diagram TOYOTA AVENSIS 2005 Service Manual PDF

A72920
Reference (Bank 1 Sensor 1 System Drawing)Heated Oxygen Sensor
EFI Relay
Heater
SensorOX1A HT1A
Duty
Control
ECM
From
Battery EFI Fuse
E2
EFI No. 2
Fuse
MREL
OX HT
E1
+B
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±331
AVENSIS REPAIR MANUAL (RM1018E)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05±363.
HINT:
The ECM provides a pulse width modulated control circuit to adjust current \
through the heater. The heated
oxygen sensor heater circuit uses a relay on the B+ side of the circuit.
DTC No.DTC Detection ConditionTrouble Area
P0031
P0037Heated current is 0.2 A or less when heater operates with +B >
10.5 V and < 11.5 V (1 trip detection logic)
Open in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

EFI relay
P0037
P0051
P0057Heated current is 0.25 A or less when heater operates with +B

11.5 V (1 trip detection logic)
EFI relay

EFI fuse

EFI No. 2 fuse

ECM
P0032
P0038
P0052
P0058
Heated current exceeds 2 A when heater operates.
(1 trip detection logic)
Short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM
HINT:

Bank 1 refers to the No. 1 and No. 4 cylinders.

Bank 2 refers to the No. 2 and No. 3 cylinders.

Sensor 1 refers to the sensor closest to the engine assembly.

Sensor 2 refers to the sensor farthest away from the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05±363.
INSPECTION PROCEDURE
HINT:

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 deter\
mining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±329
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0016CRANKSHAFT POSITION ±CAMSHAFT
POSITION CORRELATION (BANK 1 SENSOR
A)
CIRCUIT DESCRIPTION
Refer to DTC P0335 on page 05±433.
DTC No.DTC Detection ConditionTrouble Area
P0016Deviation in crankshaft position sensor signal and camshaft
position sensor (bank 1) signal (2 trip detection logic)
Mechanical system
(Timing chain has jumped a tooth, chain stretched)

ECM
WIRING DIAGRAM
Refer to DTC P0335 on page 05±433.
INSPECTION PROCEDURE
HINT:
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 determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK VALVE TIMING (See page 14±186)
(a) Check for loose and jumping teeth of timing chain.
NGADJUST VALVE TIMING (See page 14±186) (REPAIR OR REPLACE TIMING CHAIN)
OK
CHECK AND REPLACE ECM (See page 01±32)
05CE0±01

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±325
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0011CAMSHAFT POSITION ºAº ±TIMING OVER±
ADVANCED OR SYSTEM PERFORMANCE
(BANK 1)
DTCP0012CAMSHAFT POSITION ºAº ±TIMING OVER± RETARDED (BANK 1)
CIRCUIT DESCRIPTION
Refer to DTC P0010 on page 05±322.
DTC No.DTC Detection ConditionTrouble Area
P0011
Condition (a) or (b) continues after engine is warmed up and
engine speed at 400 to 4,000 rpm (Problem of the advanced
OCV.):
(a)Valve timing does not change from current valve timing
(b)Current valve timing is fixed

Valve timing

OCV
P0012
Condition (a) or (b) continues after engine is warmed up and
engine speed at 400 to 4,000 rpm (Problem of the retarded
OCV.):
(a)Valve timing does not change from current valve timing
(b)Current valve timing is fixed
OCV

Camshaft timing gear assy

ECM
WIRING DIAGRAM
Refer to DTC P0010 on page 05±322.
INSPECTION PROCEDURE
HINT:
Advanced timing over
(Valve timing is out of specified range)P0011
Retarded timing over
(Valve timing is out of specified range)P0012

If DTC ºP0011 or P0012º is displayed, check VVT system circuit.

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 deter\
mining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.
1CHECK VALVE TIMING (See page 14±186)
NGADJUST VALVE TIMING (See page 14±186)
OK
05CDZ±01

A59779
C2
Camshaft Timing Oil
Control Valve1
2 ECM
W±G OC1+
15
Y±B OC1±
E11
16
E11
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±323
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
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 determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1PERFORM ACTIVE TEST BY HAND±HELD TESTER(OPERATE OCV)
(a)Connect the hand±held tester to the DLC3.
(b)Start the engine and warm it up.
(c)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / VVT CTRL B1º\
.
(e)Check the engine speed when operating the OCV by the hand±held tester.
Standard:
Tester operationSpecified condition
OCV is OFFNormal engine speed
OCV is ONRough idle or engine stall
OKCHECK FOR INTERMITTENT PROBLEMS
NG
2INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY(OCV) (See page 10±39)
NG REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY
OK

A76874
C1
Camshaft Position Sensor
C6
Crankshaft Position SensorR W
2 1
EE BR
G J12
J/CE1127ECM
G2+
NE+
NE± (Shielded)
R
BRE11
E1125
24
2 1
(Shielded)E E
E
R R
Crankshaft
Position
Sensor
Plate No. 1Camshaft
Timing
Pulley LH
A64984Crankshaft Position Sensor Component Side
C6
05±434
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

Perform troubleshooting of DTC P0335 first. If no trouble is found, troubleshoot the engine mechanical
system.

