2005 TOYOTA AVENSIS sensor

05±570
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0093FUEL SYSTEM LEAK DETECTED ± LARGE LEAK
HINT:

For more information on the common rail system, see page 05±517.

If P0093 is present, use the diagnostic trouble code matrix for fuel sys\
tem, see page 05±517.
CIRCUIT DESCRIPTION
Refer to description on page 05±517.
DTC No.DTC Detection ConditionTrouble Area
P0093Fuel leaks in high±pressure area.

Fuel line between supply pump and common rail

Fuel line between common rail and injector

Supply pump

Common rail

Injector (P1238 is set simultaneously)

Pressure discharge valve

Open or short in EDU circuit (P0200 is set simultaneously 

Open or short in injector circuit (P0200 and P1238 are set
simultaneously)

EDU (P0200 is set simultaneously 

ECM
HINT:
After confirming DTC P0093, use the hand±held tester to confirm the fuel rail pressure fro\
m the ºDIAGNOSIS
/ OBD/MOBD / DATA LIST / ALL / COMN RAIL PRESSº.
Engine SpeedFuel Pressure (MPa)
IdlingApprox. 30 to 40
Running the engine at 2,500 rpm (No engine load)Approx. 50 to 100
MONITOR DESCRIPTION
P0093 (Fuel leaks in high±pressure area):
This DTC stands for fuel leaks is existing in high±pressure area in the c\
ommon rail system. The ECM
constantly monitors the internal fuel pressure of the common rail after the engine is started, and the ECM
then will set this DTC if the decreasing rate of the internal fuel press\
ure is large when injecting the fuel.
In the common rail system, high±pressure fuel (approx. 30 to 180 MPa (\
306 to 1,835 kgf/cm
2, 4.351 to
26,106 psi)) is always applied to the high±pressure area including the su\
pply pump, common rail, injector
and piping. The ECM adjusts the suction control valve opening angle to obtain the target internal fuel pres-
sure.
If this DTC is present, the ECM enters fail±safe mode and permits drivi\
ng the vehicle for extra 1 minute before
stopping both the fuel injection and supply pump operation, then stops the engine\
. The fail±safe mode will
continue until the ignition switch is turned OFF.
MONITOR STRATEGY
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration1 sec.
CHK ENG operation1 driving cycle
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
Engine speed600 rpm±
The monitor will not run if the fuel pressure sensor, or suction control valve circuit, or pressure discharge valve is malfu\
nct ioning
05CPF±01

±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±557
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0087FUEL RAIL/SYSTEM PRESSURE ± TOO
LOW
DTCP0190FUEL RAIL PRESSURE SENSOR CIRCUIT
DTCP0192FUEL RAIL PRESSURE SENSOR CIRCUIT LOW INPUT
DTCP0193FUEL RAIL PRESSURE SENSOR CIRCUIT HIGH INPUT
HINT:

For more information on the fuel pressure sensor and the common rail system\
, see page 05±517.

If P0087, P0190, P0192 and/or P0193 are present, use the diagnostic troubl\
e code matrix for fuel sys-
tem, see page 05±517.
05CPD±01

A81476
Fuel Pressure (MPa)
Output Voltage (V)
0.55
0
190 3.89 4.44
PR2 (Sub) PR (Main)
E2SPR2 VC
PR
E2
VCS Main
Sub
4.90
Detect P0193
Detect P0192
0.85 1.40 Property of Output VoltageInternal Structure of the Pressure Sensor
(Duplicate System) 05±558
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
CIRCUIT DESCRIPTION
The ECM monitors internal fuel pressure of common rail using the fuel pressure sensor and controls the suc-
tion control valve to regulate the internal pressure to the target pressure(approx. 30 to 180 MPa (306 to 1,835
kgf/cm
2, 4.351 to 26,106 psi)).
The pressure sensor is a semiconductor pressure sensor that varies electric resistance when applying pres-
sure to its silicon. This sensor outputs voltage in proportion to the internal fuel pressure. The sensor has been
designed as a duplicate circuit, and its main (PR) circuit is used under normal condition. Even if either sensor
is failed, another normal sensor will be used to monitor the internal fuel pressure.
DTC No.DTC Detection ConditionTrouble Area
P0087Fuel pressure sensor output stays at fixed value.
P0190
Condition (a) continues for 0.5 sec.:
(c) Fuel pressure sensor output voltage is º0.55 V or lessº or
º4.9 V or moreº.

