M20F-FXS, M20G-FXS ENGINE CONTROL SFI SYSTEM P01902A Fuel Rail Pressure Sensor "A" Signal Stuck in Range P019064 Fuel Rail Pressure Sensor "A" Signal Plausibility Failure
DESCRIPTION
Refer to DTC P019011.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Note |
|---|---|---|---|---|---|
| P01902A | Fuel Rail Pressure Sensor "A" Signal Stuck in Range | When target high pressure side fuel pressure changes, the change in fuel pressure sensor value is abnormal (2 trip detection logic). | ·
Fuel pressure ·
Fuel pressure sensor (for high pressure side) ·
Open or short in fuel pressure sensor (for high pressure side) circuit ·
ECM |
Comes on | SAE Code: P0191 |
| P019064 | Fuel Rail Pressure Sensor "A" Signal Plausibility Failure | Although engine has been stopped and left as is for a long time, high pressure side fuel pressure is higher or lower than threshold (2 trip detection logic). | ·
Fuel pressure ·
Fuel pressure sensor (for high pressure side) ·
Open or short in fuel pressure sensor (for high pressure side) circuit ·
ECM |
Comes on | SAE Code: P0191 |
MONITOR DESCRIPTION
- Fuel Pressure Sensor Stuck Monitor
-
If the fuel pressure sensor (for high pressure side) value does not follow the change in the target high pressure side fuel pressure, it is judged as a malfunction. If this malfunction is detected in 2 consecutive driving cycles, the ECM will illuminate the MIL and store DTC P01902A.
- Fuel Pressure Sensor Correlation Monitor with Barometric Pressure
-
If the fuel pressure sensor (for high pressure side) value is less than or higher than the threshold value when a cold start is performed after the engine has been warmed up and then stopped, it is judged as a malfunction has occurred. If this malfunction is detected for 2 consecutive driving cycles, the ECM will illuminate the MIL and store DTC P019064.
MONITOR STRATEGY
| Required Sensors/Components (Main) | Fuel pressure sensor (for high pressure side) |
| Required Sensors/Components (Related) | Atmospheric pressure sensor (ECM) |
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
- HINT:
- ·
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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 [A].
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 [B].
With the engine running, drive the vehicle for 15 minutes or more [C].
- CAUTION:
-
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
- HINT:
-
If the engine stops, further depress the accelerator pedal to restart the engine.
Turn the ignition switch off.
With the engine stopped, leave the vehicle as is for 5 hours or more [D].
Turn the ignition switch to ON [E].
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes [F].
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: P01902A or P019064.
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 [B] through [F] again.
·[A] to [F]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
·When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
Vehicle Control History may be stored in the hybrid vehicle control ECU assembly 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 assembly, 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 P01902A or P019064 is output A DTC P01902A or P019064 and P008700, P008800, P017100 or P017200 are output DTC P01902A or P019064 and other DTCs are output B
- HINT:
- ·
If DTC P01902A or P019064 and P008700, P008800, P017100 or P017200 are output simultaneously, troubleshoot for DTC P01902A or P019064 first.
·If any DTCs other than P01902A or P019064 are output, troubleshoot those DTCs first.
A
B
Check around and beneath the vehicle for fuel leaks, fumes, etc.
- OK:
No fuel leaks present.
- Result:
Proceed to OK NG
OK
NG
Put the engine in Inspection Mode (Maintenance Mode).
- Powertrain > Hybrid Control > Utility
-
Tester Display Inspection Mode - 50005 397 2103
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
Enter the following menus.
- Powertrain > Engine > Active Test
-
Active Test Display Control the Target Fuel Pressure Offset -
Data List Display Coolant Temperature High Fuel Pressure Sensor - 50004 372 6 205,47
Check the value of the Data List item "High Fuel Pressure Sensor" when the target fuel pressure is increased and decreased using the Active Test.
- Result:
Result Proceed to "High Fuel Pressure Sensor" value follows the change in target fuel pressure A "High Fuel Pressure Sensor" value does not follow the change in target fuel pressure B
A
B
Disconnect the fuel pressure sensor (for high pressure side) connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition Z3-3 (PR) - C141-97 (PR) Always Below 1 Ω Z3-2 (E2) - C141-96 (EPR) Always Below 1 Ω Z3-3 (PR) or C141-97 (PR) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).
- Result:
Proceed to NEXT
NEXT
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
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
- Result:
Result Proceed to DTCs are not output A DTC P01902A or P019064 is output B
A
B
Repair or replace the wire harness or connector.
- Result:
Proceed to NEXT
NEXT
- Result:
Proceed to NEXT
NEXT
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).
- Result:
Proceed to NEXT
NEXT
Repair or replace the fuel leak point.
- Result:
Proceed to NEXT
NEXT
Clear the DTCs.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
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