TOYOTA AVENSIS 2005 Service Repair Manual

A54385
Wire Harness Side:Camshaft Position Sensor Connector
C1
Front View
A81087
E12
ECM Connector
G
−
G+
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −385
AVENSIS Supplement (RM1045E)
NG REPLACE CAMSHAFT POSITION SENSOR
OK
2 CHECK HARNESS AND CONNECTOR(CAMSHAFT POSITION SENSOR − ECM)
(a) Disconnect the C1 camshaft position sensor connector.
(b) Disconnect the E12 ECM connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
Camshaft position sensor (C1 −1) − G+ (E12 −23)Below 1
Camshaft position sensor (C1 −2) − G− (E12 −31)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
Camshaft position sensor (C1 −1) or G+ (E12 −23)
− Body ground
10 k
or higherCamshaft position sensor (C1 −2) or G − (E12 −31)
− Body ground10 k
or higher
(d) Reconnect the camshaft position sensor connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
3 CHECK SENSOR INSTALLATION(CAMSHAFT POSITION SENSOR)
NG TIGHTEN SENSOR
OK
4 CHECK CAMSHAFT TIMING PULLEY(TEETH OF PLATE)
(a) Check the teeth of the signal plate. NG REPLACE CAMSHAFT TIMING PULLEY
OK
REPLACE ECM (See page 10− 29)

A81003
MREL B−W
GR8
3 EFI MAIN Relay
W−BE9 E13
2 IE1
EE1
EFIB−R
(LHD) 1
B5
Battery FL MAINV4
VRV
VN 10
1
1
1
1A1 1
12 12 W
B−W 10GR
Engine Room R/B No. 1ECM
2
1
Engine Room
R/B No. 3 3
3 B
EC B−Y
(RHD) 05−376
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0234 TURBO/SUPER CHARGER OVERBOOST
CONDITION
DTC P0299 TURBO/SUPER CHARGER UNDERBOOST
DTC P1251TURBO/SUPER CHARGER OVERBOOST
CONDITION (TOO HIGH)
CIRCUIT DESCRIPTION
DTC No.DTC Detection ConditionTrouble Area
P0234
When the condition that the turbocharger pressure exceeds the
standard value for 0.5 second or more
(1 trip detection logic)SVRV
SOpen or short in VRV circuit
TbhP0234
P0299
P1251Actual turbocharger pressure is deviated 20 kPa (150 mmHg,
5.9 in.Hg) or more from the simulated target pressure for 60
seconds
(1 trip detection logic)STurbocharger
SVacuum hose
SEGR valve
SECM
WIRING DIAGRAM
05I7M−01

−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −377
AVENSIS Supplement (RM1045E)
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.
1 CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P0234, P0299 AND/OR
P125 1)
(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
P0234, P0299 and/or P1251A
P0234, P0299 and/or P1251 and other DTCsB
B GO TO RELEVANT DTC CHART (See page 05 −299)
A
2 CONNECTION OF VACUUM HOSES
HINT:
Check the vacuum hoses of turbocharger system connections. NG REPAIR OR REPLACE VACUUM HOSES
OK
3 CHECK VACUUM HOSES(CHECK VACUUM BETWEEN TURBOCHARGER −VRV
FOR TURBO CHARGER)
(a) Using a three −way connector, connect a vacuum gauge to the hoses between the E −VRV and turbo-
charger.
(b) Warm up the engine coolant temperature to above 75 ˚C (167 ˚F).
(c) Check the vacuum at the engine speed of 900 rpm.
Result:
Proceed toVacuum
A0 kPa (0 mmHg, 0 in.Hg) to 50 kPa (375 mmHg, 14.8 in.Hg)
BAbove 50 kPa (375 mmHg, 14.8 in.Hg)
B Go to step 8
A

A66060
E13
ECM ConnectorE12
VN
E1
A05967
E
−VRV Signal Waveforms
GND
5V/
Division
1 msec./ Division
05 −378
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
4 INSPECT ECM(VN VOLTAGE)
(a) Inspect using the oscilloscope.
(b) During idling, check the waveform between the specified terminals of the E12 and E13 ECM connectors.
Standard:
Tester ConnectionSpecified Condition
VN (E13 −10) − E1 (E12 −7)Correct waveform is as shown
OK REPLACE ECM (See page 10− 29)
NG
5 INSPECT VACUUM REGULATING VALVE ASSY(OPERATION) (See page 13− 8)
NG REPLACE VACUUM REGULATING VALVE ASSY
OK
6 INSPECT VACUUM REGULATING VALVE ASSY(RESISTANCE) (See page 13− 8)
NG REPLACE VACUUM REGULATING VALVE ASSY
OK

