DTC P0404:00 [PCM (SKYACTIV-D 2.2)]

id0102j5155300


Engine Type

Item

Reference
Fuel injector (2 pin type)
(See Fuel injector (2 pin type).)
Fuel injector (6 pin type)
(See Fuel injector (6 pin type).)


Fuel injector (2 pin type)

DTC P0404:00

Circuit malfunction in EGR valve DC motor control system
DETECTION CONDITION
•  A condition has continued for 2 s in which the DC motor drive current of the EGR valve is more than the specified value or the temperature of the DC motor drive circuit is 175 °C {347 °F} or more.
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
•  Inhibits the boost control.
•  Inhibits the EGR control.
•  PCM restricts engine-transaxle integration control. (ATX)
•  Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE
•  EGR valve connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  EGR valve terminal E—PCM terminal 1BR
―  EGR valve terminal A—PCM terminal 1BM
•  PCM connector or terminals malfunction
•  Short to power supply in wiring harness between the following terminals:
―  EGR valve terminal E—PCM terminal 1BR
―  EGR valve terminal A—PCM terminal 1BM
•  EGR valve malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
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.
2
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.
No
Go to the next step.
3
INSPECT EGR VALVE CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the EGR valve 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 8.
No
Go to the next step.
4
INSPECT EGR VALVE CIRCUIT FOR SHORT TO GROUND
•  Verify that the EGR valve connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  EGR valve terminal E
―  EGR valve terminal A
•  Is there continuity?
Yes
If the short to ground circuit could be detected in the wiring harness:
•  Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
―  EGR valve terminal E—PCM terminal 1BR
―  EGR valve terminal A—PCM terminal 1BM
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.
If the short to ground circuit could not be detected in the wiring harness:
•  Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 8.
No
Go to the next step.
5
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM 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 8.
No
Go to the next step.
6
INSPECT EGR VALVE CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the EGR valve and PCM connectors are disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the following terminals (wiring harness-side):
―  EGR valve terminal E
―  EGR valve terminal A
•  Is the voltage 0 V?
Yes
Go to the next step.
No
If there is no common connector:
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  EGR valve terminal E—PCM terminal 1BR
•  EGR valve terminal A—PCM terminal 1BM
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 power supply.
•  Repair or replace the malfunctioning part.
•  Repair or replace the wiring harness which has a short to power supply.
Go to Step 8.
7
INSPECT EGR VALVE
•  Inspect the EGR valve.
•  Is there any malfunction?
Yes
Replace the EGR valve, then go to the next step.
(See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
8
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine and idle it.
•  Wait until the ECT PID value is above 80 °C {176 °F}.
•  Wait for 1 min (idle).
•  Perform the DTC Reading Procedure.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
DTC troubleshooting completed.


Fuel injector (6 pin type)

DTC P0404:00

Circuit malfunction in EGR valve DC motor control system
DETECTION CONDITION
•  With the following conditions met, the DC motor drive current of the EGR valve exceeds the specification or the temperature of the DC motor drive circuit is 170 °C {338 °F} or more for a continuous 2 s.
―  Battery positive voltage: 8—16 V
―  0.5 s have elapsed after engine is started
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.
•  Inhibits engine-stop by i-stop control.
POSSIBLE CAUSE
•  EGR valve connector or terminal malfunction
•  Short to ground in wiring harness between the following terminals:
―  EGR valve/EGR valve position sensor terminal E and PCM terminal 1BR
―  EGR valve/EGR valve position sensor terminal A and PCM terminal 1BM
•  PCM connector or terminal malfunction
•  Short to power supply in wiring harness between the following terminals:
―  EGR valve/EGR valve position sensor terminal E and PCM terminal 1BR
―  EGR valve/EGR valve position sensor terminal A and PCM terminal 1BM
•  EGR valve malfunction
•  PCM malfunction

Diagnostic Procedure

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
INSPECT EGR VALVE/EGR VALVE POSITION SENSOR CONNECTOR CONDITION
•  Switch the ignition OFF.
•  Disconnect the EGR valve 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 7.
3
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 7.
4
INSPECT EGR VALVE CIRCUIT FOR SHORT TO GROUND
•  Verify that the EGR valve/EGR valve position sensor and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (vehicle wiring harness side) and ground.
―  EGR valve/EGR valve position sensor terminal E
―  EGR valve/EGR valve position sensor terminal A
•  Is there continuity?
Yes
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
•  EGR valve/EGR valve position sensor terminal E and PCM terminal 1BR
•  EGR valve/EGR valve position sensor terminal A and PCM terminal 1BM
If there is a common connector:
―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
―  Repair or replace the malfunctioning location.
If there is no common connector:
―  Repair or replace the wiring harness which is shorted to ground.
Go to Step 7.
No
Go to the next step.
5
INSPECT EGR VALVE CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the EGR valve connector and PCM connector are disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the following terminals (vehicle wiring harness side).
―  EGR valve/EGR valve position sensor terminal E
―  EGR valve/EGR valve position sensor terminal A
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
•  EGR valve/EGR valve position sensor terminal E and PCM terminal 1BR
•  EGR valve/EGR valve position sensor terminal A and PCM terminal 1BM
If there is a common connector:
―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location.
―  Repair or replace the malfunctioning location.
If there is no common connector:
―  Repair or replace the wiring harness which is shorted to the power supply.
Go to Step 7.
6
INSPECT EGR VALVE
•  Inspect the EGR valve.
•  Is the EGR valve normal?
Yes
Go to the next step.
No
Replace the EGR valve/EGR valve position sensor, then go to the next step.
(See EGR VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Reconnect all the disconnected connectors.
•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
•  Drive the vehicle on flat roads under the following conditions 5 times repeatedly.
1.  Idle the engine for 20 s.
2.  Accelerate in 2nd gear to 35 km/h and drive the vehicle while maintaining the speed for 25 s.
3.  Stop the vehicle and idle the engine for 20 s.
4.  Accelerate in 3rd gear to 50 km/h and drive the vehicle while maintaining the speed for 50 s.
5.  Stop the vehicle and idle the engine for 20 s.
•  Stop the engine.
•  Display the DTCs using the M-MDS.
•  Has DTC P0404:00 been recorded?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM, then go to the next step.
No
Go to the next step.
8
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.