Open or short in fuel pressure sensor circuit
Fl
P0192Condition (a) continues for 0.5 sec.:
(a) Fuel pressure sensor output voltage is 0.55 V or less.
Fuel pressure sensor

ECM
P0193Condition (a) continues for 0.5 sec.:
(a) Fuel pressure sensor output voltage is 4.9 V or more.
HINT:
After confirming DTC ºP0087, P0190, P0192 and P0193º, use the hand±held tester to confirm internal the
fuel pressure of the common rail from the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COMN RAIL
PRESSº.
Engine SpeedFuel Pressure (MPa)
IdlingApprox. 30 to 40
Running the engine at 2,500 rpm (No engine load)Approx. 50 to 100

A82882
Fuel Pressure
Engine Speed
Normal
Abnormal P0087 Malfunction Detection
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±559
AVENSIS REPAIR MANUAL (RM1018E)
MONITOR DESCRIPTION
P0087 (Fuel pressure sensor output stays at fixed value):
Under normal condition, internal fuel pressure of the common rail usually fluctuates 1 to 2 MPa (10 to 20
kgf/cm
2, 145 to 290 psi) even if the driving condition is constant. The internal fuel pressure is approximately
30 to 40 MPa (306 to 408 kgf/cm
2, 4,351 to 5,801 psi) at idling, and it increases to approx. 50 to 100 MPa
(510 to 1,020 kgf/cm
2, 7,251 to 14,503 psi) when running the engine at 2,500 rpm. This DTC code is set if
there is no fluctuation at the internal fuel pressure.
If this DTC is present, the ECM enters fail±safe mode and limits the engine power. The fail±safe mode will
continue until the ignition switch is turned OFF.
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. The DTCs stand
for open or short malfunction of the sensor circuit.
If these DTCs are present, the ECM enters fail±safe mode and limits the engine power. The fail±safe mode
will continue until the ignition switch is turned OFF.
MONITOR STRATEGY
P0087:
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration1 sec.
CHK ENG operation1 driving cycle
P0190:
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration0.5 sec.
CHK ENG operation1 driving cycle
P0192:
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration0.5 sec.
CHK ENG operation1 driving cycle

05±560
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
P0193:
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration0.5 sec.
CHK ENG operation1 driving cycle
TYPICAL ENABLING CONDITIONS
P0087:
ItemSpecificationItemMinimumMaximum
Engine speed500 rpm±
Battery voltage8 V±
Fuel quantify5 mm3/st±
The monitor will not run if the fuel pressure sensor circuit (P0190, P0192 and P0193) is malfunction
TYPICAL MALFUNCTION THRESHOLDS
P0087:
Detection CriteriaThreshold
Changing value of fuel pressureVirtually no fluctuation
P0190:
Detection CriteriaThreshold
Fuel pressure sensor output voltageLess than 0.55 V or more than 4.9 V
P0192:
Detection CriteriaThreshold
Fuel pressure sensor output voltageLess than 0.55 V
P0193:
Detection CriteriaThreshold
Fuel pressure sensor output voltageMore than 4.9 V

A80998
F16
Fuel Pressure Sensor
5
P
PCR1ECM
E1326 5
EB1
2
P±B
PCR2
E1333 2
EB1
1
R±W
VCS
E122 1
EB1
6
R±W
VC
E1318 6
EB1
3
BR
E2S
E121 3
EB1
4
BR
E2
E1328 4
EB1 PR
PR2P
P±B
R±W
R±W
BR
BR VC
E2S VCS
E2
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±561
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

After completing repair, confirm P0087 is not set again.