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, the air±fuel ratio was lean or rich, etc. at
the time of the malfunction.
1 INSPECT CRANKSHAFT POSITION SENSOR(RESISTANCE)
(a) Disconnect the C6 crankshaft position sensor connector.
(b) Measure the resistance between the terminals of the
crankshaft position sensor.
Resistance:
985 to 1,600 at cold
1,265 to 1,890 at hot
NOTICE:
ºColdº and ºHotº shown above mean the temperature of
the coils themselves. ºColdº is from ±10C (14F) to 50C
(122F) and ºHotº is from 50C (122F) to 100C (212F).
NG REPLACE CRANKSHAFT POSITION SENSOR
OK

A83343
KNK Signal Waveform
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±429
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0325 KNOCK SENSOR 1 CIRCUIT (BANK 1 OR
SINGLE SENSOR)
DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW INPUT
(BANK 1 OR SINGLE SENSOR)
DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH INPUT
(BANK 1 OR SINGLE SENSOR)
CIRCUIT DESCRIPTION
A flat type knock sensor (non±resonant type) has a structure that can detect vibrations in a wide frequency
range, from about 6 kHz to 15 kHz, and has the following features.
Knock sensor is fitted on the cylinder block to detect the engine knocking.
The knock sensor contains a piezoelectric element which generates a voltage when it becomes deformed.
This occurs when the cylinder block vibrates due to knocking. If engine knocking occurs, the ignition timing
is retarded to suppress it.
DTC No.DTC Detection ConditionTrouble Area
P0325Output voltage of the knock sensor decreases beyond a
threshold. (Threshold varies according to an engine speed.)
Knock sensor

Knock sensor (under±torqued or loose)

ECM
P0327Output voltage of the knock sensor is 0.5 V or less.

Short in knock sensor circuit

Knock sensor

ECM
P0328Output voltage of the knock sensor is 4.5 V or more.

Open in knock sensor circuit

Knock sensor

ECM
HINT:
If the ECM detects above diagnosis conditions, it operates the fail safe function in which the corrective retard
angle value is set to the maximum value.
Reference:
The correct waveform is shown in the diagram on the left.
ItemDetails
TerminalKNK1 ± EKNK
Equipment Settings0.01 to 10 V/ Division,
0.01 to 10 msec./ Division
ConditionAfter warming up the engine,
keep the engine speed at 4,000 rpm.
05CKI±01

A76872
K1
Knock SensorECM
KNK1
E12
(Shielded)
1 BR D
E
J13 J12 1
B B
J/C EKNK
E12 2
W
2
EEJ12
J13
D
E
BR BR 5 V
05±430
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
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 determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1READ OUTPUT DTC
(a)Clear the DTC (See page 05±294).
(b) Warm up the engine.
(c) Run the engine at 3,000 rpm for 10 seconds or more.
(d)Read the DTC (See page 05±294). Result :
Display (DTC output)Proceed to
Only ºP0325º is output againA
ºP0325, P0327 and/or P0328º are output againB
ºP0325, P0327 and/or P0328º are not output againC
B Go to step 3
C CHECK FOR INTERMITTENT PROBLEMS
A

A76865
ECM
+B 1
E9
W±B 4
2
1
2
12
4A
W±B
Battery
EC 1 3
5
FL MAINB±R
EE (Shielded) 4EFI
No. 1Engine
Room
R/B No. 4
B±W
B±R
Engine Room
R/B No. 4 EFI
Relay
B±Y 44
44
1
4B 1Engine Room
J/B No. 4 B±G
B±GEFI 1
1A 1Engine
Room
R/B No. 1
and
Engine
Room
J/B No. 1GRB±R B±R
B±YB±YB±YGRGR B±R
+B2 2
E9 D
J14
(LHD)(RHD)D
J28D
J14
(LHD)(RHD)D
J28
D
J14D
J28 J/C
B±R 2
IE4
(LHD) (RHD)3
IP1
7
IE3
(LHD) (RHD)7
IO12
IE1
B±YMREL 8
E9
BATT 3
E9
4 IE2V
IREL 35
E10 V
21 5
3INJ
Relay 44
44
R±B
IJF1 25
E13
G±W
#1 1
E13 5
E5
4
E5 IJF
IJT#1
W±R
#2 2
E13 1
E5 IJT#2
R±W
#3 3
E13 2
E5 IJT#3
W±L
#4 4
E13 3
E5 IJT#4
Electronic
Driver Unit
EA1 7Y4
E4 INJ#1
1
2 I 5
Injector No. 1
BR
B±R 3
E4 INJ#4
1
2 I 8
Injector No. 4
BR
BR 5
E4
COM1
P 1
E4 INJ#2
1
2 I 6
Injector No. 2
L
B±W 2
E4 INJ#3
1
2 I 7
Injector No. 3
L
L 6
E4 COM2 B
B (Shielded)
8
E4VB
W7
E4 GND
W±B
EF BR BR 05±416
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

