2005 TOYOTA AVENSIS fuel pressure

30
20
1 0
5
3
2
1
0.5
0.3
0.2
0. 1
−20 0
20 40 60
80 100
F 1474 1(− 4) ( 104) ( 140) ( 176)
(32) (68) (2 12)
30
20
1 0
0.5
0.3
0.2
0. 1
−20
20 40 60
80 100
F 1474 1(− 4) ( 104) ( 140) ( 176)
(32) (68) (2 12)
A56276
Temperature _ C( _ F)
Resistance k

Acceptable
A79038
E2S PCR2 VC2
VC PC E2
Fuel Pressure Sensor
Component Side:
F16
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
05 −523
AVENSIS Supplement (RM 1045E)
21 INSPECT DIESEL TURBO INLET AIR TENPERATURE SENSOR
(a) Remove the diesel turbo inlet air temperature sensor.
(b) Measure the resistance between the terminals.
Standard:
2.21 to 2.65 k
at 20 _C (68 _F)
(c) Reinstall the diesel turbo inlet air temperature sensor.
NG REPLACE DIESEL TURBO INLET AIR TENPERATURE SENSOR
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
22 INSPECT COMMON RAIL ASSY(FUEL PRESSURE SENSOR)
(a) Disconnect the F 16 fuel pressure sensor connector.
(b) Measure the resistance between each terminal of the fuel
pressure sensor connector.
Standard:
Tester ConnectionSpecified Condition
PC (F 16− 5) − E2 (F 16− 4)16.4 k  or less
PCR2 (F 16− 2) − E2S (F 16− 3)16.4 k  or less
PC (F 16− 5) − VC (F 16− 6)3k  or less
PCR2 (F 16− 2) − VC2 (F 16−1 )3k  or less
(c) Reconnect the fuel pressure sensor connector.
NG REPLACE COMMON RAIL ASSY (FUEL PRES- SURE SENSOR) (See page 11− 67)
OK

A80452
PCR1E
13
ECM Connector
E
12PCR2
E2VCS
E2S
VC
A80453
E2
PCR2
F
16
Wire Harness Side:
Fuel Pressure Sensor Connector
VC2
PCE2S
VC
Front View
05 −524
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
23 CHECK HARNESS AND CONNECTOR(FUEL PRESSURE SENSOR − ECM)
(a) Disconnect the F 16 fuel pressure sensor connector.
(b) Disconnect the E 12 and E 13 ECM connectors.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
PCR1 (E 13− 26) − PC (F 16− 5)
PCR2 (E 13− 33) − PCR2 (F 16− 2)
VCS (E 12− 2) − VC2 (F 16−1 )Below1VC (E 13−1 8)− VC (F 16− 6)Below 1
E2 (E 13− 28) − E2 (F 16− 4)
E2S (E 12−1 )− E2S (F 16− 3)
Standard (Check for short):
Tester ConnectionSpecified Condition
PCR 1 (E 13− 26) or PC (F 16− 5) − Body ground
PCR2 (E 13− 33) or PCR2 (F 16 − 2) − Body ground
VCS (E 12− 2) or VC2 (F 16 −1 )− Body ground10 k  or higherVC (E 13−1 8) or VC (F 16− 6) − Body ground10k  or higher
E2 (E 13− 28) or E2 (F 16− 4) − Body ground
E2S (E 12−1 ) or E2S (F 16− 3) − Body ground
(d) Reconnect the fuel pressure sensor connector.
(e) Reconnect the ECM connectors.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
24 REPLACE ECM (See page 10− 29)
NG REPLACE INJECTION OR SUPPLY PUMP ASSY
(See page 11− 58)
OK
END

05−482
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
DTC P2226 BAROMETRIC PRESSURE CIRCUIT
DTC P2228 BAROMETRIC PRESSURE CIRCUIT LOW
INPUT
DTC P2229 BAROMETRIC PRESSURE CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
To detect atmospheric pressure, the atmospheric pressure sensor built in the ECM is used in the common
rail system. Following the changes in the atmospheric pressure, the ECM corrects the fuel injection volume,
timing and duration, and adjusts the common rail internal fuel pressure for optimizing combustion.
DTC No.DTC Detection ConditionTrouble Area
P2226
P2228
P2229Atmospheric pressure sensor malfunction
(1 trip detection logic)S ECM
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.
REPLACE ECM (See page 10− 29)
05CQ5 −03

