2005 TOYOTA AVENSIS diagram

A72925
ECM
THW
E2 19
E13
28
E13 BR B±W
1 2 E2
Engine Coolant Temperature Sensor
5V
R
E1
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±351
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0115 ENGINE COOLANT TEMPERATURE CIRCUIT
DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT
LOW INPUT
DTC P0118 ENGINE COOLANT TEMPERATURE CIRCUIT
HIGH INPUT
CIRCUIT DESCRIPTION
A thermistor is built in the engine coolant temperature sensor and changes the resistance value according
to the engine coolant temperature.
The structure of the sensor and connection to the ECM is the same as those of the intake air temperature
sensor.
If the ECM detects the DTC ºP0115, P0117 or P0118º, it operates the fail±safe functions in which the engine
coolant temperature is assumed to be 80C (176F).
DTC No.Proceed toDTC Detection ConditionTrouble Area
P0115Step 1
Open or short in engine cool-
ant temp. sensor circuit for
0.5 sec.
Open or short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM
P0117Step 4Short in engine coolant temp.
sensor circuit for 0.5 sec.
Short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM
P0118Step 2Open in engine coolant temp.
sensor circuit for 0.5 sec.
Open in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM
HINT:
After confirming DTC ºP0115, P0117 or P0118º, use the hand±held tester to confirm the engine coolant tem-
perature from the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALLº.
Temperature DisplayedMalfunction
±40 C (±40 F)Open circuit
140  (284   Short circuit
WIRING DIAGRAM
05CJH±01

A72925
BR GR
28 20
E13THA
E2ECM
54 A6
Intake Air Temperature Sensor
(Built in Mass Air Flow Meter)
E135V
R
THA
E2
E1
05±348
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
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 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 READ VALUE OF HAND±HELD TESTER(INTAKE AIR TEMPERATURE)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Push the hand±held tester main switch ON.
(d) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / INTAKE AIRº and read its value dis-
played on the hand±held tester.
Temperature: Same value as the actual intake air temperature
Result:
DisplayProceed to
±40C (±40
)A
140C (284
) or moreB
OK (Same as present temperature)C
HINT:

If there is an open circuit, the hand±held tester indicates ±40C (±40F).

If there is a short circuit, the hand±held tester indicates 140C (284F) or more.
B Go to step 4
C CHECK FOR INTERMITTENT PROBLEMS
A

A00309
V1
Manifold Absolute Pressure Sensor
18
E13ECM
5V
E1 1R±W
33
G±W
2 3
BR28
E2 PIM VC
VOUT
GNDE13
E13 VCC
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±343
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
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 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 READ VALUE OF HAND±HELD TESTER(INTAKE MANIFOLD ABSOLUTE
PRESSURE)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Push the hand±held tester main switch ON.
(d) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / MAPº and read its value displayed on
the hand±held tester.
Pressure: Same as the atmospheric pressure
Result:
Manifold Absolute Pressure (kPa)Proceed to
142 or moreA
0.0B
OK (Same as present pressure) (*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
A

A76863
B±Y
Battery FL MAINEngine Room R/B No. 4
L±Y EFI Relay
A6
Mass Air Flow MeterMREL
B±G 4B 1
W±BB±W 53
2
1
29
E138
E9ECM
EFI No. 2
EC 4A 1
Engine Room
J/B No. 4 1A 1
B±G 1 2
EFI 1
Engine Room
R/B No. 1 and
Engine Room
J/B No. 14
4
44
4
4
2
1 W±B
B±W
B±WGR
GRIE1 2
EVG 30
E13VG
G 1
3
2 EA113
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±337
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 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 mal-
function.
1 READ VALUE OF HAND±HELD TESTER(MASS AIR FLOW RATE)
(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 / MAFº and read its value displayed on
the hand±held tester.
Result:
Air flow rate (gm/s)Proceed to
0.0A
271.0 or moreB
1
Mass Air Flow Rate
270.0 (*1)C
*1: The value must be changed when the throttle valve is opened or closed.

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