2005 TOYOTA AVENSIS wiring diagram

A79413
From
Speed SensorSkid
Control
ECU4±Pulse
Combination
Meter4±Pulse
ECM
A79092
C11
Combination Meter
Junction Connector
17
V±W
E10ECM
V±W
SPD 18
J10
J20 H
*1*2
*1: LHD
*2: RHD J20 J10
*1 *2 HHH 05±98
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0500 VEHICLE SPEED SENSOR MALFUNCTION
CIRCUIT DESCRIPTION
The speed sensor for skid control ECU detects the wheel speed and sends the appropriate signals to the
skid control ECU.
The skid control ECU converts these signals into a 4±pulse signal and outputs it to the combination meter.
After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit in-
side the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based
on the frequency of these pulse signals.
DTC No.DTC Detecting ConditionTrouble Area
P0500
During the vehicle is being driven, no vehicle speed sensor
signal to the ECM
(1 trip detection logic: A/T)
(2 trip detection logic: M/T)
Open or short in speed sensor circuit

Speed sensor

Combination meter

ECM

Skid control ECU
WIRING DIAGRAM
05B45±02

A79073
From
Terminal 3 of
EFI Relay
(See Page 05±124)B±W
EA113
B±W 2V5
VSV for EVAP
1 W±G E1312
EVP1ECM
Engine Room R/B No.4 EFI No.2
4 1 2
B±W
4
05±94
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0443 EVAPORATIVE EMISSION CONTROL SYSTEM PURGE CONTROL VALVE CIRCUIT
MALFUNCTION
CIRCUIT DESCRIPTION
To reduce HC emissions, evaporated fuel from the fuel tank is routed through the charcoal canister to the
intake manifold for combustion in the cylinders.
The ECM changes the duty signal to the VSV for EVAP so that the intake quantity of HC emissions becomse
properly for the driving conditions (engine load, engine speed, vehicle speed, \
etc.) after the engine is
warmed up.
DTC No.DTC Detecting ConditionTrouble Area
P0443Proper response to ECM command does not occur (1 trip
detection logic)
Open or short in VSV for EVAP circuit

VSV for EVAP

ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f  \b \f\f
 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.
05C6D±01

A63955
GND
CH1
(G2)
CH2
(NE+) GND
05±88
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0340CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
The camshaft position sensor (G2 signal) consists of a magnet, iron core \
and pickup coil.
The G2 signal plate has 3 teeth on its outer circumference and is instal\
led on the camshaft timing pulley.
When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil changes,
causing fluctuations in the magnetic field and generating an electromoti\
ve force in the pickup coil.
The NE signal plate (crankshaft timing pulley) has 34 teeth and is instal\
led to the crankshaft. The NE signal
sensor generates 34 signals at every engine revolution. The ECM detects \
the crankshaft angle and the en-
gine revolution based on the NE signals, and the cylinder and the angle of the VVT based on the combination
of the G2 and NE signals.
DTC No.DTC Detecting ConditionTrouble Area
P0340

No camshaft position sensor signal to the ECM during crank-
ing

Open in NE± circuit

Open or short in camshaft position sensor circuit

Camshaft position sensor

Intake camshaft

Timing chain has jumped a tooth

ECM
Reference: Inspection using the oscilloscope.
HINT:
The correct waveform is as shown on the left.
ItemContents
TerminalCH1: G2 ± NE±
CH2: NE+ ± NE±
Equipment Set5V/DIV, 20ms/DIV
ConditionDuring cranking or idling
WIRING DIAGRAM
Refer to DTC P0335 on page05±84.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f  \b \f\f
 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.
05B42±03

A79089
C1
Camshaft Position Sensor(Shielded)
1 2ECM
(Shielded) 1
2
EHR
NE+NE± G2 W
G C6
Crankshaft Position Sensor
R RE13
E13
E1326
34
27
BR E
J12
Junction
ConnectorE E
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±85
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

Read freeze frame data using    
 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.

Perform troubleshooting on ºDTC P0335º first. If no trouble is found, troubleshoot the following me-
chanical system.



