RM36D0EC _51 Engine / Hybrid System _083058 M20D-FKS ENGINE CONTROL _0401834 SFI SYSTEM C

M20D-FKS ENGINE CONTROL  SFI SYSTEM  P24522A  Particulate Filter Pressure Sensor "A" Signal Stuck In Range  


DESCRIPTION

Refer to DTC P244B00.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P244B00

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P24522A Particulate Filter Pressure Sensor "A" Signal Stuck In Range When ignition switch ON, the differential pressure sensor output learning value at atmospheric pressure is above or below the specified value for 1 second or more (1 trip detection logic).
·

Open or short in differential pressure sensor circuit

·

Differential pressure sensor

·

Vacuum transmitting hose assembly


- DTC stored SAE: P2453

MONITOR DESCRIPTION

The differential pressure sensor output learning value is updated when ignition switch off after completely engine warmed up drive cycle. The sensor output should show its neutral (zero) value at the condition. The sensor output stuck in range is judged when the learning value is below or above the specified value at ignition switch ON after the learning value updated.

CONFIRMATION DRIVING PATTERN

A526498E01
1.063,1.76 1.979,1.958 0.917,0.198 10 false Idling 0.813,1.031 2.042,1.229 1.229,0.198 10 false 2500 rpm 2.865,2.573 4.24,2.771 1.375,0.198 10 false 7 minutes 4.156,2.583 5.531,2.781 1.375,0.198 10 false 2 minutes 2.115,1.917 2.573,2.115 0.458,0.198 10 false [A] 4.323,1.198 4.781,1.396 0.458,0.198 10 false [C] 5.792,3.021 6.25,3.219 0.458,0.198 10 false [F] 5.292,2.167 5.75,2.365 0.458,0.198 10 false [D] 0.573,0.458 2.406,0.656 1.833,0.198 10 false Engine Speed 6.625,2.313 7.094,2.635 0.469,0.323 10 false Time 0.26,2.052 3.01,2.25 2.75,0.198 10 false Ignition Switch ON 3.115,1.917 3.573,2.115 0.458,0.198 10 false [B] 1.833,2.573 3.365,2.771 1.531,0.198 10 false Warming up 5.042,2.573 6.573,2.771 1.531,0.198 10 false 30 seconds 5.625,2.167 6.083,2.365 0.458,0.198 10 false [E]

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [A].

7.

Idle the engine for 7 minutes [B].

8.

With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of 2500 rpm for 2 minutes [C].

9.

Turn the ignition switch off and wait for at least 30 seconds [D].

10.

Turn the ignition switch to ON [E].

11.

Turn the GTS on.

12.

Enter the following menus: Powertrain / Engine / Trouble Codes [F].

13.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



14.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

15.

Input the DTC: P24522A.

16.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions



HINT:
·

If the judgment result is NORMAL, the system is normal.

·

If the judgment result is ABNORMAL, the system has a malfunction.

·

If the judgment result is INCOMPLETE, perform steps [A] through [F] again.




WIRING DIAGRAM

·

Refer to DTC P010012 for the mass air flow meter circuit.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>P010012

·

Refer to DTC U060187 for the differential pressure sensor circuit.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>U060187


CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.


PROCEDURE

1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P24522A)
a.

Read the DTCs.

Powertrain > Engine > Trouble Codes
50001 372

Result:
Result Proceed to
DTC P24522A is output A
DTC P24522A and other DTCs are output B


HINT:

If any DTCs other than P24522A are output, troubleshoot those DTCs first.



A

2.CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE ASSEMBLY

B

GO TO DTC CHART

2.CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE ASSEMBLY
CAUTION:

Be careful of being burned by exhaust gases during the following inspection.


A525437C01
1.583,1.01 1.354,0.781 1.354,0.781 1.229,0.781 true 2.438,1.708 2.292,1.708 2.292,1.708 1.854,1.5 true 0.979,0.708 1.177,0.917 0.198,0.208 10 true *1 2.469,1.625 2.677,1.823 0.208,0.198 10 true *2
*1 Differential Pressure Sensor
*2 Vacuum Transmitting Hose Assembly


a.

Disconnect vacuum transmitting hose assembly on the differential pressure sensor.


b.

Start the engine.


c.

Check if there are exhaust gas pulsations from vacuum transmitting hose assembly during idling.


Result:
Proceed to
OK
NG



OK

3.INSPECT DIFFERENTIAL PRESSURE SENSOR

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS

3.INSPECT DIFFERENTIAL PRESSURE SENSOR

Click hereEngine / Hybrid System>M20D-FKS (EMISSION CONTROL)>DIFFERENTIAL PRESSURE SENSOR>ON-VEHICLE INSPECTION

Result:
Proceed to
OK
NG



OK

4.CLEAR DTC

NG

6.CHECK HARNESS AND CONNECTOR (DIFFERENTIAL PRESSURE SENSOR - ECM)
4.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

b.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

5.CHECK WHETHER DTC OUTPUT RECURS (DTC P24522A)
5.CHECK WHETHER DTC OUTPUT RECURS (DTC P24522A)
a.

Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.


b.

Read the Pending DTCs.

Powertrain > Engine > Trouble Codes
50001 372
OK:

DTCs are not output



Result:
Proceed to
NEXT



NEXT

END

6.CHECK HARNESS AND CONNECTOR (DIFFERENTIAL PRESSURE SENSOR - ECM)
a.

Disconnect the differential pressure sensor connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C72-3 (VC) - C71-128 (VSPE) Always Below 1 Ω
C72-1 (PESE) - C71-164 (PESE) Always Below 1 Ω
C72-2 (E2) - C71-163 (ESPE) Always Below 1 Ω
C72-3 (VC) or C71-128 (VSPE) - Body ground and other terminals Always 10 kΩ or higher
C72-1 (PESE) or C71-164 (PESE) - Body ground and other terminals Always 10 kΩ or higher
C72-2 (E2) or C71-163 (ESPE) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.REPLACE DIFFERENTIAL PRESSURE SENSOR

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.REPLACE DIFFERENTIAL PRESSURE SENSOR
a.

Replace the differential pressure sensor.

Click hereEngine / Hybrid System>M20D-FKS (EMISSION CONTROL)>DIFFERENTIAL PRESSURE SENSOR>REMOVAL


b.

Start the engine and allow it to idle until the engine coolant temperature reaches 75°C (167°F) or higher.


c.

Idle the engine for 7 minutes.


d.

With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of 2500 rpm for 2 minutes.


e.

Turn the ignition switch off and wait for 30 seconds or more.


Result:
Proceed to
NEXT



NEXT

END