M20F-FXS, M20G-FXS ENGINE CONTROL SFI SYSTEM P24522A Particulate Filter Pressure Sensor "A" Signal Stuck In Range
DESCRIPTION
Refer to DTC P244B00.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | 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 ·
No. 1 vacuum pipe |
Does not come on | SAE Code: 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.
MONITOR STRATEGY
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Put the engine in Inspection Mode (Maintenance Mode).
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
Idle the engine for 1 minute or more.
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
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.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P24522A.
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.
WIRING DIAGRAM
Refer to DTC P010012 for the mass air flow meter circuit.
Refer to DTC P245211 for the differential pressure sensor circuit.
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.
(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.
- 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
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTC P24522A and other DTCs are output A DTC P24522A is output B
- HINT:
-
If any DTCs other than P24522A are output, troubleshoot those DTCs first.
A
B
Check for exhaust gas leaks.
- OK:
No gas leaks in exhaust system.
- HINT:
-
Perform "Inspection After Repair" after repairing or replacing the exhaust system.
- Result:
Proceed to OK NG
OK
NG
| *1 | Differential Pressure Sensor | *2 | Vacuum Transmitting Hose Assembly |
| *3 | No. 1 Pipe | - | - |
Check the vacuum transmitting hose assembly is no exhaust gas leak between the differential pressure sensor and the No. 1 pipe.
- OK:
The vacuum transmitting hose assembly is no exhaust gas leak.
- Result:
Proceed to OK NG
OK
NG
- CAUTION:
-
Be careful of being burned by exhaust gases during the following inspection.
| *1 | Differential Pressure Sensor |
| *2 | Vacuum Transmitting Hose Assembly |
Disconnect vacuum transmitting hose assembly on the differential pressure sensor.
Put the engine in Inspection Mode (Maintenance Mode).
- Powertrain > Hybrid Control > Utility
-
Tester Display Inspection Mode - 50005 397 2103
Start the engine.
Check if there are exhaust gas pulsations from vacuum transmitting hose assembly during idling.
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
- Result:
Proceed to NEXT
Turn the ignition switch off and wait for at least 30 seconds.
NEXT
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Read the Pending DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- OK:
DTCs are not output
- Result:
Proceed to NEXT
NEXT
Disconnect the differential pressure sensor connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C140-3 (VC) - C141-69 (VCPX) Always Below 1 Ω C140-2 (PEX) - C141-92 (PEX) Always Below 1 Ω C140-1 (E2) - C141-68 (EPEX) Always Below 1 Ω C140-3 (VC) or C141-69 (VCPX) - Body ground and other terminals Always 10 kΩ or higher C140-2 (PEX) or C141-92 (PEX) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Replace the differential pressure sensor.
Put the engine in Inspection Mode (Maintenance Mode).
- Powertrain > Hybrid Control > Utility
-
Tester Display Inspection Mode - 50005 397 2103
Start the engine and allow it to idle until the engine coolant temperature reaches 75°C (167°F) or higher.
- Powertrain > Engine > Data List
-
Tester Display Coolant Temperature - 50003 372 205
Idle the engine for 7 minutes.
Run the engine at an engine speed of 2500 rpm for 2 minutes.
Turn the ignition switch off and wait for 30 seconds or more.
- Result:
Proceed to NEXT
NEXT