2005 TOYOTA AVENSIS fuel pressure

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DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 51
AVENSIS Supplement (RM 1045E)
6 CHECK CYLINDER COMPRESSION PRESSURE OF MISFIRING CYLINDER
(See page 14−1 )
NG REPAIR OR REPLACE
OK
7 CHECK VALVE CLEARANCE OF MISFIRING CYLINDER (See page 14− 6)
NG ADJUST VALVE CLEARANCE
(See page 14− 6)
OK
8 REPLACE FUEL INJECTOR OF MISFIRING CYLINDER
(a) Read the DTC and check which of the cylinders causes the misfiring DTC (see page 11− 7) .
(b) Remove the injector of the misfiring cylinder and other normal injector (see page 11−1 3) .
(c) Swap the injector of misfiring cylinder for the normal injector.
GO
9 PERFORM CONFIRMATION DRIVING PATTERN
HINT:
Clear all DTCs prior to performing the confirmation driving pattern.GO
10 READ OUTPUT DTC(SEE IF MISFIRE DTCS ARE OUTPUT AGAIN)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Select the item: DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES.
(d) Read the DTCs using the hand −held tester.
Result:
Display (DTC output)Proceed to
P0300, P030 1, P0302, P0303 and/or P0304A
No outputB
B REPLACE FUEL INJECTOR ASSY
A

05−1 52
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
11 SWITCH STEP BY NUMBER OF MISFIRE CYLINDER(REFER TO RESULT OF STEP
4)
S If the result of step 4 is ” 1 or 2 cylinders”, proceed to A.
S If the result of step 4 is ”more than 3 cylinders”, proceed to B.
B CHECK FOR INTERMITTENT PROBLEMS
A
1 2 CHECK VALVE TIMING(CHECK FOR LOOSE AND JUMPED TOOTH OF TIMING
BELT)
NG ADJUST VALVE TIMING
OK
1 3 CHECK FUEL PRESSURE(LOW PRESSURE) (See page 11− 4)
NG CHECK AND REPLACE FUEL PUMP,
PRESSURE REGULATOR, FUEL PIPE LINE AND
FILTER
OK
1 4 CHECK FUEL PRESSURE(HIGH PRESSURE) (See page 11− 4)
NG CHECK AND REPLACE FUEL PUMP, FUEL
PRESSURE SENSOR, WIRING AND FUEL
LEAKAGE
OK

05−136
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P0200 INJECTOR CIRCUIT / OPEN
DTC P0201INJECTOR CIRCUIT / OPEN−(CYLINDER1)
DTC P0202 INJECTOR CIRCUIT / OPEN−(CYLINDER 2)
DTC P0203 INJECTOR CIRCUIT / OPEN−(CYLINDER 3)
DTC P0204 INJECTOR CIRCUIT / OPEN−(CYLINDER 4)
CIRCUIT DESCRIPTION
The Electronic Driver Unit (EDU) has been adopted to operate the injector at high speed. The EDU enables
the injector to drive in high−speed rate under high−pressure fuel condition using its internal DC/DC converter
that provides high voltage and quick−charging system.
The ECM constantly monitors the EDU. If the ECM detects abnormal condition, it will stop the engine.
DTC No.DTC Detection ConditionTrouble Area
P0200No IJF signals to ECM despite crankshaft rotating10 times
(1trip detection logic)
SOpen or short in EDU circuit
SEDU (Injector driver)
SFuel injector assy
SECM
P0200No IJF signals to ECM despite crankshaft rotating 20 times
during cranking (2 trip detection logic)
SOpen or short in EDU circuit
SEDU (Injector driver)
SFuel injector assy
SECM
P0201
P0202
P0203
P0204
No IJF signals of each cylinder to ECM 20 times successively
(1trip detection logic)
SOpen or short in EDU circuit
SEDU (Injector driver)
SFuel injector assy
SECM
05CKG−02

A14687
(V)
4.5
0.5
(0)019.6
(200)MPa
(kgf/cm2)
Output Voltage
Fuel Pressure
A00309
F16
Fuel Pressure Sensor
18
E13ECM
5V
E1 1R−W
23
Y−G 2
3
BR28
E2 PRVC
VOUT
GNDE13
E13 VCC
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−127
AVENSIS Supplement (RM1045E)
DTC P0190 FUEL RAIL PRESSURE SENSOR CIRCUIT
CIRCUIT DESCRIPTION
The fuel pressure sensor is installed on a fuel delivery pipe and
detects the fuel pressure. It controls of feedback the pump dis-
charge in order to keep the fuel at target pressure 8 to 13 MPa
(81.6 to 132.6 kgf/cm
2, 1,160 to 1,885 psi) by the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0190Open or short in fuel pressure sensor circuit
SOpen or short in fuel pressure sensor circuit
SFuel pressure sensor
SECM
HINT:
After confirming DTC P0190, use the hand−held tester to confirm the fuel pressure in the delivery pipe in
DIAGNOSIS / OBD/MOBD / DATA LIST / ALL.
Fuel Pressure (MPa)Malfunction
Approximately 0SPR circuit short
19.6 or more
SVC circuit open or short
SPR circuit open
SE2 circuit open
WIRING DIAGRAM
05CKE−02

