2005 TOYOTA AVENSIS diagram

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±381
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0134OXYGEN SENSOR CIRCUIT NO ACTIVITY
DETECTED (BANK 1 SENSOR 1)
DTCP0154OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 2 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05±363.
DTC No.DTC Detection ConditionTrouble Area
P0134
P0154
After engine is warmed up, heated oxygen sensor (sensor 1)
output does not indicate RICH (
0.45 V) even once when
conditions (a), (b), (c) and (d) continue for at least 65 sec.:
(a)Engine speed: 1,400 rpm or more
(b)Vehicle speed: 130 km/h (81 mph)
(c)Throttle valve is not fully closed
(d)180 sec. or more after starting engine

Open or short in heated oxygen sensor (bank 1, 2 sensor 1)
circuit

Heated oxygen sensor (bank 1, 2 sensor 1)

Heated oxygen sensor heater (bank 1, 2 sensor 1)

EFI relay

Air induction system

Fuel pressure

PCV hose connection

PCV valve and hose

Injector

Gas leakage in exhaust system

ECM
HINT:

&$"!$ !%\b \f!\b
\f'%&!&%&$&""!$ &"'&#'&("&"
&&")*!%!%"$! 
%!%"$ $" & ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALLº
&"'&#'&("&"&&")*!%!%"$%%%&!\b &&")*!%!%"$$'&
*"#!"$%"$&

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.
WIRING DIAGRAM
Refer to DTC P0130 on page 05±363.
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing the ºA/F CONTROLº ACTIVE TEST (heated oxy-
gen sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST using the hand±held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume\
±12.5 % or +25 %.
(1) Connect the hand±held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 9\
0 sec.
(4) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROLº\
.
(5) Perform ºA/F CONTROLº 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 0.55 V
±12.5 %
lean output: Less than 0.4 V
05CKB±01

05±388
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0136OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 1 SENSOR 2)
DTCP0156OXYGEN SENSOR CIRCUIT MALFUNCTION (BANK 2 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05±363.
DTC NoDTC Detection ConditionTrouble Area
P0136
P0156
If the following two conditions are satisfied at a time
(2 trip detection logic):
(a) The ECM records cycles which the vehicle driving and
stops 8 times or more.
(b) There was no change in the rich and lean outputs from heated oxygen sensor (sensor 2) for the 360 seconds un-
der air fuel ratio feedback control. (Throttle was not closed)

Open or short in heated oxygen sensor (bank 1, 2 sensor 2)
circuit

Heated oxygen sensor (bank 1, 2 sensor 2)

Heated oxygen sensor heater (bank 1, 2 sensor 2)

EFI relay
HINT:

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

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

Sensor 2 refers to the sensor farthest away from the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05±363.
05CKC±01

05±374
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0133OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1)
DTCP0153OXYGEN SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05±363.
DTC No.DTC Detection ConditionTrouble Area
P0133
P0153
Response time for output voltage of heated oxygen sensor
(sensor 1) to change from rich to lean, or from lean to rich, is
1.0 sec. or more during idling after engine is warmed up
(2 trip detection logic)

Open or short in heated oxygen sensor (bank 1, 2 sensor 1)
circuit

Heated oxygen sensor (bank 1, 2 sensor 1)

Heated oxygen sensor heater (bank 1, 2 sensor 1)

EFI relay

Air induction system

Fuel pressure

Injector

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.
WIRING DIAGRAM
Refer to DTC P0130 on page 05±363.
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing the ºA/F CONTROLº ACTIVE TEST (heated oxy-
gen sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST using the hand±held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume\
±12.5 % or +25 %.
(1) Connect the hand±held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 9\
0 sec.
(4) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROLº\
.
(5) Perform ºA/F CONTROLº 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 0.55 V
±12.5 %
lean output: Less than 0.4 V
NOTICE:
There is a few seconds delay in the sensor 1 (front sensor) output. And there is about 20 seconds
delay in the sensor 2 (rear sensor).
05CKA±01

A76882
Battery
FL MAIN
IGN
B±G 11
E9
2
6
Engine
Room
J/B No.4 Engine Room
R/B No.1
and
Engine Room
J/B No.1
AM2
1 2
B±G 4
18Driver
Side J/B
B±W
B±R
WECM
DH DA
B±R
B±R
1
1A 1
1
4A
1
4B (LHD)(RHD)
IP1
IE4 1
1
I13
Ignition Switch
AM2
IG2
(LHD) J8
C
(RHD)J26
A
(LHD)J8
C
(RHD)J26
A B±WCheck
Engine
Warning
Light
W
C11
Combination Meter
22 9
J/C
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±515
AVENSIS REPAIR MANUAL (RM1018E)
CHECK ENGINE WARNING LIGHT CIRCUIT
CIRCUIT DESCRIPTION
If the ECM detects a trouble, it illuminates CHK ENG. At this time, the EC\
M sets a DTC in the memory.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Troubleshoot each trouble symptom in accordance with the chart below .
CHK ENG remains onStart inspection from step 1
CHK ENG is not illuminatedStart inspection from step 3
1CLEAR DTC
(a)Connect the hand±held tester to the DLC 3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Read the DTC (See page 05±294).
(d)Clear the DTC (See page 05±294).
(e) Check that the CHK ENG is not illuminated.
Standard: CHK ENG is not illuminated
OK REPAIR CIRCUIT INDICATED BY OUTPUTCODE (See page 05±309)
NG
05CJB±01

