2005 TOYOTA AVENSIS wiring

−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
05 −479
AVENSIS Supplement (RM 1045E)
DTC P2 121 THROTTLE/PEDAL POSITION SENSOR/
SWITCH ”D” CIRCUIT RANGE/
PERFORMANCE
CIRCUIT DESCRIPTION
Refer to DTC P2 120 on page 05 −473.
DTC No.DTC Detection ConditionTrouble Area
P2 121
Conditions (a) and (b) continue for 0.5 second:
(a) Difference between VPA and VPA2 exceeds the threshold
(b) IDL is OFFS Accelerator pedal position sensor circuit
S Accelerator pedal position sensor
S ECM
HINT:
After confirming DTC P2 121, check the accelerator pedal position sensor output voltage using the hand −
held tester. Reference:
Accelerator Pedal Position (Voltage Output)
Trouble AreaAccelerator Pedal ReleasedAccelerator Pedal DepressedTrouble Area
ACCEL POS # 1ACCEL POS #2ACCEL POS #1ACCEL POS #2
Normal condition0.5 to1.1 V1.2 to 2.0 V2.6 to 4.5 V3.4 to 5.3 V
VCP circuit open0 to 0.2 V0 to 0.2 V0 to 0.2 V0 to 0.2 V
VPA circuit open or ground short0 to 0.2 V1.2 to 2.0 V0 to 0.2 V3.4 to 5.3 V
VPA2 circuit open or ground short0.5 to 1.1 V0 to 0.2 V2.6 to 4.5 V0 to 0.2 V
EP circuit open4.5 to 5.5 V4.5 to 5.5 V4.5 to 5.5 V4.5 to 5.5 V
WIRING DIAGRAM
Refer to DTC P2 120 on page 05 −473.
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, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
05I7T −01

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)(From September, 2003)
05−475
AVENSIS Supplement (RM1045E)
HINT:
After confirming DTC P2120, P2122, P2123, P2125, P2127, P2128 and P2138, check the accelerator pedal
position sensor output voltage using the hand−held tester.
Reference:
Accelerator Pedal Position (Voltage Output)
Trouble AreaAccelerator Pedal ReleasedAccelerator Pedal DepressedTroubleArea
ACCEL POS #1ACCEL POS #2ACCEL POS #1ACCEL POS #2
Normal condition0.5 to1.1V1.2 to 2.0 V2.6 to 4.5 V3.4 to 5.3 V
VCP circuit open0 to 0.2 V0 to 0.2 V0 to 0.2 V0 to 0.2 V
VPA circuit open or ground short0 to 0.2 V1.2 to 2.0 V0 to 0.2 V3.4 to 5.3 V
VPA2 circuit open or ground short0.5 to1.1V0 to 0.2 V2.6 to 4.5 V0 to 0.2 V
EP circuit open4.5 to 5.5 V4.5 to 5.5 V4.5 to 5.5 V4.5 to 5.5 V
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data usingthe hand−held tester.Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air−fuel ratio was lean or rich, and other data
from the time the malfunction occurred.

A91215
VCECM
PEX
E2 W R−W
BR D22
Differential Pressure Sensor
13
218
E13
20
E12
28
E13 VC
GNDVPR−W
W
BR EE1
EE1
EE1 4
9 8
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−459
AVENSIS Supplement (RM1045E) DTC No.
DTC Detection ConditionTrouble Area
P1425
Differential pressure sensor output voltage is less than
0.4 V, or more than 4.8 V for 3 seconds or more
(1trip detection logic)
SOpen or short in differentialpressure sensor circuit
P1427
Differential pressure sensor output voltage is less than
0.4 V for 3 seconds or more
(1trip detection logic)
SOpenorshortindifferentialpressuresensorcircuit
SIncorrect arrangement differential pressure sensor hose pip-
ing
SDifferential pressure sensor
P1428
Differential pressure sensor output voltage is more than
4.8 V for 3 seconds or more
(1trip detection logic)
ee tap essu ese so
SECM
HINT:
SDTC P1426 (Differential pressure sensor [installation]) will be present if there is incorrect vacuum hose
arrangement of the differential pressure sensor.
SAfter confirming DTC P1425, P1427 and P1428, check the differential pressure in the ”DIAGNOSIS
/ OBD/MOBD / DATA LIST / ALL / DPNR DIFF PRESS ” using the hand−held tester.
Reference:
Engine ConditionDifferential Pressure OutputSensor Condition
Ignition Switch ONApproximately 0 kPaNormal
Always3 kPaOpen or short circuit
3,000 rpm (No engine load)Negative outputIncorrect arrangement of hose piping
MONITOR DESCRIPTION
In order to detect abnormality in the differential pressure sensor at any time, the ECM always monitors output
voltage from the sensor. When the sensor output voltage deviates from the normal operating range (between
0.4 V and 4.8 V) for more than 3 seconds, the ECM interprets this as malfunction of the sensor circuit and
illuminates the CHK ENG.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data usingthe hand−held tester.Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air−fuel ratio was lean or rich, and other data
from the time the malfunction occurred.

A91206
Malfunction Detection:
Abnormal
(Low Volume)ON
OFF
Time
DPNR
Catalyst
Regeneration
(Activation of Fuel Addition)
Normal
A/F Ratio
Learning ValueLean
Rich
Abnormal
(Excess Volume)
Abnormal
(Low Volume)
Abnormal
(Excess Volume)
Threshold
OFF
HighLow
DPNR
Catalytic Converter
Temperature
(Exhaust Gas Temperature)
Normal (More than 600
_ C[ 1,11 2_ F])
Detect P 1386
05 −448
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
WIRING DIAGRAM
Refer to DTC P2047 on page 05 −470.
INSPECTION PROCEDURE
HINT:
SRead freeze frame data using the hand−held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.
S”Learning value” used in here represents a correction learning value of the fuel addition volume to raise
the DPNR catalyst temperature to a target range.

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
INFPRV B
C
D
Warning: Terminals COM3 and PRD are high−voltage
High−voltage Area
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−439
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
PULSE GENERATION INSPECTION
HINT:
Problem area can be identified by checking the waveform at the following terminals.
HINT:
If you check the ECM side first, inspect the following A and D in sequence. If you check the EDU side first,
inspect the following B and C in sequence. This shortens inspecting time.
Inspection PointTrouble Area
ASECM
B (If A is normal)SOpen or short in ”PRD (ECM)”−”PRD (EDU)” circuit
C (If A and B are normal)
SOpen or short in ”PRV (EDU)”−”COM3 (EDU)” circuit
SPressure discharge valve
SEDU
D (If A, B and C are normal)SOpen or short in ”INF (EDU)”−”INJF (ECM)” circuit (P0200 is set simultaneously)

05−432
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
MONITOR DESCRIPTION
P 1238 (Injection malfunction, exclude open or short in injector circuit):
This DTC will be set if the engine speed fluctuation between each cylinder is large. The ECM monitors
changes in the crankshaft rotation speed using the crankshaft position sensor for detecting poor combus-
tion. Also, it identifies a faulty cylinder using the camshaft position sensor. The fluctuation counter incre-
ments when irregular crankshaft rotation speed variation exceeds the threshold at idling. Therefore, either
one of the cylinders has very poor combustion (Rough idle), the ECM sets this DTC.
MONITOR STRATEGY
Required SensorsCrankshaft position sensor
Frequency of operationContinuous
Duration10 minutes
CHK ENG Operation2 driving cycles
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
EngineAt idling
Engine speed500 rpm−
Engine coolant temperature20 _ C (68 _ F)−
TYPICAL MALFUNCTION THRESHOLDS
Threshold
The number of irregular changes in the crankshaft rotation speed
HINT:
The number of irregular changes in the crankshaft rotation speed indicates the insufficient combustion.
WIRING DIAGRAM
Refer to DTC P0200 on page 05 −368.
INSPECTION PROCEDURE
HINT:
SIf DTCs other than P1238 are present simultaneously, first perform troubleshooting for them.
SRead freeze frame data using the hand −held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P 1238)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Select the item ”DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES”.
(d) Read DTCs. Result:
Display (DTC output)Proceed to
P1238A
P1238 and other DTCsB
HINT:
If any other codes besides P1238 are output, perform troubleshooting for those DTCs first.

A80456
E13
ALT
ECM Connector
A81490
A11
Wire Harness Side: Generator (alternator) Connector
Front View
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −427
AVENSIS Supplement (RM1045E)
TYPICAL MALFUNCTION THRESHOLDS
Threshold
There is no duty ratio output from terminal M of the generator (alternator)
WIRING DIAGRAM
Refer to DTC P0380 on page 05 −386.
INSPECTION PROCEDURE
HINT:
SIf different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
SRead freeze frame data using the hand −held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.
1 CHECK IF CHARGE LAMP IS ILLUMINATED
HINT:
Run the engine at 2,000 rpm, and check if the charge lamp located in the combination meter remains illumi-
nated.
YES Go to step 3
NO
2 CHECK HARNESS AND CONNECTOR(GENERATOR (ALTERNATOR) −ECM)
(a) Disconnect the E13 ECM connector.
(b) Disconnect the A11 generator (alternator) connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
ALT (E13 −8) −M (A11 −3)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
ALT (E13 −8) or M (A11 −3) −Body ground10 k
or higher
(d) Reconnect the ECM connector.
(e) Reconnect the generator (alternator) connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

A81010
12
E10
2 Engine Room R/B No. 1
IE37
BATT
Battery BB
33
FL MAIN1
1A
1 Engine Room R/B No. 3
EFI
IO17
B−YECM
(LHD) (RHD)
B−R (LHD)
B−Y (RHD)
05−422
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0560 SYSTEM VOLTAGE
CIRCUIT DESCRIPTION
While the ignition switch is OFF, the battery voltage is supplied to terminal BATT of the ECM for storing DTCs
and fuel injection feedback learning values.
DTC No.DTC Detection ConditionTrouble Area
P0560
Condition (a) or (b) continues:
(a) Significant decrease in battery voltage
(b) Open in back−up power source circuit
(1 trip detection logic)SOpen in back−up power source circuit
SLow battery voltage
SECM
HINT:
If DTC P0560 appears, the ECM does not store other DTCs.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data usingthe hand−held tester.Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air−fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
05CPX−05