A81710
Camshaft
Fuel Relief ValveECM
Fuel Pressure Sensor
Pulsation Damper
Fuel Tank
Fuel Pressure
Regulator Fuel Injector
Spill Valve
High±Pressure Fuel Pump
Low±Pressure
Fuel PumpFuel Delivery Pipe Reference (Fuel system diagram)
Pump
Plunger
High±Pressure Fuel Line Low±Pressure
Fuel Line
Check Valve
05±410
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0191 FUEL RAIL PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
The high±pressure fuel system consists of the spill valve, pump plunger, check valve, fuel relief valve and
fuel pressure sensor. The spill valve opens and closes the low±pressure fuel line (from the fuel tank), the
pump plunger operated by the camshaft pressurizes fuel, the check valve mechanically opens and closes
the high±pressure fuel line (to the fuel delivery pipe), the fuel relief valve prevents fuel pressure from becom-
ing extremely high, and the fuel pressure sensor located on the fuel delivery pipe monitors fuel pressure.
The high±pressure fuel pump is mounted on the cylinder head cover, and its plunger is operated by the cam
located between #3 and #4 on the intake camshaft. Let the plunger moves up and down by the camshaft
rotations, it produces vacuum to suck fuel and pressurizes the fuel. This fuel then pushes the check valve
open and flows into the fuel delivery pipe. The ECM opens and closes the spill valve to regulate the fuel
pressure to the target fuel pressure 8 to 13 MPa (81.6 to 132.6 kgf/cm
2, 1,160 to 1,885 psi). In order to obtain
and maintain the target pressure, the ECM monitors the fuel pressure using the fuel pressure sensor and
performs the feedback control.
If the internal fuel pressure of the fuel delivery pipe exceeds beyond the standard pressure 14 MPa (142.8
kgf/cm
2, 2,030 psi), the fuel relief valve installed on gateway of the fuel delivery pipe discharges the fuel pres-
sure and then returns the fuel back to the fuel tank.
DTC No.DTC Detection ConditionTrouble Area
P0191
After the fuel pressure is stable for 3 seconds or more, the
following condition (a) or (b) continues for more than 10 se-
conds:
(a) ECM did not command the high±pressure fuel pump to
open the spill valve, but fuel pressure increases 3 MPa
(30.6 kgf/cm
2, 435 psi).
(b) Despite ECM commanded the high±pressure fuel pump to
open the spill valve, fuel pressure decreases 5 MPa (51.0
kgf/cm
2, 725 psi).

Open or short in high±pressure fuel pump (spill valve) circuit

High±pressure fuel pump

Low±pressure fuel pump

Fuel pipe

Fuel relief valve

Fuel pressure regulator

ECM
05CKF±01

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±411
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
Refer to DTC P1235 on page 05±477.
INSPECTION PROCEDURE
HINT:

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 deter\
mining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0191)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
Only ºP0191º is outputA
ºP0191º and other DTCs are outputB
HINT:
If any other codes besides ºP0191º are output, perform the troublesh\
ooting for those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±309)
A
2READ VALUE OF HAND±HELD TESTER(FUEL PRESSURE)
(a)Connect the hand±held tester to the DLC3.
(b)Start the engine.
(c)Push the hand±held tester main switch ON.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / FUEL PRESSº and read its value dis- played on the hand±held tester.
Pressure: 8 to 13 MPa (81.6 to 132.6 kgf/cm
2, 1,160 to 1,885 psi)
NGGo to step 10
OK
3CHECK FUEL PRESSURE(LOW PRESSURE) (See page 11±33)
NG Go to step 12
OK
4 CHECK FOR FUEL LEAKS(HIGH PRESSURE)
(a) Check if there is leakage in the fuel pipe located between the high±pressure fuel pump and the injec- tors.