A56869
V4VRV Connector
Wire Harness Side:
Front View
A80456
E13
ECM ConnectorE2
VN
A93008
EGR Valve
Component Side:
E17
1
2
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −379
AVENSIS Supplement (RM1045E)
7 CHECK HARNESS AND CONNECTOR(VRV − ECM)
(a) Disconnect the V4 VRV connector.
(b) Disconnect the E13 ECM connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
VN (E13 −10) − (V4 −2)Below 1
E2 (E13 −28) − (V4 −1)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
VN (E13−10) or (V4 −2) − Body ground10 k
or higherE2 (E13 −28) or (V4 −1) − Body ground10 k
or higher
(d) Reconnect the VRV connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS AND CONNECTOR
OK
8 INSPECT TURBOCHARGER SUB −ASSY (See page 13− 6)
NG REPLACE TURBOCHARGER SUB −ASSY
(See page 13−1 2)
OK
9 INSPECT EGR VALVE ASSY
(a) Disconnect the E17 EGR valve connector.
(b) M easur e t he r esist ance bet ween t he t er m inals of t he EGR valve.
Standard:
Tester ConnectionSpecified Condition
1− 26.8
at 20 _ C (68 _ F)
(c) Reconnect the EGR valve connector.
NG REPLACE EGR VALVE ASSY (See page 14−1 08)
OK

A66060
PIM (+)
E2 (
−)
E12
ECM Connector
E13
05
−380
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
1 0 CHECK AND REPLACE MANIFOLD ABSOLUTE SENSOR
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the terminals of the E12
and E13 ECM connectors.
Standard:
Tester ConnectionConditionSpecified Condition
PIM (E12 −28) −
E2 (E13 −28)Applied negative pressure
of 40 kPa (300 mmHg, 11.8 in.Hg)
1.4 to 2.0 V
PIM (E12 − 28) −
E2 (E13 −28)Same as atmospheric
pressure2.0 to 2.6 V
PIM (E12 − 28) −
E2 (E13 −28)Applied positive pressure
of 69 kPa (518 mmHg, 20.4 in.Hg)
3.0 to 3.6 V
HINT:
Even if the voltage output from the manifold absolute sensor is
within the standard level, there may be a problem in the sensor
by age deterioration.
NG REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
OK
REPLACE ECM (See page 10− 29)

A81481
EDU Wiring Diagram:COM3
COM1 COM2
Pressure
Discharge
Valve
Injector
INJ#1
INJ#4INJ#2INJ#3
PRV
GND
EDU Connector
Control
Circuit
DC/DC
Converter
From Battery
IJT#1
IJT#4
IJT#2 IJT#3 PRD
INF
ECM
Maximum 150 V
Confirmation
Pulse Command
Pulse
Warning: Terminal J, I, H, K, L, M, N and S are high voltage
E4
E5
Maximum 150 V
EDU
05
−368
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0200 INJECTOR CIRCUIT / OPEN
HINT:
S For more information on the EDU, see page 05 −255.
S If P0200 is present, refer to the diagnostic trouble codes (DTCs) table for the fuel system on page
05 −255.
CIRCUIT DESCRIPTION
The EDU has been adopted to drive the injector at high speeds. The EDU has realized the high −speed driv-
ing under high −pressurized fuel conditions using the DC/DC converter that provides a high −voltage, and the
quick −charging system.
Soon after the EDU receives an injection command (IJT) signal from the ECM, the EDU responds to the com-
mand with injector injection confirmation (IJF) signal when the current is applied to the injector.
05DVZ −02