A05134
2.2V
A79088
K1
Knock SensorECM
FKN+
E12 (Shielded)
1EB1
11
W
E122
FKN± B
EH J12
J13
Junction
Connector EDEB1 2WB2
BR
BR J12 J13E D
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±81
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0325 KNOCK SENSOR 1 CIRCUIT MALFUNCTION
(BANK 1)
CIRCUIT DESCRIPTION
Knock sensor is fitted on the cylinder block to detect the engine knocking. This sensor contains a piezoelec-
tric element which generates a voltage when it becomes deformed, which occurs when the cylinder block
vibrates due to knocking. If engine knocking occurs, the ignition timing is delayed to suppress it.
DTC No.DTC Detecting ConditionTrouble Area
P0325No knock sensor signal to the ECM with engine speed 3,000
rpm or more
Open or short in knock sensor circuit

Knock sensor (under±torqued or loose)

ECM
HINT:
If the ECM detects the DTC ºP0325º, it enters the fail±safe mode in which the corrective retarded angle value
is set to the maximum value.
Reference:
Inspection using the oscillascope.
(1) Run the engine at 4,000 rpm, check the waveform
between terminal KNKL of the ECM connector and
body ground.
HINT:
The correct waveform is as shown on the left.
(2) Spread the time on the horizontal axis, and confirm
that period of the wave is 80
seconds (Normal
mode vibration frequency of knock sensor: 11.7
kHz).
HINT:
If the vibration frequency in the normal mode is not 11.7 kHz,
the sensor is out of order.
WIRING DIAGRAM
05C6C±01

A81014
4 D5
DLC3
CGTC13
W±BCBW±L20
E9TCECM
W±L
W±B J8
J/C
BB
J16
J/C
A
IP
IOCenter J/B
CA 36
A(RHD) W±B
(RHD)
(LHD)W±B
(LHD) (LHD)W±L
(LHD)
W±L W±L
(RHD)
(RHD) J21D
J20BDB DC173 Driver Side J/B
3 2 1 45678
9 1 0 111 21 31 41 51 6
DLC3
A04550
CG (±)TC (+)
DLC3
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±141
AVENSIS REPAIR MANUAL (RM1018E)
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
Terminals TC and CG are located in the DLC3. When connecting these terminals, DTCs in normal mode or
check mode can be read through the CHK ENG flashing in the combination meter.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

Even though terminal TC is not connected to terminal CG, the CHK ENG blinks.

For the above phenomenon, an open or short in the wire harness, or malfunction inside the ECM is
the likely cause.
1 CHECK DLC3(TC VOLTAGE)
(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the DLC3.
Standard:
Symbols (Terminal No.)Specified condition
TC (13) ± CG (4)9 to 14 V
OK Go to step 3
NG
05C6K±01

A81015
Engine
Room
R/B No. 1
Engine
Room
J/B No. 1W
9ECM
W
E9 11
1 2
B±W22 1
4A
Battery4
2I13
Ignition
Switch
DH 6
B±R B±R
C11
Combination
Meter Assy
Check
Engine
Warning
Light AM2
IG2
AM2
Driver
Side
J/B
FL MAINEngine
Room
J/B
No. 4
4BB±G 1A 1B±R
IE41
(LHD)IP11
(RHD)
18 DA
J8C
(LHD)J26A
(RHD)J8C
(LHD)J26A
(RHD) J/CB±W IGN
1
1
B±G
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±139
AVENSIS REPAIR MANUAL (RM1018E)
CHECK ENGINE WARNING LIGHT CIRCUIT
CIRCUIT DESCRIPTION
If the ECM detects a trouble, the CHK ENG is illuminated. At this time, the ECM records 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
05C6J±01

A79100
I13
Ignition Switch
45
B±RB±Y
6
1
ST
2
6Fuse
Block
B±W
B±R B±R
1
1
IP1 IE4
(*1)
(*2)
B±R
1
2
1
1A 1AM2Engine
Room
R/B No.1
and
Engine
Room
J/B No.1
B±GB±Y
55
ST
Relay 51
32
55J13J12 BB
CA9
6N1
Neutral
Start
SwitchB±Y
(*4)
ECM
STA B±Y9
E12 B±W
(*3)
B±Y
(*3)
A J13 J12
J12
Junction
Connector
Engine
Room
J/B No.4 4A 1
1
4B
B±G
FL MAIN
BatteryB±R
IJDriver
Side R/B
BW±B
Driver
Side J/B DJ 2
DA 9
W±B B
S4
S511
Stater IK1
7*1: LHD
*2: RHD
*3: A/T
*4: M/T 05±136
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM