Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Fuel Rail Pressure Sensor "A" Circuit Short to Ground (P019011)

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / M20a-fks (engine Control) / Sfi System / Fuel Rail Pressure Sensor "A" Circuit Short to Ground (P019011)

DESCRIPTION

The fuel pressure sensor (for high pressure side) is installed on the fuel delivery pipe (for high pressure side). The fuel pressure sensor (for high pressure side) changes the fuel pressure for high pressure side into an electrical signal and sends the signal to the ECM. Then the ECM controls the pump discharge using this feedback to maintain the fuel's target pressure between 2.4 and 20 MPa (25 and 204 kgf/cm2, 348 and 2900 psi).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

P019011

Fuel Rail Pressure Sensor "A" Circuit Short to Ground

Diagnosis condition:

  • 5 seconds or more have elapsed after the engine started

Abnormal condition:

  • The fuel pressure sensor (for high pressure side) output voltage is less than 0.2933 V.

Malfunction time:

  • 3 seconds or more

Trip logic:

  • 1 trip detection logic

Detection conditions:

  • Continuous

Sensors/components used for detection:

  • Fuel pressure sensor (for high pressure side)
  • Open or short in fuel pressure sensor (for high pressure side) circuit
  • Fuel pressure sensor (for high pressure side)
  • ECM

Comes on
  • SAE Code: P0192
  • DTC for Mexico Models: Applies

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 / Fuel Pressure (High).

DTC No.

Fuel Pressure (High)

Malfunction

P019011

Approximately 0 kPag
  • Short to ground in PR circuit
  • Short in PR to EPR circuit
  • Open in VCPR circuit

If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

Click here

MONITOR DESCRIPTION

5 seconds or more after the engine has started, if the output voltage of the fuel pressure sensor (for high pressure side) is less than 0.2933 V for 3 seconds or more, the ECM determines that the fuel pressure sensor (for high pressure side) circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs

P0192: Fuel rail pressure sensor range check (Low voltage)

Required Sensors/Components (Main)

Fuel pressure sensor (for high 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

-

Auxiliary battery voltage

8 V or higher

Ignition switch

ON

Starter

Off

Time after engine start

5 seconds or more

TYPICAL MALFUNCTION THRESHOLDS

Fuel rail pressure sensor voltage

Less than 0.2933 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

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Start the engine [A].
  7. Idle the engine for 10 seconds [B].
  8. Turn the GTS on.
  9. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  10. 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.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Proceed to the next screen and enter the DTC to be checked.
  13. 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 is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system has a malfunction.
    • If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
    • [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 auxiliary 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

1.

READ VALUE USING GTS (FUEL PRESSURE (HIGH))

HINT:

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

(a) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Fuel Pressure (High)

(b) Record the Fuel Pressure (High) value.

(c) Turn the ignition switch off.

(d) Disconnect the fuel pressure sensor (for high pressure side) connector.

(e) Turn the ignition switch to ON.

(f) Enter the following menus.

Powertrain > Engine > Data List

Tester Display

Fuel Pressure (High)

(g) Compare the Data List value when the connector is connected and when the connector is not connected.

Result

Proceed to

The value of Fuel Pressure (High) changes

A

The value of Fuel Pressure (High) does not change

B
B

GO TO STEP 4

A

2.

CHECK TERMINAL VOLTAGE (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE))

*a

Front view of wire harness connector

(to Fuel Pressure Sensor (for High Pressure Side))

(a) Disconnect the fuel pressure sensor (for high pressure side) connector.

(b) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

Z3-1 (VC) - Body ground

Ignition switch ON

4.75 to 5.25 V

HINT:

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

Click here

OK

REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)

NG

3.

CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) - ECM)

(a) Disconnect the fuel pressure sensor (for high 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

Z3-1 (VC) - C76-98 (VCPR)

Always

Below 1 Ω
OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.

CHECK TERMINAL VOLTAGE (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE))

*a

Front view of wire harness connector

(to Fuel Pressure Sensor (for High Pressure Side))

(a) Disconnect the fuel pressure sensor (for high pressure side) connector.

(b) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

Z3-3 (PR) - Body ground

Ignition switch ON

3.0 to 5.25 V
OK

REPLACE ECM

NG

5.

CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) - ECM)

(a) Disconnect the fuel pressure sensor (for high 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

Z3-3 (PR) or C76-97 (PR) - Body ground and other terminals

Always

10 kΩ or higher
OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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