DTC P107A-15: Fuel Rail Pressure Sensor (Low) Circuit Short to Battery or Open [08/2021 - ]: Procedure

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CHECK HARNESS AND CONNECTOR

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Front view of wire harness connector (to No. 2 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.

Disconnect the No. 2 fuel pressure sensor (for low pressure side) connector.
Turn the power switch on (IG).

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Condition	Specified Condition
D17-1 (VC) - D17-3 (E2)	Power switch on (IG)	4.75 to 5.25 V
D17-2 (PFL) - D17-3 (E2)	Power switch on (IG)	4.4 to 5.6 V

Turn the power 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	Condition	Specified Condition
D17-3 (E2) - Body ground	Power switch off	Below 1 Ω
D17-1 (VC) - D17-2 (PFL)	Power switch off	171 to 189 kΩ

HINT:

Perform "Inspection After Repair" after replacing the No. 2 fuel pressure sensor (for low pressure side).

Refer to INITIALIZATION [08/2021 - ]

Result

Proceed to
OK
NG

Result:

REPLACE NO. 2 FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE). Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

Result:

See step 2

CHECK HARNESS AND CONNECTOR (NO. 2 FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE) - ECM)

Disconnect the No. 2 fuel pressure sensor (for low 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
D17-3 (E2) - C88-61 (EPFL)	Always	Below 1 Ω
D17-2 (PFL) - C88-107 (PFL)	Always	Below 1 Ω
D17-2 (PFL) or C88-107 (PFL) - Other terminals	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPLACE ECM. Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR