RM38T0EC _51 Engine / Hybrid System _144956 M20F-FXS, M20G-FXS ENGINE CONTROL _0604911 SFI SYSTEM C

M20F-FXS, M20G-FXS ENGINE CONTROL  SFI SYSTEM  P24521C  Particulate Filter Pressure Sensor "A" Circuit Voltage Out of Range  


DESCRIPTION

Refer to DTC P244B00.

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>P244B00

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
P24521C Particulate Filter Pressure Sensor "A" Circuit Voltage Out of Range Differential pressure sensor value at intake air flow of 32 gm/sec or higher is below 1 kPa for 5 second or more (1 trip detection logic).
·

Incorrect vacuum transmitting hose assembly

·

Differential pressure sensor


Does not come on SAE Code: P2453

MONITOR DESCRIPTION

When the differential pressure sensor output is output with the positive and negative values reversed, incorrect connection of the differential pressure sensor and vacuum transmitting hose assembly is judged and the ECM stores a DTC.

MONITOR STRATEGY

Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

1.
A288927
1.333,2.854 1.594,2.438 1.594,2.438 1.75,2.438 false 0.99,0.51 2.219,0.708 1.229,0.198 10 false 80 km/h 1.01,1.385 2.24,1.583 1.229,0.198 10 false 60 km/h 1.208,2.25 2.292,2.458 1.083,0.208 10 false Idling 0.396,2.917 1.583,3.115 1.188,0.198 10 false Ignition switch ON 2.021,2.417 3.25,2.615 1.229,0.198 10 false [A] 2.646,2.125 3.333,2.469 0.688,0.344 10 false [B] 4,0.729 4.469,1 0.469,0.271 10 false [C] 2.344,2.927 3.573,3.125 1.229,0.198 10 false Warming up 3.5,2.927 4.906,3.146 1.406,0.219 10 false 10 seconds or more 5.01,3.344 5.948,3.563 0.938,0.219 10 false [D]

2.

Connect the GTS to the DLC3.

3.

Turn the ignition switch to ON.

4.

Turn the GTS on.

5.

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

6.

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

7.

Turn the ignition switch to ON. [A]

8.

Turn the GTS on.

9.

Put the engine in Inspection Mode (Maintenance Mode).

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>INSPECTION MODE PROCEDURE

10.

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

11.

Drive the vehicle at 60 to 80 km/h (37 to 50 mph) for 10 seconds or more [C].

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


12.

Turn the GTS on.

13.

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

14.

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.



15.

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

16.

Input the DTC: P24521C.

17.

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 [C] and [D] again.




CAUTION / NOTICE / HINT

NOTICE:
·

Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>VEHICLE CONTROL HISTORY (RoB)

(Select Powertrain in Health Check and then check the time stamp data.)

·

If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>VEHICLE CONTROL HISTORY (RoB)



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 P24521C)
a.

Read the DTCs.

Powertrain > Engine > Trouble Codes
50001 372
Result:
Result Proceed to
DTC P24521C and other DTCs are output A
DTC P24521C is output B


HINT:

If any DTCs other than P24521C are output, troubleshoot those DTCs first.




A

GO TO DTC CHART

B

2.CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE ASSEMBLY AND VACUUM PIPE (DIFFERENTIAL PRESSURE SENSOR - NO. 1 PIPE)
2.CHECK BLOCKAGE OF VACUUM TRANSMITTING HOSE ASSEMBLY AND VACUUM PIPE (DIFFERENTIAL PRESSURE SENSOR - NO. 1 PIPE)
A529039C01
1.271,1.125 0.667,0.25 0.667,0.25 0.5,0.25 true 1.583,1.74 1.083,2.5 1.083,2.5 0.917,2.5 true 3.74,1.781 3.333,0.917 3.333,0.917 3.167,0.917 true 3.75,2.604 3.167,2 3.167,2 3,2 true 3.271,3.333 3,3 3,3 2.833,3 true 0.323,0.177 0.635,0.333 0.313,0.156 10 false *1 0.719,2.417 1.01,2.615 0.292,0.198 10 false *2 2.625,2.917 2.938,3.073 0.313,0.156 10 false *3 2.802,1.917 3.115,2.073 0.313,0.156 10 false *2 2.99,0.833 3.302,0.99 0.313,0.156 10 false *1
*1 Differential Pressure Sensor *2 Vacuum Transmitting Hose Assembly
*3 No. 1 Pipe - -


a.

Check if vacuum transmitting hose assembly between the differential pressure sensor and the No. 1 pipe is correct.


b.

Check that there is no exhaust gas leak between the differential pressure sensor and the No. 1 pipe.


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>M20F-FXS, M20G-FXS (EMISSION CONTROL)>DIFFERENTIAL PRESSURE SENSOR>ON-VEHICLE INSPECTION

Result:
Proceed to
OK
NG



OK

4.CLEAR DTC

NG

6.REPLACE DIFFERENTIAL PRESSURE SENSOR
4.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

Result:
Proceed to
NEXT


b.

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



NEXT

5.CHECK WHETHER DTC OUTPUT RECURS (DTC P24521C)
5.CHECK WHETHER DTC OUTPUT RECURS (DTC P24521C)
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.REPLACE DIFFERENTIAL PRESSURE SENSOR
a.

Replace the differential pressure sensor.

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (EMISSION CONTROL)>DIFFERENTIAL PRESSURE SENSOR>REMOVAL


b.

Put the engine in Inspection Mode (Maintenance Mode).

Powertrain > Hybrid Control > Utility
Tester Display
Inspection Mode
50005 397 2103

c.

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

Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205

d.

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


e.

Repeat the above procedures (A) and (B) 3 times.

HINT:

Procedures (A) and (B) must be repeated 3 times to complete the differential pressure sensor learning process.



Result:
Proceed to
NEXT



NEXT

END