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±475
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0724BRAKE SWITCH ºBº CIRCUIT HIGH
CIRCUIT DESCRIPTION
This STP signal is used to detect that the brakes have been applied. The STP\
signal voltage is the same
as the one supplied to the stop lights.
The STP signal is used mainly to control the fuel cut±off engine speed (The fuel cut±off engine speed is re-
duced slightly when the vehicle is braking).
DTC No.DTC Detection ConditionTrouble Area
P0724The stop light switch does not turn off even the vehicle is driv-
en. (2 trip detection logic)
Short in stop light switch signal circuit

Stop light switch

ECM
WIRING DIAGRAM
Refer to DTC P0504 on page 05±455.
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.
1 CHECK OPERATION OF STOP LIGHT
(a) Check if the stop lights go on and off normally when the brake pedal is operated and released.
NG REPAIR OR REPLACE STOP LAMP SWITCHCIRCUIT
OK
2 READ VALUE OF HAND±HELD TESTER(STOP LIGHT SWITCH)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / STOP LIGHT SWº and read its value displayed on the hand±held tester.
Result:
Brake PedalSTP Signal
DepressedON
ReleasedOFF
OK CHECK FOR INTERMITTENT PROBLEMS
NG
05CJ7±01

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±485
AVENSIS REPAIR MANUAL (RM1018E)
DTCP2111THROTTLE ACTUATOR CONTROL SYSTEM
± STUCK OPEN
DTCP2112THROTTLE ACTUATOR CONTROL SYSTEM ± STUCK CLOSED
CIRCUIT DESCRIPTION
The throttle motor is operated by the ECM and it opens and closes the throttle valve using gears. The open-
ing angle of the throttle valve is detected by the throttle position sensor\
which is mounted on the throttle body.
And, it provides feedback to the ECM to control the throttle motor in order \
to make the throttle valve opening
angle properly in response to the driving condition. If this malfunction is d\
etected, the ECM shuts down the
power for the throttle motor, and the throttle valve is closed by the return spring. And the throttl\
e valve is
locked at a certain opening angle. Also, the whole electronically controlled t\
hrottle operation is cancelled until
the system returns to normal and the ignition switch is turned OFF.
HINT:
This electrical throttle system is no used throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2111The throttle motor locked during control by the ECM (Stuck
open)
Throttle control motor circuit

Throttle control motor
P2112The throttle motor locked during control by the ECM (Stuck
closed)
Throttle control motor

Throttle body

Throttle valve
WIRING DIAGRAM
Refer to DTC P2102 on page 05±483.
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.
1 INSPECT THROTTLE BODY ASSY(VISUALLY CHECK THROTTLE VALVE)
(a) Check it a foreign object has been caught between the throttle valve and the \
housing.
NG REMOVE FOREIGN OBJECT AND CLEANTHROTTLE BODY
OK
05CKQ±01

A82236
VCP1VCP2
EP2
EP1
LHD Accelerator Pedal Assy
321
6 54
RHD
Accelerator Pedal Assy
321
65 4
VCP2EP2
EP1
VCP1
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±499
AVENSIS REPAIR MANUAL (RM1018E)
DTCP2121THROTTLE/PEDAL POSITION
SENSOR/SWITCH ºDº CIRCUIT
RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
Refer to DTC P2120 on page 05±492.
DTC No.DTC Detection ConditionTrouble Area
P2121
Conditions (a) and (b) continue for 0.5 seconds:
(a) Difference between VPA and VPA2 exceeds the threshold
(b) IDL is OFF
Open or short in accelerator pedal position sensor circuit

Accelerator pedal position sensor

ECM
WIRING DIAGRAM
Refer to DTC P2120 on page 05±492.
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.
1 INSPECT ACCELERATOR PEDAL ASSY(ACCELERATOR PEDAL POSITION
SENSOR)
(a) Disconnect the A20 accelerator pedal position sensor
connector.
(b) Measure the resistance between each terminal. Standard (LHD):
Symbols (Terminal No.)Resistance
EP1 (3) ± VCP1 (6)225to475k
at 20 C (68 F)EP2 (1) ± VCP2 (4)2.25 to 4.75 k
at 20 C (68 F)
Standard (RHD):
Symbols (Terminal No.)Resistance
EP1 (1) ± VCP1 (4)225to475k
at 20 C (68 F)EP2 (3) ± VCP2 (6)2.25 to 4.75 k
at 20 C (68 F)
NG REPLACE ACCELERATOR PEDAL ASSY
OK
05CKU±01

A76903
NE+
G2+
NE±ECM Connector E11
A59781
A64984Camshaft Position Sensor
Component Side
C1
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±437
AVENSIS REPAIR MANUAL (RM1018E)
Reference: Inspection using the oscilloscope.
(1)During cranking or idling, check the waveform be-tween the terminals of the ECM connector.
ItemDetails
TerminalCH1: G2+ ± NE±
CH2: NE+ ± NE±
Equipment Setting5 V/Division, 20 ms/Division
ConditionDuring Cranking or idling
HINT:
The correct waveforms are as shown in the left.
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.
1 INSPECT CAMSHAFT POSITION SENSOR(RESISTANCE)
(a) Disconnect the C1 camshaft position sensor connector.
(b) Measure the resistance between the terminals of the camshaft position sensor.
Resistance:
835 to 1,400  at cold
1,060 to 1,645 at hot
NOTICE:
ºColdº and ºHotº shown above mean the temperature of
the coils themselves. ºColdº is from ±10
C (14
F) to 50
C
(122
F) and ºHotº is from 50
C (122
F) to 100
C (212
F).
NG REPLACE CAMSHAFT POSITION SENSOR
OK