2005 TOYOTA AVENSIS diagram

A81015
Engine
Room
R/B No. 1W
9ECM
W
E9 12
1 2
B
B±W22 1
3
Battery4
2 DH 6
B±R B±R
C11
Combination
Meter Assy
Check
Engine
Warning
Light AM2
IG2
AM2
Driver
Side
J/B
FL MAINEngine
Room
R/B
No. 3
3B 1A 1B±R
IE41
(LHD)IP11
(RHD)
18 DA
J8C
(LHD)J26A
(RHD)J8C
(LHD)J26A
(RHD) J/CB±W IGNI13
Ignition
Switch 05±694
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
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 the DTC in its
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
05B62±03

A81013
ECM
+BMREL IGSW J27
9
B±W I13
Ignition Switch
6IGNB±W E
E1
EE110BR
W±B 1Driver Side J/B
2 2
1E9
E9
E98
1
7
E12 J26A
B±W
C C B±W
J8
J/C DA 18
DH2
4
B±Y
EFI51
32 EFI
MAIN
Relay
B±W Engine Room R/B No. 1IK1
8J/C
IE12
BR B±R
Battery AM2B±W
EC
EI
AM2 IG2
GR
B B
33
Engine Room R/B No. 3
FL MAIN1 1
1 1A1 1
1 1 B±R B±R
IE4 1(LHD)
IP1
1(RHD)B±W (RHD) (RHD)
(LHD)
(LHD)
GR 05±686
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
ECM POWER SOURCE CIRCUIT
CIRCUIT DESCRIPTION
When the ignition switch is turned ON, battery positive voltage is applied to terminal IGSW of the ECM and
the EFI MAIN relay (Marked: EFI MAIN) control circuit in the ECM sends a signal to terminal MREL of the
ECM switching on the EFI MAIN relay.
This signal causes current to flow to the coil, closing the contacts of the EFI MAIN relay and supplying power
to terminal +B of the ECM.
If the ignition switch is turned off, the ECM continues to switch on the EFI MAIN relay for a maximum of 2
seconds for the initial setting of the throttle valve.
WIRING DIAGRAM
05B5V±03

A76878
A20
Accelerator Pedal
Position Sensor
VCP16 (LHD)
E926ECM
VCPA B
4 (RHD)
(LHD)B
(LHD) 5
IG2
B
(RHD)
VPA15 (LHD)
E922
VPA G
5 (RHD)
(LHD)G
(LHD) 6
IG2
G
(RHD)
EP13 (LHD)
E928
EPA Y
1 (RHD)
(LHD)Y
(LHD) 1
IG2
Y
(RHD)
VCP24 (LHD)
E927
VCP2 B
6 (RHD)
(LHD)B
(LHD) 7
IG2
B
(RHD)
VPA22 (LHD)
E923
VPA2 W
2 (RHD)
(LHD)W
(LHD) 2
IG2
W
(RHD)
EP21 (LHD)
E929
EPA2 Y
3 (RHD)
(LHD)Y
(LHD) 3
IG2
Y
(RHD)
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±677
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, etc. at the time of the malfunction.

A81505
Pressure Discharge Valve Cross Section Diagram
From Common Rail
(High Pressure)To Fuel Tank
(Low Pressure)
Valve
Solenoid
05±664
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
HINT:
The solenoid valve of the pressure discharge valve is the same type of the injector solenoid valve.
DTC No.DTC Detection conditionTrouble Area
P1271
Open or short in pressure discharge valve circuit. There is no
valve opening confirmation signal (IJF) from EDU to ECM,
despite the ECM sending valve opening command signal
(PRD) after the engine has been started (1 trip detection).
Open or short in pressure discharge valve circuit

Open or short in pressure discharge valve itself

EDU

ECM
P1272
Pressure discharge valve closed malfunction. Actual pressure
decreasing rate deviates from the simulated pressure drop rate
by the ECM after the ignition switch is turned OFF (2 trip detec-
tion).
Open or short in pressure discharge valve circuit (P1271 is
set simultaneously)

Pressure discharge valve

Supply pump

ECM
HINT:
After confirming DTC ºP1271 and/or P1272º, use the hand±held tester to confirm the fuel pressure inside
common rail in the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / COMN RAIL PRESSº.
Engine SpeedFuel Pressure (MPa)
IdlingApprox. 30 to 40
Running the engine at 2,500 rpm (No engine load)Approx. 50 to 100

A80999
EDU
1 R±L
PRDECM
E1332
1
EA1 PRDR±L
E54
W
PRVE58
B
COM3
E472 P3
Pressure Discharge Valve
W
B 2
EA1
(Shielded) (Shielded)
BR
BR
BR
EIJ12D
J12E
J13D J13E J/C
A81507
ECMEDU
PRD
Pressure
Discharge
Valve
INJFCOM3 A
PRD
IJFPRV B
C
D
Warning: Terminals COM3 and PRD are high±voltage
High±voltage Area
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±667
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
PULSE GENERATION INSPECTION
HINT:
Problem area can be identified by inspecting waveform at the following inspection points.
HINT:
Inspect the following inspection points ºA and Dº or ºB and Cº at the same time.
Malfunction pointTrouble area
A
ECM
B (If A is normal)
Open or short in ºPRD (ECM)º ± ºPRD (EDU)º circuit.
C (If A and B are normal)

Open or short in ºPRV (EDU)º ± ºCOM3 (EDU)º circuit.

Pressure discharge valve

EDU
D (If A, B and C are normal)
Open or short in ºIJF (EDU)º ± ºINJF (ECM)º circuit. (P0200 is set simultaneously)

A81513
5 V/
Division
20 msec./Division PRDSignal Waveform
A82882
5 V/
Division
20 msec./Division INJFSignal Waveform
05±668
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
(a) Reference: Inspect using the oscilloscope.
The correct waveform is as shown in the diagram on the
left.
Inspection pointSpecified condition
A and BCorrect waveform is as shown
(b) Reference: Inspect using the oscilloscope.
The correct waveform is as shown in the diagram on the
left.
Inspection pointSpecified condition
C and DCorrect waveform is as shown
INSPECTION PROCEDURE
HINT:

After completing repair, confirm P1271 and/or P1272 is not set again.

If P0200 and P1271 are present simultaneously, there is open in the INJF wire harness between the
EDU and ECM, or there is open in the wire harness for both of the injector the pressure discharge valve.

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, etc. at the time of the malfunction.
1 READ OUTPUT DTC(DTC P1271 AND/OR P1272)
(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 / DTC INFO / CURRENT CODESº.
(d) Read the DTCs.
Result:
Display (DTC output)Proceed to
ºOnly DTC P1271º or ºP1271 and P1272º are outputA
Only DTC P1272 is outputB
B Go to step 8
A

A80997
S6
Suction Control ValveECM
E132
PCV+
2 1
LG LG±R
PCV± E131
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±655
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0627 FUEL PUMP CONTROL CIRCUIT / OPEN
CIRCUIT DESCRIPTION
DTC No.DTC Detection ConditionTrouble Area
P0627Open or short in suction control valve circuit for more than 0.5
sec. (1 trip detection logic).
Open or short in suction control valve circuit

Suction control valve

ECM
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, etc. at the time of the malfunction.
05CPZ±01

A81011A81005
ECM
ALT 8
E13
G±Y
1
2 3
Battery
EI B±L
B
FL
MAINALT
12
3B
Engine Room
R/B No. 3
IJBR
B
B 35 15DH
DN 1 DH
18DB 9 DA ECU±IG I13
Ignition Switch 3
1
AM1AM1 IG1
G±R
ED1 1
WDriver
Side J/B
IG1
RelayA12 1
BB±L
A11 3
MY
A11 4
LRL 9
E12
Generator
IGS
21
A11A11
R±W
B
IK21
EE15
B
R±W R±WW±B
ALT±S
1 2 1
11AEngine
Room
R/B No. 1E1 7
E12
BBR G J10(LHD)
C J20(RHD)
J/C
G J10(LHD)
C J20(RHD) 33
W±B 05±652
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM