TOYOTA AVENSIS 2005 Service Repair Manual

A76903
E01
IJF 1
E13
ECM Connector
A8 1709
Normal Signal Waveform
IJF 1 2V/
Division
05
−1 40
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
NG REPLACE ECM (See page 10 − 65 of Pub. No.
RM 1018E AVENSIS)
OK
5 CHECK ECM(IJF 1 VOLTAGE)
(a) Connect an oscilloscope to terminals IJF 1 and E0 1 of the
E 13 ECM harness side connector.
(b) With the engine cranking or idling, check the signal wave- form.
Standard:
Signal waveform appears as shown in the illustration.
HINT:
Check the waveform before the ECM detects the DTC(s) and
enters the fail −safe mode, because the EDU will no more indi-
cat e t he v olt age out put once t he ECM ent er s t he f ail −safe
mode.
NG REPLACE INJECTOR DRIVER
OK
CHECK FOR INTERMITTENT PROBLEMS (See Page 05 −7)
6 INSPECT FUEL INJECTOR ASSY (See page 11− 7)
NG REPLACE FUEL INJECTOR ASSY
(See Page 11−1 3)
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR

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

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 09
AVENSIS Supplement (RM 1045E)
DTC P0 136 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 1 SENSOR 2)
DTC P0 156 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 2 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0 130 on page 05 −82.
DTC NoDTC Detection ConditionTrouble Area
P0 136
P0 156
If the following two conditions are satisfied at a time
(2 trip detection logic):
(a) The ECM records cycles which the vehicle runs and stops
8 times or more
(b) There was no change in the rich and lean output from
heated oxygen sensor (sensor 2) for the 360 seconds un-
der air −fuel ratio feedback control (Throttle was not closed)
S Open or short in heated oxygen sensor circuit
S Heated oxygen sensor (Bank 1, 2 Sensor 2)
S Heated oxygen sensor heater (Bank 1, 2 Sensor 2)
S EFI relay
HINT:
S Bank 1 refers to the No. 1 and No. 4 cylinders.
S Bank 2 refers to the No. 2 and No. 3 cylinders.
S Sensor 2 refers to the sensor farthest away from the engine assembly.
WIRING DIAGRAM
Refer to DTC P0 130 on page 05 −82.
05CKC −02

A58686A58686
Vehicle speed40 km/h
(25 mph)
Ignition OFF Once
40 seconds
or more
60 seconds
or more 1
0 seconds Twice
40 seconds
or more
(f)
1
2 times
40 seconds
or more
1 0 seconds 10 seconds
(a), (b) (d)
(e)
Idling (c) (d)
(e) (d)
(e)
05
−11 0
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
CONFIRMATION DRIVING PATTERN
(a) Connect the hand −held tester to the DLC3.
(b) Switch the hand −held tester from normal mode to check mode (see page 05 −20).
(c) Start the engine and let it idle for 60 seconds or more.
(d) Drive the vehicle at 40 km/h (25 mph) or more for 40 seconds or more.
(e) Let the engine idle for 10 seconds or more.
(f) Perform steps (d) and (e) 12 times.
HINT:
If a malfunction exists, the CHK ENG will be illuminated during step (f).
NOTICE:
If the conditions in this test are not strictly followed, no malfunction will be detected. If you do not
have the hand −held tester, turn the ignition switch to OFF after performing steps from (c) to (f), then
perform steps (c) to (f) again.
INSPECTION PROCEDURE
HINT:
Hand −held tester only:
It is possible the malfunctioning area can be found using the ACTIVE TEST A/F CONTROL operation. The
A/F CONTROL operation can determine if the A/F sensor, heated oxygen sensor or other potential trouble
areas are malfunctioning or not.
(a) Perform the ACTIVE TEST A/F CONTROL operation.
HINT:
The A/F CONTROL operation lowers the injection volume 12.5% or increases the injection volume 25%.
( 1 ) Connect the hand −held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch to ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 3 minutes.
(4) Select the item: DIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROL.
(5) Perform the A/F CONTROL operation with the engine in an idle condition (press the right or left button).
Result:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume:
+25 %
rich output: More than 0.5 V
−1 2.5 %
lean output: Less than 0.4 V

+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.

A62378
+B HT
E 1
1
2
3
4
OX
Heated Oxygen Sensor
Component Side:
Front View
B2S2
H
10
B 1S2
H8
05
−11 2
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
S A low heated oxygen sensor (sensor 1) voltage (0.4 V or less) could be caused by a lean air −fuel mix-
ture. Check for conditions that would cause the engine to run lean.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0 136 AND/OR P0 156)
(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
P0 136 and/or P0 156A
P0 136 or P0 156 and other DTCsB
HINT:
If any other codes besides P0 136 and/or P0 156 are output, perform troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART (See page 05 −31)
A
2 READ VALUE OF HAND −HELD TESTER(OUTPUT VOLTAGE OF HEATED OXYGEN
SENSOR)
(a) Connect the hand −held tester to the DLC3.
(b) Start the engine and turn the hand −held tester ON.
(c) Select the item: DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES.
(d) After warming up the engine, run the engine at 2,500 rpm for 3 minutes.
(e) Read the output voltage of the heated oxygen sensor when the engine speed is suddenly increased.
HINT:
Quickly accelerate the engine to 4,000 rpm 3 times by using the accelerator pedal. The output voltage of heated oxygen sensor (sensor 2): Alternates from 0.4 V or less to 0.5 V
or more.
OK Go to step 6
NG
3 INSPECT HEATED OXYGEN SENSOR(HEATER RESISTANCE)
(a) Disconnect the H8 or H 10 heated oxygen sensor connec-
tor.
(b) Measure the resistance between the terminals of the heated oxygen sensor connector.
Standard (Bank 1, 2 Sensor 2):
Tester ConnectionResistance
1 (HT) −2 (+B)11 to16
at 20 _C (68 _F)
1 (HT) −4(E 1)10k
or higher
(c) Reconnect the heated oxygen sensor connector.
NG REPLACE HEATED OXYGEN SENSOR
OK

B16200
A72895
Wire Harness Side:
B1S2
B2S2 H8
H10
Heated Oxygen Sensor ConnectorOX
HT
E1
Front View
A76824OX2BECM Connector E12
OX1B
HT2BHT1B
O1B−
O2B− E11
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−113
AVENSIS Supplement (RM1045E)
4 INSPECT EFI RELAY
(a) Remove the EFI relay from the engine room R/B No. 4.
(b) Check for continuity in the EFI relay.
Standard:
Tester ConnectionSpecified Condition
1−2Continuity
3−5No Continuity
3−5Continuity
(Apply battery voltage to terminals1and 2)
(c) Reinstall the EFI relay.
NG REPLACE EFI RELAY
OK
5 CHECK HARNESS AND CONNECTOR(HEATED OXYGEN SENSOR−ECM)
(a) Disconnect the H8 or H10 heated oxygen sensor connec-
tor.
(b) Disconnect the E11and E12 ECM connectors.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
OX (H8−3)−OX1B(E12−21)Below1

HT (H8−1)−HT1B(E12−25)Below1

E1(H8−4)−O1B−(E11 −26)Below1

OX (H10−3)−OX2B (E12−29)Below1

HT (H10−1)−HT2B (E12−33)Below1

E1(H10−4)−O2B−(E11 −31)Below1

Standard (Check for short):
Tester ConnectionSpecified Condition
OX (H8−3) or OX1B(E12−21)−Body ground10k
or higher
HT (H8−1)orHT1B(E12−25)−Body ground10k
or higher
OX (H10−3) or OX2B (E12−29)−Body ground10k
or higher
HT (H10−1) or HT2B (E12−33)−Body ground10k
or higher
(d) Reconnect the heated oxygen sensor connector.
(e) Reconnect the ECM connector.
HINT:
SThe OX1B and HT1B means the heated oxygen sensor
bank1sensor 2.
SThe OX2B and HT2B means the heated oxygen sensor
bank 2 sensor 2.