2005 TOYOTA AVENSIS Service Repair Manual

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Page 673 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A54396
VG Wire Harness Side
Mass Air Flow Meter ConnectorE2G A6
A80454
VG E12
ECM ConnectorEVG
05±580
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK HARNESS AND CONNECT

Page 674 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A54396
+B (+)
Wire Harness Side
Mass Air Flow Meter ConnectorA6
A66056
Engine Room R/B No. 1
EFI Main Relay
A66060
EVG
E12
ECM Connector
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
05±581
AVENSIS REPAIR MANU

Page 675 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A54396
VG Wire Harness Side
Mass Air Flow Meter ConnectorE2G A6
A80454
VG E12
ECM ConnectorEVG
05±582
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
7 CHECK HARNESS AND CONNECT

Page 676 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual ± 20 0 20 40 60 80 100
(± 4) 32 68 104 140 176 212 30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
A56991
(Fig. 1)
Acceptable
Resistance k
Temp.C (F)
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±573
AVENSIS REPAIR M

± 20 0 20 40 60 80 100
(± 4) 32 68 104 140 176 212 30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
A56991
(Fig. 1)
Acceptable
Resistance k
Temp.C (F)
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
05±573
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0095 INTAKE AIR TEMPERATURE SENSOR 2
CIRCUIT
DTC P0097 INTAKE AIR TEMPERATURE SENSOR 2
CIRCUIT LOW
DTC P0098 INTAKE AIR TEMPERATURE SENSOR 2
CIRCUIT HIGH
CIRCUIT DESCRIPTION
The inlet air temperature sensor is built into the intake air con-
nector and senses the inlet air temperature. A thermistor built
in the sensor changes the resistance value according to the in-
let air temperature. The lower the inlet air temperature, the
greater the thermistor resistance value, and the higher the inlet
air temperature, the lower the thermistor resistance value (See
Fig. 1).
The inlet air temperature sensor is connected to the ECM. The
5 V power source voltage in the ECM is applied to the inlet air
temperature sensor from terminal THIA via a resistor R. That is
the resistor R and the inlet air temperature sensor are con-
nected in series. When the resistance value of the inlet air tem-
perature sensor changes in accordance with changes in the in-
let air temperature, the potential at the terminal THIA also
changes. Based on this signal, the ECM increases the fuel in-
jection volume to improve the driveability with a cold engine.
DTC No.Proceed toDTC Detection ConditionTrouble Area
P0095Step 1
Open or short in diesel turbo
inlet air temp. sensor circuit
for 0.5 sec.
(1 trip detection logic)
P0097Step 4
Short in diesel turbo inlet air
temp. sensor circuit for 0.5
sec. (1 trip detection logic)Open or short in diesel turbo inlet air temp. sensor circuit
Diesel turbo inlet air temperature sensor
ECM
P0098Step 2
Open in diesel turbo inlet air
temp. sensor circuit for 0.5
sec. (1 trip detection logic)
HINT:
After confirming DTC ºP0095, P0097 or P0098º, use the hand±held tester to confirm the intake air tempera-
ture from the ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / AMBI TEMP SENSº.
Temperature DisplayedMalfunction
±40C (±40Open circuit
140C (284 Short circuit
05CPG±01

Page 677 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76568
I9
Diesel Turbo Inlet Air
Temperature Sensor2
1 GR
E2E1
THIA
R5V
ECM
E13 E13
20
28
BR
05±574
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION P

Page 678 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A75743
Diesel Turbo Inlet Air
Temp. SensorECM
A56868
I9
Wire Harness Side
Diesel Turbo
Inlet Air Temp. Sensor Connector
THIA
E2
A75742
Diesel Turbo Inlet Air
Temp. Sensor
ECM
A80455
THIA
E2
E13
ECM

Page 679 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual A76591
Diesel Turbo Inlet Air
Temp. SensorECM
A75744
Diesel Turbo Inlet Air
Temp. SensorECM
A80456
E13
ECM Connector
THIA
E2
05±576
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM10

Page 680 of 5135

TOYOTA AVENSIS 2005 Service Repair Manual 05±570
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0093FUEL SYSTEM LEAK DETECTED ± LARGE LEAK
HINT:
For more information on the common rail system, see page 05±517.

05±570
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0093FUEL SYSTEM LEAK DETECTED ± LARGE LEAK
HINT:
For more information on the common rail system, see page 05±517.
If P0093 is present, use the diagnostic trouble code matrix for fuel sys\
tem, see page 05±517.
CIRCUIT DESCRIPTION
Refer to description on page 05±517.
DTC No.DTC Detection ConditionTrouble Area
P0093Fuel leaks in high±pressure area.
Fuel line between supply pump and common rail
Fuel line between common rail and injector
Supply pump
Common rail
Injector (P1238 is set simultaneously)
Pressure discharge valve
Open or short in EDU circuit (P0200 is set simultaneously
Open or short in injector circuit (P0200 and P1238 are set
simultaneously)
EDU (P0200 is set simultaneously
ECM
HINT:
After confirming DTC P0093, use the hand±held tester to confirm the fuel rail pressure fro\
m 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
MONITOR DESCRIPTION
P0093 (Fuel leaks in high±pressure area):
This DTC stands for fuel leaks is existing in high±pressure area in the c\
ommon rail system. The ECM
constantly monitors the internal fuel pressure of the common rail after the engine is started, and the ECM
then will set this DTC if the decreasing rate of the internal fuel press\
ure is large when injecting the fuel.
In the common rail system, high±pressure fuel (approx. 30 to 180 MPa (\
306 to 1,835 kgf/cm
2, 4.351 to
26,106 psi)) is always applied to the high±pressure area including the su\
pply pump, common rail, injector
and piping. The ECM adjusts the suction control valve opening angle to obtain the target internal fuel pres-
sure.
If this DTC is present, the ECM enters fail±safe mode and permits drivi\
ng the vehicle for extra 1 minute before
stopping both the fuel injection and supply pump operation, then stops the engine\
. The fail±safe mode will
continue until the ignition switch is turned OFF.
MONITOR STRATEGY
Required sensorsFuel pressure sensor
Frequency of operationContinuous
Duration1 sec.
CHK ENG operation1 driving cycle
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
Engine speed600 rpm±
The monitor will not run if the fuel pressure sensor, or suction control valve circuit, or pressure discharge valve is malfu\
nct ioning
05CPF±01

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