M20D-FKS ENGINE CONTROL SFI SYSTEM P019011 Fuel Rail Pressure Sensor "A" Circuit Short to Ground
DESCRIPTION
The fuel pressure sensor (for high pressure side) is installed on the fuel delivery pipe (for high pressure side). The fuel pressure sensor (for high pressure side) changes the fuel pressure for high pressure side into an electrical signal and sends the signal to the ECM. Then the ECM controls the pump discharge using this feedback to maintain the fuel's target pressure between 2.4 and 20 MPa (25 and 204 kgf/cm2, 348 and 2900 psi).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P019011 | Fuel Rail Pressure Sensor "A" Circuit Short to Ground | The fuel pressure sensor (for high pressure side) output voltage is less than 0.2933 V for 3 seconds or more (1 trip detection logic). | ·
Open or short in fuel pressure sensor (for high pressure side) circuit ·
Fuel pressure sensor (for high pressure side) ·
ECM |
Comes on | DTC stored | SAE: P0192 |
- HINT:
-
When a DTC is output, check the Data List item "Fuel Pressure (High)" using the GTS.
DTC No. Fuel Pressure (High) Malfunction P019011 Approximately 0 kPag ·Short to ground in PR circuit
·Short in PR to EPR circuit
·Open in VCPR circuit
-
If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.
MONITOR DESCRIPTION
This DTC is stored if the fuel pressure sensor (for high pressure side) output voltage is out of the standard range due to an open or short in the sensor circuit.
Example:
If the fuel pressure sensor (for high pressure side) output voltage is less than 0.2933 V for 3 seconds or more, the ECM will illuminate the MIL and store this DTC.
MONITOR STRATEGY
| Required Sensors/Components | Fuel pressure sensor (for high pressure side) |
| 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.
Start the engine [A].
Idle the engine for 10 seconds [B].
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
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: P019011.
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 [C] again.
·[A] to [C]: 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 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
- 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
| *a | Front view of wire harness connector (to Fuel Pressure Sensor (for High Pressure Side)) |
- HINT:
-
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
Disconnect the fuel pressure sensor (for high pressure side) connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition F2-1 (VC) - F2-2 (E2) Ignition switch ON 4.5 to 5.5 V F2-3 (PR) - F2-2 (E2) Ignition switch ON 3.0 to 5.25 V
Turn the ignition switch off and wait for at least 30 seconds.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Switch Condition Specified Condition F2-1 (VC) - F2-3 (PR) Ignition switch off 171 to 189 kΩ
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).
- Result:
Proceed to OK NG
OK
NG
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 F2-1 (VC) - C71-179 (VCPR) Always Below 1 Ω F2-3 (PR) or C71-177 (PR) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG