DTC P1044:00 [PCM (SKYACTIV-D 2.2)]

DTC P1044:00	Cylinder No.4: Function malfunction
DETECTION CONDITION	• With all of the following conditions met, the PCM determines that the control signal received from fuel injector No.4 is not operating normally 255 times consecutively. ― Battery positive voltage: 10.5—18.0 V ― diesel particulate filter regeneration control is not performed ― ECT sensor No.1: 5 °C or more ― Actual fuel temperature: 5 °C or more ― Actual fuel pressure: 35—217 MPa ― The following DTCs are not detected • Fuel pressure sensor: P10C4:00, P10C5:00, P10C6:00, P10CA:00, P10CB:00, P10CC:00, P10CD:00 • Fuel temperature sensor: P10D2:00, P10D4:00, P10D5:00 • Fuel injector: P0204:00, P2146:00, P2147:00, P2148:00, P1379:00, P2696:00, P268D:00, P268F:00 • LIN communication system: U1201:00, U1202:00, U1203:00, U1204:00 • ECT sensor: P0118:00, P0117:00 • Malfunction in PCM: P0606:00, P062B:00 Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Limits engine torque. • Inhibits the automatic diesel particulate filter regeneration control. • Inhibits the manual diesel particulate filter regeneration control. • Inhibits the EGR control.
POSSIBLE CAUSE	• Fuel injector No.4 connector or terminal malfunction • PCM connector or terminal malfunction • Fuel injector No.4 malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

DTC P1044:00

Cylinder No.4: Function malfunction

DETECTION CONDITION

• With all of the following conditions met, the PCM determines that the control signal received from fuel injector No.4 is not operating normally 255 times consecutively.

― Battery positive voltage: 10.5—18.0 V

― diesel particulate filter regeneration control is not performed

― ECT sensor No.1: 5 °C or more

― Actual fuel temperature: 5 °C or more

― Actual fuel pressure: 35—217 MPa

― The following DTCs are not detected

• Fuel pressure sensor: P10C4:00, P10C5:00, P10C6:00, P10CA:00, P10CB:00, P10CC:00, P10CD:00

• Fuel temperature sensor: P10D2:00, P10D4:00, P10D5:00

• Fuel injector: P0204:00, P2146:00, P2147:00, P2148:00, P1379:00, P2696:00, P268D:00, P268F:00

• LIN communication system: U1201:00, U1202:00, U1203:00, U1204:00

• ECT sensor: P0118:00, P0117:00

• Malfunction in PCM: P0606:00, P062B:00

Diagnostic support note

• This is a continuous monitor (CCM).

• The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA/Snapshot data is available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

• Limits engine torque.

• Inhibits the automatic diesel particulate filter regeneration control.

• Inhibits the manual diesel particulate filter regeneration control.

• Inhibits the EGR control.

POSSIBLE CAUSE

• Fuel injector No.4 connector or terminal malfunction

• PCM connector or terminal malfunction

• Fuel injector No.4 malfunction

• PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the freeze frame data/snap shot data.	—	Go to the next step.
2	VERIFY OTHER RELATED DTCs • Switch the ignition OFF, and then switch it ON (engine off). • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)]) • Has any DTC other than P1044:00 been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)])
No	Go to the next step.
3	INSPECT FUEL INJECTOR NO.4 CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the fuel injector No.4 connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
No	Repair or replace the connector, then go to Step 6.
4	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
No	Repair or replace the connector, then go to Step 6.
5	INSPECT FUEL INJECTOR NO.4 • Inspect fuel injector No.4. (See FUEL INJECTOR INSPECTION [SKYACTIV-D 2.2]) • Is fuel injector No.4 normal?	Yes	Go to the next step.
No	Replace fuel injector No.4, then go to the next step. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
6	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)]) • Start the engine and warm it up. • Stop all electrical loads. (Such as A/C, headlights, blower fan, rear window defroster) • Drive the vehicle on flat roads under the following conditions 4 times repeatedly. Warning • Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured. 1. Accelerate to 15 km/h and decelerate to 0 km/h. 2. Wait for 20 s while idling. 3. Accelerate to 30 km/h, and decelerate to 0 km/h after driving the vehicle while maintaining the speed for 20 s. 4. Wait for 20 s while idling. 5. Accelerate to 50 km/h, and decelerate to 0 km/h after driving the vehicle while maintaining the speed for 20 s. 6. Wait for 20 s while idling. • Accelerate to 70 km/h and drive the vehicle while maintaining the speed for 60 s. • Decelerate to 50 km/h and drive the vehicle while maintaining the speed for 60 s. • Accelerate to 70 km/h and drive the vehicle while maintaining the speed for 60 s. • Accelerate to 100 km/h and drive the vehicle while maintaining the speed for 30 s. • Accelerate to 120 km/h and decelerate to 0 km/h. • Stop the engine. • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)]) • Has DTC P1044:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
No	Go to the next step.
7	VERIFY OTHER DTCs • Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)])
No	DTC troubleshooting completed.

Step

Inspection

Results

Action

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

Note

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

• Record the freeze frame data/snap shot data.

—

Go to the next step.

VERIFY OTHER RELATED DTCs

• Switch the ignition OFF, and then switch it ON (engine off).

• Display the DTCs using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)])

• Has any DTC other than P1044:00 been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)])

Go to the next step.

INSPECT FUEL INJECTOR NO.4 CONNECTOR CONDITION

• Switch the ignition OFF.

• Disconnect the fuel injector No.4 connector.

• Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

Repair or replace the connector, then go to Step 6.

INSPECT PCM CONNECTOR CONDITION

• Disconnect the PCM connector.

• Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

Repair or replace the connector, then go to Step 6.

INSPECT FUEL INJECTOR NO.4

• Inspect fuel injector No.4.

(See FUEL INJECTOR INSPECTION [SKYACTIV-D 2.2])

• Is fuel injector No.4 normal?

Yes

Go to the next step.

Replace fuel injector No.4, then go to the next step.

(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

• Reconnect all the disconnected connectors.

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

(See CLEARING DTC [PCM (SKYACTIV-D 2.2)])

• Start the engine and warm it up.

• Stop all electrical loads. (Such as A/C, headlights, blower fan, rear window defroster)

• Drive the vehicle on flat roads under the following conditions 4 times repeatedly.

Warning

• Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured.

1. Accelerate to 15 km/h and decelerate to 0 km/h.

2. Wait for 20 s while idling.

3. Accelerate to 30 km/h, and decelerate to 0 km/h after driving the vehicle while maintaining the speed for 20 s.

4. Wait for 20 s while idling.

5. Accelerate to 50 km/h, and decelerate to 0 km/h after driving the vehicle while maintaining the speed for 20 s.

6. Wait for 20 s while idling.

• Accelerate to 70 km/h and drive the vehicle while maintaining the speed for 60 s.

• Decelerate to 50 km/h and drive the vehicle while maintaining the speed for 60 s.

• Accelerate to 70 km/h and drive the vehicle while maintaining the speed for 60 s.

• Accelerate to 100 km/h and drive the vehicle while maintaining the speed for 30 s.

• Accelerate to 120 km/h and decelerate to 0 km/h.

• Stop the engine.

• Display the DTCs using the M-MDS.

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)])

• Has DTC P1044:00 been recorded?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

Go to the next step.

VERIFY OTHER DTCs

• Has any other DTC or pending code been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)])

DTC troubleshooting completed.