2005 TOYOTA AVENSIS fuel pressure

05CDV−02
A83877
Ignition Coil Assy
Camshaft Position Sensor
VSV for EVAP
Combination Meter
DLC3
VSV for Intake Air Control Valve
Fuel Pump
ECM
Knock Sensor Camshaft Timing Oil Control Valve
(OCV)
Injector
Crankshaft Position
Sensor
Park/Neutral Position Switch
(Only for A/T Models)Engine Coolant
Temperature Sensor
Mass Air Flow Meter
Throttle Body Assy
Accelerator Pedal Assy
Heated Oxygen Sensor
(Bank 2 Sensor 2) *
2
Circuit Opening Relay
Heated Oxygen Sensor
(Bank1Sensor 2 ) *
1
Heated Oxygen Sensor
(Bank 2 Sensor1)*
2
Heated Oxygen Sensor
(Bank1Sensor1)*
1
Manifold Absolute Pressure Sensor
Fuel Pump (For High Pressure)
Injector Driver (EDU)
Brake Booster
Pressure Sensor
Fuel Pressure Sensor
(For Low Pressure)
FEFI Fuse
FIG2 Fuse
FAM2 Fuse
FTHROTTLE Fuse
FEFI Relay
FIG2 Relay
FINJ Relay
FEFI No.1Fuse
FEFI No.2 Fuse
FACT Fuse
FST Fuse
FIGN Fuse
FSTOP Fuse
FST Relay
Fuel Pump RelayFuel Pump Resister
*1: Bank1refers to the No.1and No.4 cylinders
*2: Bank 2 refers to the No.2 and No.3 cylinders
Engine Room R/B No.4:
Engine Room J/B No.4:Fuse Block:
Engine Room R/B No.1:
Engine Room J/B No.1:
Driver Side R/B:
Driver Side J/B: 05−2
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
LOCATION

054JE−09
A85347
Mass Air Flow Meter
DLC3
Accelerator Pedal Assy
(Accelerator Pedal
Position Sensor)
EDUECM
Engine Room R/B No. 1:
FEDU Relay
FEDU Fuse
Glow Plug Relay
Camshaft Position SensorInjector
Crankshaft Position Sensor
Engine Coolant Temperature Sensor Fuel Pressure Sensor
Fuse Block
FST Fuse
Driver Side J/B
FGAUGE Fuse
FSTOP Fuse
Driver Side R/B
FST Relay
E−VRV Pressure Discharge Valve Glow Plug
Exhaust Gas Temperature
Sensor (on down stream)Intake Air Temperature Sensor
EGR Valve
Turbo Pressure Sensor
Intake Shutter (Throttle Valve)
Suction Control Valve
Fuel Temperature Sensor
Supply Pump Exhaust Gas Temperature
Sensor (on up stream)
Exhaust Fuel Addition Injector
A/F Sensor
Engine Room R/B No. 3:
FGLOW Fuse
EGR Valve
Position Sensor
Intake Shutter
(Throttle Valve)
Position Sensor
Differential Pressure Sensor 05−254
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
LOCATION

1
2
3
4
A93906
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −24 1
AVENSIS Supplement (RM1045E)
FUEL PUMP CONTROL CIRCUIT
CIRCUIT DESCRIPTION
Refer to DTC P0230 on page 05 −141.
WIRING DIAGRAM
Refer to DTC P0230 on page 05 −141.
INSPECTION PROCEDURE
1 CHECK FUEL PUMP OPERATION (See page 11− 4)
(a) Check if there is pressure in the fuel inlet hose.
HINT:
If there is fuel pressure, you will hear the sound of fuel flowing.
OK Go to step 9
NG
2 PERFORM ACTIVE TEST BY HAND −HELD TESTER(OPERATION OF CIRCUIT
OPENING RELAY)
(a) Connect the hand −held tester to the DLC3.
(b) Start the engine and warm it up.
(c) Turn the ignition switch to ON.
(d) Select the item: DIAGNOSIS / OBD/MOBD / ACTIVE TEST / FUEL PUMP/SPD.
(e) Check the relay operation when it is operated by the hand −held tester.
Standard: Operating sound can be heard from the relay.
OK Go to step 4
NG
3 INSPECT RADIATOR FAN RELAY
(a) Remove the R21 radiator fan relay.
(b) Check for continuity in the radiator fan relay relay. Standard:
Tester ConnectionSpecified Condition
1−2Continuity
3−4Continuity
1−2No Continuity
(Apply battery voltage to terminals 3 and 4)
(c) Reinstall the radiator fan relay relay.
NG REPLACE FUEL PUMP RELAY
OK
05HIS −01

A76876
ECM
J13G
FP+ 6
R
E12
D(Shielded)
J13 E
J12 E J12D
BRBR
EEJ/C21 S3
Fuel Pump
(High Pressure)
(Spill Valve)
G
FP− 3
E12
(Shielded) BR
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−207
AVENSIS Supplement (RM1045E)
DTC P1235 HIGH PRESSURE FUEL PUMP CIRCUIT
CIRCUIT DESCRIPTION
The fuel pump (high pressure) is an electronically controlled plunger type fuel pump which is driven by the
cam provided on the intake camshaft rear end on the cylinder head.
The fuel pump (high pressure) increases the pressure of the fuel supplied from the fuel pump (low pressure)
in the fuel tank to 8 to 13 MPa (81.6 to 132.6 kgf/cm
2, 1,160 to 1,885 psi) according to the operating condition,
and it feeds the fuel to the fuel delivery pipe.
DTC No.DTC Detection ConditionTrouble Area
Ohtifl(hi h)iitf1dSOpenorshortinfuelpump(highpressure)
P1235Open or short in fuel pump (high pressure) circuit for 1 second
ormore
SOpenorshortinfuelpump(highpressure)
SFuelpump(highpressure)P1235or moreSFuelpump(highpressure)
SECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read 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.
05CK4−02

