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). |
| 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) / Fuel Pressure 2.
DTC No. | Fuel Pressure (Low) / Fuel Pressure 2 | Malfunction |
---|---|---|
P107A11 | Approximately 0 kPag |
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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:
Click here
Click here
HINT:
Techstream Display | Description |
---|---|
NORMAL |
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ABNORMAL |
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INCOMPLETE |
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HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
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 |
---|---|---|
C21-1 (VC) - C21-3 (E2) | Engine switch on (IG) | 4.75 to 5.25 V |
C21-2 (PFL) - C21-3 (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 |
---|---|---|
C21-1 (VC) - C21-2 (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)) |
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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 |
---|---|---|
C21-1 (VC) - C32-90 (VC) | Always | Below 1 Ω |
C21-2 (PFL) or C32-134 (PFL) - Body ground and other terminals | Always | 10 kΩ or higher |
OK | REPLACE ECM |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |