NR Series ENGINE CONTROL SFI SYSTEM P019015 Fuel Rail Pressure Sensor "A" Circuit Short to Battery or Open
DESCRIPTION
Refer to DTC P019011.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P019015 | Fuel Rail Pressure Sensor "A" Circuit Short to Battery or Open | Diagnosis Condition:
·
Ignition switch ON Abnormal condition: ·
The fuel pressure sensor output voltage is higher than 4.9 V. Malfunction Time: ·
3 seconds or more Trip logic: ·
1 trip detection logic Detection Conditions: ·
Continuous Sensors/components used for detection: ·
Fuel pressure sensor |
·
Open or short in fuel pressure sensor circuit ·
Fuel delivery pipe ·
ECM |
Comes on | DTC stored | SAE Code: P0193 |
- HINT:
-
When this DTC is output, check the fuel pressure (for high pressure side) in the Data List. Enter the following menus: Powertrain / Engine / Data List / High Fuel Pressure Sensor.
DTC No. High Fuel Pressure Sensor Malfunction P019015 Approximately 44 MPa or higher ·Short to +B in PR circuit
·Open in PR circuit
·Open in EPR circuit
-
If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.
MONITOR DESCRIPTION
When the ignition switch is turned to ON and the output voltage of the fuel pressure sensor is higher than 4.9 V for 3 seconds or more, the ECM determines that the fuel pressure sensor circuit is malfunctioning and illuminates the MIL and stores a DTC.
MONITOR STRATEGY
| 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.
Wait for 10 seconds or more [B].
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.
Proceed to the next screen and enter the DTC to be checked.
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 shows NORMAL, the system is normal.
·If the judgment result shows ABNORMAL, the system has a malfunction.
·[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
- 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 connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C32-2 (E2) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Fuel Pressure Sensor) |
Disconnect the fuel pressure sensor connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition C32-3 (PR) - Body ground Ignition switch ON 3.0 to 5.25 V
- Result:
Result Proceed to Higher than 5.25 V A 3.0 to 5.25 V B Below 3.0 V C
A
B
C
Disconnect the fuel 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 C32-3 (PR) or C78-103 (PR) - Other terminals Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Turn the ignition switch off.
Disconnect the fuel pressure sensor connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition C32-1 (VC) - C32-3 (PR) Ignition switch off 171 to 189 kΩ
- HINT:
-
As voltage is still supplied to the ECM after the ignition switch is turned off, this check cannot be performed correctly during the shut-down process.
- Result:
Proceed to OK NG
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel delivery pipe.
OK
NG
Disconnect the fuel 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 C32-1 (VC) - C32-3 (PR) or C78-136 (VCPR) - C78-103 (PR) Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the fuel 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 C32-3 (PR) - C78-103 (PR) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Disconnect the fuel 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 C32-2 (E2) - C78-135 (EPR) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG