DESCRIPTION
 The
fuel pressure sensor (for low pressure side) replaces the fuel pressure
with electrical signals and outputs them to the ECM. The ECM controls
the optimal fuel pressure for the operation conditions to reduce the
fuel pump power consumption and improve fuel economy. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note | | P107A11 |
Fuel Rail Pressure Sensor (Low) Circuit Short to Ground |
The
fuel pressure sensor (for low pressure side) output voltage is less
than 0.43 V for 3 seconds or more (1 trip detection logic). |
- Open or short in fuel pressure sensor (for low pressure side) circuit
- Fuel delivery pipe RH (fuel pressure sensor (for low pressure side))
- ECM
| Comes on |
DTC stored | SAE Code: P107C |
HINT: When
this DTC is output, check the fuel pressure (for low pressure side) in
the Data List. Enter the following menus: Powertrain / Engine / Data
List / Fuel Pressure (Low). |
DTC No. | Fuel Pressure (Low) |
Malfunction | | P107A11 |
Approximately 0 kPag |
- Short to ground in PFL circuit
- Short in PFL to EPFL circuit
- Open in VCPF 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
This
DTC is stored if the fuel pressure sensor (for low pressure side)
output voltage is out of the standard range due to an open or short in
the sensor circuit. MONITOR STRATEGY |
Related DTCs | P107C: Fuel rail pressure sensor range check (Low voltage) | |
Required Sensors/Components (Main) | Fuel pressure sensor (for low pressure side) | |
Required Sensors/Components (Related) |
- | | Frequency of Operation |
Continuous | | Duration |
3 seconds | | MIL Operation |
Immediate | | Sequence of Operation |
None | TYPICAL ENABLING CONDITIONS |
Monitor runs whenever the following DTCs are not stored |
None | | All of the following conditions are met |
- | | Battery voltage | 8 V or higher | |
Engine switch | On (IG) | |
Starter | Off | |
Time after engine start | 2 seconds or more | TYPICAL MALFUNCTION THRESHOLDS |
Fuel rail pressure sensor voltage | Less than 0.43 V | 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.
Click here 
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for at least 30 seconds.
- Start the engine.
- Idle the engine for 10 seconds or more [A].
- Turn the Techstream on
- Enter the following menus: Powertrain / Engine / Trouble Codes [B].
- 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: P107A11.
- Check the DTC judgment result.
|
Techstream 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:
WIRING DIAGRAM
 CAUTION / NOTICE / HINT
HINT: Read
freeze frame data using the Techstream. 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 HARNESS AND CONNECTOR |
|
*a | Front view of wire harness connector
(to Fuel Pressure Sensor (for Low Pressure Side)) |
HINT: Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
(a) Disconnect the fuel pressure sensor (for low pressure side) connector.
(b) Turn the engine switch on (IG). (c) Measure the voltage according to the value(s) in the table below.
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
C33-1 (VC) - C33-3 (E2) |
Engine switch on (IG) |
4.75 to 5.25 V | |
C33-2 (PFL) - C33-3 (E2) |
Engine switch on (IG) |
4.4 to 5.6 V | (d) Turn the engine switch off and wait for at least 30 seconds.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
C33-1 (VC) - C33-2 (PFL) |
Engine switch off | 171 to 189 kΩ |
HINT: Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side).
Click here
| OK |
 | REPLACE FUEL DELIVERY PIPE RH (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) |
|
NG |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE) - ECM) |
(a) Disconnect the fuel pressure sensor (for low pressure side) connector.
(b) Disconnect the ECM connector. (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
C33-1 (VC) - C56-90 (VC) |
Always | Below 1 Ω | |
C33-2 (PFL) or C56-134 (PFL) - Body ground and other terminals |
Always | 10 kΩ or higher |
| OK |
| REPLACE ECM |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