A59674
F16
VCC (+)GND (−)
Fuel Pressure Sensor Connector
Wire Harness Side:
VOUT
Front View
05
−1 28
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
S If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
S Read freeze frame data using the hand−held tester . Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, 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.
1 READ VALUE OF HAND −HELD TESTER(FUEL PRESSURE)
(a) Connect the hand −held tester to the DLC3.
(b) Start the engine.
(c) Turn the hand −held tester ON.
(d) On the hand −held tester, select the item: DIAGNOSIS / OBD/MOBD / DATA LIST / ALL / FUEL PRESS.
Read the values.
Pressure: 8 to 13 MPa (8 1.6 to 132.6 kgf/cm
2 , 1,1 60 to 1,885 psi)
Result:
Fuel Pressure (MPa)Proceed to
19.6 or moreA
0.0B
OK (8 to 13 MPa (81.6 to 132.6 kgf/cm 2, 1,160 to 1,885 psi)) (*1)C
*1: The value must be changed when the engine is run or stopped.
B Go to step 3
C CHECK FOR INTERMITTENT PROBLEMS(See Page 05 −7)
A
2 INSPECT FUEL PRESSURE SENSOR(VCC VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the specified terminals of the F16 fuel pressure sensor connector.
Standard:
Tester ConnectionSpecified Condition
VCC (F16 −1) −GND (F16 −3)4.5 to 5.5 V
NG Go to step 4
OK

A76903
PR (+)E2 (−)
ECM Connector
E13
A81699
VC
E13
ECM Connector
E2
PR
A59674
F16VCC
GND Fuel Pressure Sensor Connector Wire Harness Side:
VOUT
Front View
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−129
AVENSIS Supplement (RM1045E)
3 INSPECT ECM(PR VOLTAGE)
(a) Start the engine.
(b) Measure the voltage between the specified terminals of
the E13 ECM connector.
Standard:
Tester ConnectionSpecified Condition
PR (E13−23)−E2 (E13−28)2.1 to 3.2 V at 25_C (77_F)
HINT:
The fuel pressure in the delivery pipe is 8 to 13 MPa (81.6 to
132.6 kgf/cm
2, 1,160 to 1,885 psi)
NG Go to step 5
OK
REPLACE ECM (See page10−65 of Pub. No. RM1018E AVENSIS)
4 CHECK HARNESS AND CONNECTOR(ECM−FUEL PRESSURE SENSOR)
(a) Disconnect the E13 ECM connector.
(b) Disconnect the F16 fuel pressure sensor connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
VC (E13−18)−VCC (F16−1)Below 1

PR (E13−23)−VOUT (F16−2)Below 1

E2 (E13−28)−GND (F16−3)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
VC (E13−18) or VCC (F16−1)−Body ground10 k
or higher
PR (E13−23) or VOUT (F16−2)−Body ground10 k
or higher
(d) Reconnect the ECM connector.
(e) Reconnect the fuel pressure sensor connector.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ECM (See page10−65 of Pub. No. RM1018E AVENSIS)

A81699PRE13
ECM Connector
A59674
F16
Fuel Pressure Sensor Connector Wire Harness Side:
VOUT
Front View
05−130
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
5 CHECK HARNESS AND CONNECTOR(ECM−FUEL PRESSURE SENSOR)
(a) Disconnect the E13 ECM connector.
(b) Disconnect the F16 fuel pressure sensor connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for short):
Tester ConnectionSpecified Condition
PR (E13−23) or VOUT (F16−2)−Body ground10 k
or higher
(d) Reconnect the ECM connector.
(e) Reconnect the fuel pressure sensor connector.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE FUEL PRESSURE SENSOR

+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Case1
Case 2
Case 3
Case 4
Output voltage of heated oxygen
sensor (sensor1: front sensor)
Injection volume
Output voltage
Output voltage of heated oxygen
sensor (sensor 2: rear sensor)Main suspect
trouble area
OK
+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
Sensor1: front sensor
(sensor1, heater, sensor1
circuit)+25 %
−12.5 %
More than 0.5 V
Less than 0.4V
Injection volume
Output voltage
+25 %
−12.5 %
Injection volume
Output voltage
NG
+25 %
−12.5 %
Injection volume
Output voltage
NG
+25 %
−12.5 %
Injection volume
Output voltage
NG
+25 %
−12.5 %
Injection volume
Output voltage
NGExtremely rich or lean actual
air−fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
Almost no reaction


Sensor 2: rear sensor
(sensor 2, heater, sensor 2
circuit)
Almost no reaction Almost no reactionAlmost no reaction
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−111
AVENSIS Supplement (RM1045E)
NOTICE:
There is a delay of few seconds in the sensor1(front sensor) output, and there is about 20 seconds
delay at maximum in the sensor 2 (rear sensor).
The following A/F CONTROL procedure enables the technician to check and graph the voltage outputs of
both the heated oxygen sensor.
To display the graph, enter ACTIVE TEST/ A/F CONTROL/USER DATA, then select ”O2S B1S1and O2S
B1S2” or ”O2S B2S1and O2S B2S2” by pressing the ”YES” button followed by the ”ENTER” button and then
the ”F4” button.
NOTICE:
If the vehicle is short of fuel, the air−fuel ratio becomes LEAN and heated oxygen sensor DTCs will
be recorded, and the CHK ENG then illuminates.
HINT:
SIf different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
SRead freeze frame data usingthe hand−held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, 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.
SA high heated oxygen sensor (sensor1) voltage (0.5 V or more) could be caused by a rich air−fuel
mixture. Check for conditions that would cause the engine to run rich.