DTC P24C4:00 [PCM (SKYACTIV-D 2.2)]

id0102j5058800

DTC P24C4:00

Fully open/close malfunction in EGR cooler bypass valve position sensor

DETECTION CONDITION

•  Any of the following conditions is met when the engine coolant temperature is 70°C or more.

―  When the EGR cooler bypass valve is fully closed with the ignition switched OFF, the signal voltage of the EGR cooler bypass valve position sensor is 1.3 V or more, or 0.65 V or less.

―  The power supply voltage is 11.5 V or less, or 14.5 V or more, or fluctuation in voltage is 5 V or more after the specified time has elapsed since the ignition was switched OFF.

―  The deviation in voltage of the EGR cooler bypass valve when fully closed and the learning value exceeds 0.13 V.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

•  EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminal malfunction

•  PCM connector or terminal malfunction

•  EGR cooler bypass valve sticking, or foreign matter penetration

•  EGR cooler bypass valve position sensor malfunction

•  PCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

DTC P24C4:00	Fully open/close malfunction in EGR cooler bypass valve position sensor
DETECTION CONDITION	• Any of the following conditions is met when the engine coolant temperature is 70°C or more. ― When the EGR cooler bypass valve is fully closed with the ignition switched OFF, the signal voltage of the EGR cooler bypass valve position sensor is 1.3 V or more, or 0.65 V or less. ― The power supply voltage is 11.5 V or less, or 14.5 V or more, or fluctuation in voltage is 5 V or more after the specified time has elapsed since the ignition was switched OFF. ― The deviation in voltage of the EGR cooler bypass valve when fully closed and the learning value exceeds 0.13 V. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• EGR cooler bypass valve/EGR cooler bypass valve position sensor connector or terminal malfunction • PCM connector or terminal malfunction • EGR cooler bypass valve sticking, or foreign matter penetration • EGR cooler bypass valve position sensor malfunction • PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

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 P24C4:00 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.

2

INSPECT EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION

•  Switch the ignition OFF.

•  Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor 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.

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 6.

4

EGR COOLER BYPASS VALVE INSPECTION

•  Inspect the EGR cooler bypass valve.
(See EGR COOLER BYPASS VALVE INSPECTION [SKYACTIV-D 2.2].)

•  Is the EGR cooler bypass valve normal?

Yes

Go to the next step.

No

Replace the EGR cooler bypass valve, then go to Step 6.

(See EGR COOLER BYPASS VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

5

INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR

•  Reconnect all the disconnected connectors.

•  Inspect the EGR cooler bypass valve position sensor.
(See EGR COOLER BYPASS VALVE POSITION SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is the EGR cooler bypass valve position sensor normal?

Yes

Go to the next step.

No

Replace the EGR cooler bypass valve, then go to the next step.

(See EGR COOLER BYPASS VALVE 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 idle it.

•  Switch the ignition OFF and wait for 10 s.

•  Display the DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

•  Has DTC P24C4:00 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
1	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 P24C4:00 been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
1		No	Go to the next step.
2	INSPECT EGR COOLER BYPASS VALVE/EGR COOLER BYPASS VALVE POSITION SENSOR CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the EGR cooler bypass valve/EGR cooler bypass valve position sensor 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.
2		No	Repair or replace the connector, then go to Step 6.
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.
3		No	Repair or replace the connector, then go to Step 6.
4	EGR COOLER BYPASS VALVE INSPECTION • Inspect the EGR cooler bypass valve. (See EGR COOLER BYPASS VALVE INSPECTION [SKYACTIV-D 2.2].) • Is the EGR cooler bypass valve normal?	Yes	Go to the next step.
4		No	Replace the EGR cooler bypass valve, then go to Step 6. (See EGR COOLER BYPASS VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5	INSPECT EGR COOLER BYPASS VALVE POSITION SENSOR • Reconnect all the disconnected connectors. • Inspect the EGR cooler bypass valve position sensor. (See EGR COOLER BYPASS VALVE POSITION SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is the EGR cooler bypass valve position sensor normal?	Yes	Go to the next step.
5		No	Replace the EGR cooler bypass valve, then go to the next step. (See EGR COOLER BYPASS VALVE 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 idle it. • Switch the ignition OFF and wait for 10 s. • Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Has DTC P24C4:00 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].)
6		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)].)
7		No	DTC troubleshooting completed.