Dtc P0087 Fuel Rail / System Pressure - Too Low. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 1Ad-Ftv. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE OF FUEL PRESSURE SENSOR

CHECK IF DTC OUTPUT RECURS

CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR - ECM)

DTC P0087 Fuel Rail / System Pressure - Too Low

DTC P0190 Fuel Rail Pressure Sensor Circuit

DTC P0192 Fuel Rail Pressure Sensor Circuit Low Input

DTC P0193 Fuel Rail Pressure Sensor Circuit High Input


DESCRIPTION

The ECM monitors the internal fuel pressure of the common rail using the fuel pressure sensor, and controls the suction control valve to regulate the internal pressure to the target pressure. The pressure sensor is a semiconductor that varies electrical resistance when pressure is applied to its silicon chip. This sensor outputs the voltage in proportion to the internal fuel pressure.
COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0087 Fuel Rail / System Pressure - Too Low

DTC No.
DTC Detection Condition
Trouble Area
P0087
Fuel pressure sensor output voltage stays at fixed value
(1-trip detection logic)
  1. Open or short in fuel pressure sensor circuit
  2. Fuel pressure sensor
  3. ECM
P0190
Fuel pressure sensor output voltage is 0.55 V or less, or 4.9 V or more for 0.5 seconds
(1-trip detection logic)
  1. Open or short in fuel pressure sensor circuit
  2. Fuel pressure sensor
  3. ECM
P0192
Fuel pressure sensor output voltage is 0.55 V or less for 0.5 seconds
(1-trip detection logic)
  1. Open or short in fuel pressure sensor circuit
  2. Fuel pressure sensor
  3. ECM
P0193
Fuel pressure sensor output voltage is 4.9 V or more for 0.5 seconds
(1-trip detection logic)
  1. Open or short in fuel pressure sensor circuit
  2. Fuel pressure sensor
  3. ECM

УКАЗАНИЕ:
  1. For more information on the fuel pressure sensor and common rail system, refer to the system description (See page Нажмите здесь).
  2. When DTC P0087, P0190, P0192 and/or P0193 is set, check the internal fuel pressure of the common rail by entering the following menus on the intelligent tester: Powertrain / Engine and ECT / Data List / Fuel Press.

Reference:
Engine Speed
Fuel Pressure
Idling
Approximately 35 to 45 MPa
3000 rpm (No engine load)
Approximately 57 to 68 MPa

MONITOR DESCRIPTION

  1. P0087 (Fuel pressure sensor output stays at fixed value):
    Under normal conditions, the internal fuel pressure of the common rail usually fluctuates 1 to 2 MPa (10 to 20 kgf/cm2, 145 to 290 psi) even when the driving conditions are constant. The internal fuel pressure is approximately 35 to 45 MPa (357 to 459 kgf/cm2, 5076 to 6527 psi) when idling, and it increases to approximately 57 to 68 MPa (581 to 693 kgf/cm2, 8267 to 9862 psi) when running the engine at 3000 rpm. This DTC is set if there is no fluctuation of the fuel pressure.
    If this DTC is set, the ECM enters fail-safe mode and limits engine power. The fail-safe mode continues until the ignition switch is turned off.

    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0087 Fuel Rail / System Pressure - Too Low

  1. P0190, P0192 and P0193 (Open or short in fuel pressure sensor circuit):
    These DTCs are set if the fuel pressure sensor output voltage is out of the standard range and an open or short malfunction of the sensor circuit has occurred.
    If these DTCs are set, the ECM enters fail-safe mode and limits the engine power. The fail-safe mode continues until the ignition switch is turned off.

MONITOR STRATEGY


P0087:
Required Sensors
Fuel pressure sensor
Frequency of operation
Continuous
Duration
1 second
MIL operation
1 driving cycle

P0190:
Required Sensors
Fuel pressure sensor
Frequency of operation
Continuous
Duration
0.5 seconds
MIL operation
1 driving cycle

P0192:
Required Sensors
Fuel pressure sensor
Frequency of operation
Continuous
Duration
0.5 seconds
MIL operation
1 driving cycle

P0193:
Required Sensors
Fuel pressure sensor
Frequency of operation
Continuous
Duration
0.5 seconds
MIL operation
1 driving cycle

TYPICAL ENABLING CONDITIONS


P0087:
Item
Specification
Minimum
Engine speed
500 rpm
Battery voltage
8 V
Fuel volume
5 mm3
The monitor will not run if the fuel pressure sensor circuit (P0190, P0192 and P0193) is malfunctioning.

TYPICAL MALFUNCTION THRESHOLDS


P0087:
Detection Criteria
Threshold
Changing value of fuel pressure
Virtually no fluctuation

P0190:
Detection Criteria
Threshold
Fuel pressure sensor output voltage
Less than 0.55 V or more than 4.9 V

P0192:
Detection Criteria
Threshold
Fuel pressure sensor output voltage
Less than 0.55 V

P0193:
Detection Criteria
Threshold
Fuel pressure sensor output voltage
More than 4.9 V

WIRING DIAGRAM


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0087 Fuel Rail / System Pressure - Too Low


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (See page Нажмите здесь) and initialization (See page Нажмите здесь).
УКАЗАНИЕ:
  1. After completing repairs, check that P0087, P0190, P0192 and/or P0193 is not set again.
  2. Read freeze frame data using the intelligent tester. 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, and other data from the time the malfunction occurred.
1.READ VALUE OF FUEL PRESSURE SENSOR

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press.

  1. Read the values.

    OK:
    The internal fuel pressure of the common rail is within the specification below.
    Engine Speed
    		Fuel Pressure
    Idling
    		Approximately 35 to 45 MPa
    3000 rpm (No engine load)
    		Approximately 57 to 68 MPa


NG
Перейдите к шагу 3
OK


2.CHECK IF DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC / Clear.

  1. Clear the DTCs (See page Нажмите здесь).

  1. Let the engine idle for 60 seconds, and then repeat quick engine RPM accelerations (to 2500 rpm) for 30 seconds.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0087, P0190, P0192 or P0193 is output
    		A
    DTC is not output
    		B


B
CHECK FOR INTERMITTENT PROBLEMS (Нажмите здесь)
A

REPLACE ECM (Нажмите здесь)

3.CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR - ECM)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0087 Fuel Rail / System Pressure - Too Low

  1. Disconnect the fuel pressure sensor connector.

  1. Disconnect the ECM connector.

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

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    B43-2 (PR) - B31-67 (PCR1)
    		Always
    		Below 1 Ω
    B43-3 (VC) - B31-69 (VCM)
    		Always
    		Below 1 Ω
    B43-1 (E2) - B31-91 (E2M)
    		Always
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    B43-2 (PR) or B31-67 (PCR1) - Body ground
    		Always
    		10 kΩ or higher
    B43-3 (VC) or B31-69 (VCM) - Body ground
    		Always
    		10 kΩ or higher
    B43-1 (E2) or B31-91 (E2M) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the fuel pressure sensor connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PRESSURE SENSOR - ECM)
OK

REPLACE COMMON RAIL ASSEMBLY (Нажмите здесь)