2005 TOYOTA AVENSIS diagram

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.

A81505
Cross Section Diagram of Pressure Discharge Valve:
From Common Rail
(High Pressure)Return to Fuel Tank
(Low Pressure)
Valve
Solenoid
05−436
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
HINT:
The solenoid valve of the pressure discharge valve is the same type that of the injector solenoid valve.
DTC No.DTC Detection conditionTrouble Area
P1271
SOpen or short in pressure discharge valve circuit
There is no valve opening confirmation (IJF) signal from EDU
to ECM despite the ECM sending valve opening command
(PRD) signal after the engine is started
(1 trip detection)SOpen or short in pressure discharge valve circuit
SOpen or short in pressure discharge valve itself
SEDU
SECM
P1272
SPressure discharge valve closed malfunction
Actual pressure decreasing rate deviates from the simulated
pressure decreasing rate after the ignition switch is turned to
OFF
(2 trip detection)SOpen or short in pressure discharge valve circuit (P1271 is
set simultaneously)
SPressure discharge valve
SSupply pump
SECM
HINT:
After confirming DTC P1271 and/or P1272, check the fuel pressure inside the common rail in the ”DIAGNO-
SIS / OBD/MOBD / DATA LIST / ALL / COMN RAIL” using the hand−held tester.
Reference:
Engine SpeedFuel Pressure (MPa)
IdlingApproximately 30 to 40
2,500 rpm (No engine load)Approximately 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
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)

A81504
Injector Cross Section Diagram:Piston
Solenoid Valve
Nozzle Needle
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −43 1
AVENSIS Supplement (RM1045E)
DTC P 1238 INJECTOR MALFUNCTION
HINT:
S For more information on the injector and the common rail system, see page 05 −255.
S If P1238 is present, refer to the diagnostic trouble codes (DTCs) table for the fuel system on page
05 −255.
CIRCUIT DESCRIPTION
The ECM detects combustion deterioration for a specific cylin-
der.
HINT:
SThe cylinder, which has compensation value for INJ VOL
that varies from other cylinders, may be malfunctioning.
SIf DTC P0093 (Fuel leaks in high −pressure area) is pres-
ent simultaneously, leakage malfunction of the cylinder
probably be occurred.
SIf DTC P0200 (Open or short in EDU or injector circuit) is
present simultaneously, there probably be faulty circuit lo-
cated between the ECM and the injector including the
EDU.
SIf only DTC P1238 (Injector malfunction) is present, prob-
ably injector mechanical malfunction or insufficient com-
pression (valve clearance etc) has occurred, not an open
or short malfunction of the ECM, EDU and injector circuit.
SSolenoid valve of the injector is the same type that of the
pressure discharge valve.
DTC No.DTC Detection ConditionMain Trouble AreaRelated Trouble Area
P1238Engine speed fluctuation is large when idling
(2 trip detection logic)
S Injector
S EDU (P0200 is set simultaneous-
ly)
S Open or short in engine wire har-
ness (P0200 is set simultaneous-
ly)
S Connector connection (P0200 is
set simultaneously)
S Compression pressure
S Valve clearance
SValve timing
S ECM
HINT:
After confirming DTC P1238, check the internal fuel pressure in ”DIAGNOSIS / OBD/MOBD / DATA LIST
/ ALL / COMN RAIL” using the hand −held tester.
Reference:
Engine SpeedFuel Pressure (MPa)
IdlingApproximately 30 to 40
2,500 rpm (No engine load)Approximately 50 to 100
05CQ0 −05

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

A81009
STP E10 G−W
6
4B−RDriver
Side J/B
1
ED1 21
1
2 AM2
ALT B
2IR1
B−L15
B
BatteryDriver
Side J/B Engine Room
R/B No. 3
FL MAIN 3
STOP 1
11A
3
3
W Engine Room
R/B No.1
22 DA
1 DN 11IE3
R−W
(LHD)R−W
(LHD)
R−W
(RHD)R−W
(RHD)
3IR1
B−W
(RHD)B−W
(RHD)
20 IE1
B−W
(LHD)B−W
(LHD) 3 24 1
S13
Stop Lamp Switch
B−W B−W
C J9 (LHD)
E J27 (RHD)
J/C
C J8 (LHD)
A
J26 (RHD) Driver
Side J/BIGN I13
Ignition Switch
AM2 IG2
B−R
B−R(LHD)
(RHD) 1IE4
1IP1
18 DA2 DHECM
ST1− E10 14 DA2
DC10
1IR1 6 IE3
G−W
(LHD)G−W
(LHD)
G−W
(RHD)G−W
(RHD)
4IR1
G−W
(RHD)G−W
(RHD)
14 IE2
G−W
(LHD)G−W
(LHD) 05−412
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
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.