA?

Yes

Go to the next step.

No

Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA.

(See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

3

PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION

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

•  Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (PM sensor related) on the repair order.

—

Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: VERIFY RELATED REPAIR 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.
No	Go to the next step.
2	PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is the DTC P24D0:00 on FREEZE FRAME DATA?	Yes	Go to the next step.
No	Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA. (See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)
3	PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION • Recording can be facilitated using the screen capture function of the PC. • Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (PM sensor related) on the repair order.	—	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

• Step 1—5

― Perform inspection of PM sensor power supply related parts.

• Step 6—7

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

STEP

INSPECTION

RESULTS

ACTION

1

PURPOSE: INSPECT PM SENSOR CONNECTOR CONDITION

•  Switch the ignition off.

•  Disconnect the PM sensor 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 3.

No

Go to the next step.

2

PURPOSE: INSPECT SCR RELAY No.2

•  Switch the ignition off.

•  Remove the SCR relay No.2.
(See RELAY LOCATION.)

•  Inspect the SCR relay No.2.
(See RELAY INSPECTION.)

•  Is there any malfunction?

Yes

Replace the SCR relay No.2, then go to Step 6.

(See RELAY LOCATION.)

No

Go to the next step.

3

PURPOSE: INSPECT SCR4 15 A FUSE

•  Remove the SCR4 15 A fuse.
(See RELAY LOCATION.)

•  Inspect the SCR4 15 A fuse.
(See RELAY INSPECTION.)

•  Is there any malfunction?

Yes

Go to the next step.

No

If the fuse is blown:

•  Refer to the wiring diagram and verify whether or not there is a common connector between SCR4 15 A fuse and PM sensor terminal A.

If there is a common connector:

―  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

―  Repair or replace the malfunctioning part.

If there is no common connector:

―  Repair or replace the wiring harness which has a short to ground.

―  Replace the fuse.

If the fuse is damaged:

•  Replace the fuse.

Go to Step 6.

4

PURPOSE: INSPECT PM SENSOR CIRCUIT FOR OPEN CIRCUIT

•  Verify that the urea level sensor/urea temperature sensor/urea tank heater and dosing control unit connectors are disconnected.

•  Switch the ignition off.

•  Inspect for continuity between the following terminals (wiring harness-side):

―  SCR relay No.2 terminal C—PM sensor terminal A

―  SCR relay No.1 terminal C—SCR relay No.2 terminal A

―  SCR relay No.2 terminal E—body ground

•  Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

•  SCR relay No.2 terminal C—PM sensor terminal A

•  SCR relay No.1 terminal C—SCR relay No.2 terminal A

•  SCR relay No.2 terminal E—body ground

If there is a common connector:

•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

•  Repair or replace the malfunctioning part.

If there is no common connector:

•  Repair or replace the wiring harness which has an open circuit.

Go to Step 6.

5

PURPOSE: INSPECT DOSING CONTROL UNIT CONNECTOR CONDITION

•  Switch the ignition off.

•  Disconnect the dosing control unit 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 the next step.

No

Replace the PM sensor, then go to the next step.

(See PM SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

6

PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION

•  Always reconnect all disconnected connectors.

•  Clear the DTC from the dosing control unit memory using the M-MDS.
(See CLEARING DTC [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

•  Implement the repeatability verification procedure.
(See Repeatability Verification Procedure.)

•  Perform the Pending Trouble Code Access Procedure.
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

•  Is the same Pending DTC present?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the dosing control unit.
(See DOSING CONTROL UNIT REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

Go to the next step.

No

Go to the next step.

7

PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION

•  Is any other DTC or pending code stored?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

No

DTC troubleshooting completed.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: INSPECT PM SENSOR CONNECTOR CONDITION • Switch the ignition off. • Disconnect the PM sensor 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 3.
1		No	Go to the next step.
2	PURPOSE: INSPECT SCR RELAY No.2 • Switch the ignition off. • Remove the SCR relay No.2. (See RELAY LOCATION.) • Inspect the SCR relay No.2. (See RELAY INSPECTION.) • Is there any malfunction?	Yes	Replace the SCR relay No.2, then go to Step 6. (See RELAY LOCATION.)
2		No	Go to the next step.
3	PURPOSE: INSPECT SCR4 15 A FUSE • Remove the SCR4 15 A fuse. (See RELAY LOCATION.) • Inspect the SCR4 15 A fuse. (See RELAY INSPECTION.) • Is there any malfunction?	Yes	Go to the next step.
3		No	If the fuse is blown: • Refer to the wiring diagram and verify whether or not there is a common connector between SCR4 15 A fuse and PM sensor terminal A. If there is a common connector: ― Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. ― Repair or replace the malfunctioning part. If there is no common connector: ― Repair or replace the wiring harness which has a short to ground. ― Replace the fuse. If the fuse is damaged: • Replace the fuse. Go to Step 6.
4	PURPOSE: INSPECT PM SENSOR CIRCUIT FOR OPEN CIRCUIT • Verify that the urea level sensor/urea temperature sensor/urea tank heater and dosing control unit connectors are disconnected. • Switch the ignition off. • Inspect for continuity between the following terminals (wiring harness-side): ― SCR relay No.2 terminal C—PM sensor terminal A ― SCR relay No.1 terminal C—SCR relay No.2 terminal A ― SCR relay No.2 terminal E—body ground • Is there continuity?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • SCR relay No.2 terminal C—PM sensor terminal A • SCR relay No.1 terminal C—SCR relay No.2 terminal A • SCR relay No.2 terminal E—body ground If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 6.
5	PURPOSE: INSPECT DOSING CONTROL UNIT CONNECTOR CONDITION • Switch the ignition off. • Disconnect the dosing control unit 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 the next step.
5		No	Replace the PM sensor, then go to the next step. (See PM SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
6	PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION • Always reconnect all disconnected connectors. • Clear the DTC from the dosing control unit memory using the M-MDS. (See CLEARING DTC [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) • Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the dosing control unit. (See DOSING CONTROL UNIT REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) Go to the next step.
6		No	Go to the next step.
7	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION • Is any other DTC or pending code stored?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)
7		No	DTC troubleshooting completed.