A81495
Malfunction Detection:
ECMCommand Signal (IJT)
EDU
Confirmation Signal (IJF)
Injection
Command Signal
Injection
Confirmation SignalIJFON
OFF
NormalAbnormal
IJT
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−369
AVENSIS Supplement (RM1045E)DTC No.
DTC Detection ConditionTrouble Area
P0200
SOpen or short in EDU or injector circuit
After engine is started, there is no injection confirmation (IJF)
signal from EDU to ECM, despite the ECM sending injection
command (IJT) signal to the EDU
(1 trip detection logic)SOpen or short in EDU circuit
SInjector
SEDU
SECM
MONITOR DESCRIPTION
P0200 (Open or short in EDU or injector circuit):
ECM continuously monitors both injection command (IJT) signal and injection confirmation (IJF) signal. This
DTC will be set if the ECM judges that the number of IJT signals and IJF signals are inconsistent.
The injectors are grounded over a FET (field effect transistor) and a serial resistor. This resistor creates a
voltage drop, which is monitored by the EDU, in relation to the current drawn by the injector. When the injector
current becomes too high, the voltage drop over the resistor becomes higher than a specified level and for
that injector no IJF signal is sent to the ECM.
P0200 refers to a malfunction of the injector drive circuit (EDU) or injector circuit.
If this DTC is present, the ECM enters the fail−safe mode and limits the engine power. The fail−safe mode
continues until the ignition switch is turned to OFF.
MONITOR STRATEGY
Required SensorsIJF signal from EDU
Frequency of operationContinuous
Duration10 seconds
CHK ENG Operation1 driving cycle
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
Engine speed500 rpm−
Battery voltage11 V−
Ignition switchON

A81001
B−Y (RHD)
BATTECM
E102 7
IE3B−Y
10
EE17
IO1
INJF E1325
R−B
E57
IJF B−W
+B
E91
B−W 6
IK1 B−W
GR
MREL 8
GR 2
IE1 E9
Y
IREL 10 4
IE2 E9Y GR
B−WB−W
111
1 1 1 11
1 3
2 5EFI
MAIN
Relay1 3
2 5EDU
Relay
R−B
B7
EE1(LHD) (RHD)
EDU
#1 E1324
G−W
IJT#1
#2 E1323
W−R
IJT#2
#3 E1322
R−W
IJT#3
#4 E1321
W−L
IJT#4E56
E53
E52
E55
1
11 2
EFI
1A
3
3
B
FL MAIN
BatteryEngine
Room
R/B No. 1
Engine Room
R/B No. 3W−B
W−B
EC(Shielded)
D J12 E J12
E J13 D J13
BR J/CBR
W−B G
EIE48
BATTERY
E5 GND1W INJ#1
E44
12B−R I5 Injector No. 1
B
INJ#4
E43
12B−R I8 Injector No. 4
Y
INJ#2
E42
12L I6 Injector No. 2
V
INJ#3
E41
12L I7 Injector No. 3 B−R
COM1E45
L
COM2E46 BRE58
E47
COM3 BPRD E1332
R−L
E54
PRD Engine
Room
R/B No. 1
(Shielded)
D J12BRPRV 1
EA1
2
EA1 1
2W
W
B
P3
Pressure
Discharge
Valve
B−R (LHD)
B−R (LHD)
B−Y (RHD)
05−370
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
TYPICAL MALFUNCTION THRESHOLDS
Threshold
If injection missing counter* is accumulated the specified number of times successively, or if injection missing counter for one of the
cylinders is accumulated the specified number of times successively (Approximately 1 second or more)
*: Injection missing counter increments when no IJF signal from the EDU is sent despite the ECM sending the IJT signals
WIRING DIAGRAM

A81508
ECM EDU
IJT#1 INJF
COM1 INF
IJT#4
IJT#2
IJT#3 #1
#4
#2
#3INJ#1
INJ#4
INJ#2
INJ#3 COM2
Injector
AB
Warning: Terminal COM1, COM2, and INJ#1to 4 are high−voltage
C DHigh−voltage Area
A09438
#1
#2#3
#45V/
Division
20 msec./Division Signal Waveform
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−371
AVENSIS Supplement (RM1045E)
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.
Malfunction PointTrouble Area
ASECM
B (if A is normal)SOpen or short in ”#1 to #4 (ECM)”−”IJT#1 to IJT#4 (EDU)” harness or connector
C (if A and B are normal)
SOpen or short in ”INJ#1 to INJ#4 (EDU)”−”COM1 and/or COM2” (EDU) circuit
SInjector
SEDU
D (if A, B and C are normal)SOpen or short in ”INJ (EDU)”−”INJF (ECM)” circuit (P1271 is set simultaneously)
(a) Reference: Inspection using the oscilloscope.
During idling, the correct waveform is as shown in the dia-
gram on the left.
Inspection PointsSpecified Condition
A and BCorrect waveform is as shown