If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may be open.

Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle
was running or stopped, the engine was warmed up or not, etc. at the time of the malfunction.
1 READ VALUE OF HAND±HELD TESTER(FUEL PRESSURE)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch ON.
(c) Start the engine.
(d) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COMN RAIL PRESSº.
(e) Check that internal fuel pressure of the common rail is within specification below.
Reference:
Engine SpeedFuel Pressure (MPa)
IdlingApprox. 30 to 40
Running the engine at 2,500 rpm (No engine load)Approx. 50 to 100
NG Go to step 3
OK

A80452
PCR1E13
ECM Connector
E12PCR2
E2VCS
E2S
VC
A80453
E2
PR2
F16
Wire Harness Side
Fuel Pressure Sensor Connector
VCS
PRE2S
VC
05±562
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
2READ OUTPUT DTC(FUEL PRESSURE SENSOR DTCS ARE OUTPUT AGAIN)
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Select the item ºDIAGNOSIS / OBD/MOBD / DTC INFO / CLEAR CODESº.
(d)Clear the DTCs.
(e)Let the engine idle for 60 seconds and perform quick acceleration to 2,5\
00 rpm for 30 seconds.
(f)Select the item ºDIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODESº.\
(g)Read the DTCs. Result:
Display (DTC output)Proceed to
DTC ºP0087, P0190, P0192 and/or P0193º are output.A
DTC ºP0087, P0190, P0192 and/or P0193º are not output.B
BCHECK FOR INTERMITTENT PROBLEMS (See page 05±528)
A
REPLACE ECM (See page 10±65)
3CHECK HARNESS AND CONNECTOR(FUEL PRESSURE SENSOR ± ECM)
(a)Disconnect the F16 fuel pressure sensor connector.
(b)Disconnect the E12 and E13 ECM connectors.
(c)Check for continuity between the wire harness side con- nector.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
PCR1 (E13±26) ± PR (F16±5)
PCR2 (E13±33) ± PR2 (F16±2)
VCS (E12±2) ± VCS (F16±1)ContinuityVC (E13±18) ± VC (F16±6)Continuity
E2 (E13±28) ± E2 (F16±4)
E2S (E12±1) ± E2S (F16±3)
Standard (Check for short):
Symbols (Terminal No.)Specified condition
PCR1 (E13±26) or PR (F16±5) ± Body ground
PCR2 (E13±33) or PR2 (F16±2) ± Body ground
VCS (E12±2) or VCS (F16±1) ± Body groundNocontinuityVC (E13±18) or VC (F16±6) ± Body groundNo continuity
E2 (E13±28) or E2 (F16±4) ± Body ground
E2S (E12±1) or E2S (F16±3) ± Body ground
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE COMMON RAIL ASSY (FUEL PRESSURE SENSOR) (See page 11±78)

A79413
From
Speed SensorSkid
Control
ECU4±Pulse
Combination
Meter4±Pulse
ECM 05±640
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0500 VEHICLE SPEED SENSOR ºAº
CIRCUIT DESCRIPTION
The speed sensor for skid control ECU detects the wheel speed and sends the appropriate signals to the
skid control ECU.
The skid control ECU converts these signals into a 4±pulse signal and outputs it to the combination meter.
After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit in-
side the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based
on the frequency of these pulse signals.
DTC No.DTC Detection ConditionTrouble Area
P0500
Conditions (a) and (b) continue for 7 sec. or more
(2 trip detection logic):
(a) THW less than 70C (158F)
(b) Engine speed is greater than 2,000 rpm but less than 3,500
rpm
Open or short in speed sensor circuit

Speed sensor

Combination meter

ECM

Skid control ECU
05B5L±03