A13269B12608
A76903
E12
ECM Connector
FP+
FP− E1
E11
A93658
Normal Signal Waveforms
5 msec./Division 10 V/
Division
GND FP
−
FP+
05 −208
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
1 CHECK OPERATION OF FUEL PUMP(HIGH PRESSURE)
(a) With the engine running or cranking, use a sound scope
to check that there is the normal operating sounds of the
fuel pump (high −pressure) when it is operated.
Standard:
There is the operating sounds of the fuel pump (high −
pressure).
NG REPLACE FUEL PUMP (HIGH PRESSURE)
OK
2 INSPECT ECM(FP+ AND FP − VOLTAGE)
(a) Start the engine, and check the waveforms between ter-
minals FP+ and E1, and FP − and E1 of the E11 and E12
ECM connectors.
HINT:
The correct waveform is as shown in the illustration.
NG REPLACE ECM (See page 10 − 65 of Pub. No.
RM 1018E AVENSIS)
OK
3 CHECK FUEL PUMP(HIGH PRESSURE) (See page 11− 7)
NG REPLACE FUEL PUMP(HIGH PRESSURE)
OK

A81695
E12
ECM Connector
FP+
FP
−
A81702
S3
Fuel Pump Connector (High Pressure)
Wire Harness Side:
Front View
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −209
AVENSIS Supplement (RM1045E)
4 CHECK HARNESS AND CONNECTOR(FUEL PUMP (HIGH PRESSURE) − ECM)
(a) Disconnect the E12 ECM connector.
(b) Disconnect the S3 fuel pump (high pressure) connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
FP+ (E12 −6) − Fuel pump (S3 −1)Below 1

FP− (E12 −3) − Fuel pump (S3 −2)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
FP+ (E12 −6) or Fuel pump (S3 −1) − Body ground10 k
or higher
FP − (E12 −3) or Fuel pump (S3 −2) − Body ground10 k
or higher
(d) Reconnect the ECM connector.
(e) REconnect the fuel pump (high pressure) connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR INTERMITTENT PROBLEMS (See Page 05 −7)

A76903
E2 (−)
VC (+)
ECM Connector
E13
A76903
PB (+)
E2 (
−)
ECM Connector
E13
05−1 92
−
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 CHECK VACUUM HOSES(BRAKE BOOSTER PRESSURE SENSOR − BRAKE
BOOSTER, INTAKE MANIFOLD − BRAKE BOOSTER)
(a) Check that the vacuum hoses are connected correctly.
(b) Check that the vacuum hoses are not loose or disconnected.
(c) Check the vacuum hoses and tubes for clogs, cracks, holes, damage, or blockage.
NG REPAIR OR REPLACE VACUUM HOSES
OK
2 INSPECT ECM(VC VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the specified terminals of the E13 ECM connector.
Standard:
Tester ConnectionSpecified Condition
VC (E13 −18) − E2 (E13 −28)4.5 to 5.5 V
NG REPLACE ECM (See page 10 − 65 of Pub. No.
RM 1018E AVENSIS)
OK
3 INSPECT ECM(PB VOLTAGE)
(a) Measure the voltage between the specified terminals of the E13 ECM connector.
Standard:
Tester ConnectionConditionSpecified Condition
PB (E13 −26) −
E2 (E13 −28)Ignition switch ON
(do not start engine)0.5 to 4.5 V
PB (E13 −26) −
E2 (E13 −28)Idling0.5 to 4.5 V
NG Go to step 4
OK
CHECK FOR INTERMITTENT PROBLEMS (See Page 05 −7)

A88100
Normal Signal Waveform
5V/
Division
#
1
#2
#3
#4
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 47
AVENSIS Supplement (RM 1045E)
DTC No.
DTC Detection ConditionTrouble Area
P0300Misfiring of random cylinders is detected
S
Open or short in engine wire harness
S Connector connection
S Vacuum hose connection
S Ignition system
S Injector
S Fuel pressure
S Mass air flow meter
S Engine coolant temperature sensor
S Compression pressure
S Valve clearance
S Valve timing
S PCV hose connection
S PCV hose
S ECM
P030 1
P0302
Misfiring of each cylinder is detected
S Open or short in engine wire harness
S Connector connection
S Vacuum hose connection
S Ignition system
S Injector
S Fuel pressure
S Mass air flow meter
P0302
P0303
P0304Misfiring of each cylinder is detectedMass air flow meter
S Engine coolant temperature sensor
S Compression pressure
S Valve clearance
S Valve timing
S PCV hose connection
S PCV hose
S ECM
HINT:
When several codes for a misfiring cylinder are recorded repeatedly but no random misfire code is recorded,
it indicates that the misfires have been detected and recorded at different times.
Reference: Inspection using oscilloscope
With the engine idling, check the waveform between terminals # 1 to #4 and E0 1 of the ECM connectors.
HINT:
The correct waveform is as shown.
WIRING DIAGRAM
Refer to DTC P0200 on page 05 −1 36 for the wiring diagram of the injector system.
Refer to DTC P035 1 on page 05 −1 67 for the wiring diagram of the ignition system.