A91205
Malfunction Detection:
DPNR Catalyst Regeneration
(Activation of Fuel Addition)
Approximately 300_C (572_F) OFFON
NormalMore than
Approximately 600_C(1,112_F)
Abnormal
Time Exhaust Gas Temperature
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−467
AVENSIS Supplement (RM1045E) DTC No.
DTC Detection ConditionTrouble Area
P2002
Condition (a) or (b) is met (1trip detection logic):
(a) Differential pressure exceeds a standard level for more than
10 seconds
(b) Exhaust gas temperature does not raise during DPNR cata-
lyst regeneration
SDPNR catalytic converter (Manifold converter sub−assy)
SDifferential pressure sensor
SDifferential pressure sensor vacuum hose is clogged
SBlockage in Vacuum transmitting pipe sub−assy
SExhaust gas temperature sensor
SExhaust gas leaks in TOYOTA D−CAT
SMass air flow meter
SECM
MONITOR DESCRIPTION
In order to detect abnormality in the DPNR (*3) catalytic converter, the ECM monitors an exhaust gas temper-
ature as well as a differential pressure of the exhaust gas. For monitoring the differential pressure, the ECM
compares the up−and downstream pressure of the DPNR catalytic converter. If the difference between the
pressure is large, the ECM judges that the DPNR has contaminated or deteriorated, and then illuminates
the CHK ENG.
Furthermore, the ECM monitors increase in the exhaust gas temperature while the exhaust fuel addition in-
jector adds fuel under DPNR catalyst regeneration. The exhaust gas temperature during the DPNR catalyst
regeneration normally rises from approximately 300_C (572_F) to approximately 600_C(1,112_F) or higher.
If the temperature does not rise even if a certain period of time has elapsed, the ECM interprets this as mal-
function of the DPNR and illuminates the CHK ENG.
*3: Diesel Particulate−NOx Reduction system.
INSPECTION PROCEDURE
HINT:
SRead 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.
SIf (exhaust gas) differential pressure (DPNR DIFF PRESS) of the DPNR catalytic converter does not
virtually develop when increasing the engine speed, the DPNR catalytic converter may be malfunction-
ing.

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.

A85355
Exhaust Fuel
Addition Injector
Injector Spray Supply PumpExhaust Gas
Temperature
Sensor (on up stream)
ECM Exhaust
Gas
Exhaust Gas Temperature
Sensor (on down stream)
Exhaust Fuel Addition InjectorA/F Sensor DPNR Catalytic
Converter
Turbocharger
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−445
AVENSIS Supplement (RM1045E)
CIRCUIT DESCRIPTION
The exhaust fuel addition injector is mounted on the exhaust port of the cylinder head, and low pressure is
provided to the injector by the feed pump in the supply pump. This injector adds fuel by a control signal from
the ECM.
This injector is used for two different controls: DPNR catalyst regeneration and nitrogen oxides (NOx) reduc-
tion.
Under the DPNR catalyst regeneration control, the injector adds fuel to raise a catalyst temperature.
In the other control, the injector helps the air−fuel ratio become RICH. As a result, NOx in the exhaust gas
will be reduced in response to the RICH air−fuel ratio.

05−446
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E) DTC No.
DTC Detection ConditionMain Trouble AreaRelated Trouble Area
SExcess or low fuel addition volume from exhaust
fuel addition injector:
When air−fuel ratio deviates from a value estimated
by ECM while the injector adds fuel
(1trip detection logic)SOpen in exhaust temperature
sensor circuit
SA/F sensor
SExhaust gas temperature sensor
SSupply pump assy
SMass air flow meter
SFuelleaksinexhaustfueladdi-
P1386
SLow fuel addition volume from exhaust fuel addition
injector:
When learning value (*3) exceeds standard level
(1trip detection logic)SOpen or short in exhaust fuel
addition injector circuit
SExhaust fuel addition injector
SDPNR catalytic converter (Man-
ifold converter sub−assy)
SFuelleaksinexhaustfueladdi-
tion injector
SMain injector
SCylinder compression pressure
SValve clearance
SValve timing
Airintakesystemhasblockages
SExhaust fuel addition injector nozzle stuck open:
When air−fuel ratio becomes RICHER than standard
level, or exhaust gas temperature reaches higher
than standard level
(1trip detection logic)
SAir intake system has blockages
SAir intake system has leakage
SExhaust system has blockages
SExhaust system has leakage
SEGR system has blockages
SEGR system has leakage
SECM
*3: Correction learning value of the fuel addition volume to raise the DPNR catalyst temperature to a target
range.
HINT:
DTC P2047 (Reductant injector circuit/open [bank1unit1]) will be present if there is an open malfunction in
the exhaust fuel addition injector circuit.

2
1
A80992
E 16
Front View
Wire Harness Side:
Exhaust Fuel Addition
Injector Connector
FIV
A80456
E13
ECM Connector FIV
05
−452
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
NG REPLACE EXHAUST FUEL ADDITION
INJECTOR ASSY (See page 14−1 66)
OK
9 CHECK HARNESS AND CONNECTOR(EXHAUST FUEL ADDITION INJECTOR −
ECM)
(a) Disconnect the E 16 exhaust fuel addition injector connec-
tor.
(b) Disconnect the E 13 ECM connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
FIV (E 13− 3) −(E 16−1 )Below1
E2 (E 13− 28) −(E 16− 2)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
FIV (E 13− 3) or (E 16−1 )− Body ground10k
or higher
(d) Reconnect the exhaust fuel addition injector connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
1 0 CHECK FUEL LEAKAGE(IN EXHAUST FUEL ADDITION INJECTOR)
(a) Visually check if there is no fuel leak between the supply pump and exhaust fuel addition injector.
HINT:
SPrimary pressure of maximum 1MPa ( 10 kgf/cm2, 145 psi) is provided from a feed pump inside the
supply pump to the exhaust fuel addition injector.
SThere is possibility that fuel leaks inside the components (supply pump, etc) have been occurred.
NG REPAIR OR REPLACE
OK