DTC P0190-11: Fuel Rail Pressure Sensor "A" Circuit Short to Ground [10/2022 - ]: Procedure

HINT: 

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

1. Disconnect the fuel pressure sensor (for high pressure side) connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Fuel Pressure Sensor (for High Pressure Side))

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   C87-1 (VC) - C87-2 (E2)	Ignition switch ON	4.5 to 5.5 V
   C87-3 (PR) - C87-2 (E2)	Ignition switch ON	3.0 to 5.0 V

4. Turn the ignition switch off and wait for at least 30 seconds.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C87-1 (VC) - C87-3 (PR)	Ignition switch off	171 to 189 kΩ

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).

   Refer to INITIALIZATION [10/2022 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) 

Refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

Result: 

NG 

See step  2

1. Disconnect the fuel pressure sensor (for high pressure side) connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C87-1 (VC) - C88-96 (VCPR)	Always	Below 1 Ω
   C87-3 (PR) or C88-98 (PR) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

Refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR