2005 TOYOTA AVENSIS code

−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
05 −449
AVENSIS Supplement (RM 1045E)
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO P 1386)
(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
P1386A
P 1386 and other DTCsB
HINT:
If any other codes besides P 1386 are output, perform troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(See page 05 −299)
A
2 CHECK FAIL −SAFE CONDITION
(a) Check the condition of fail −safe operation while the CHK ENG is being illuminated.
Result:
Condition of Fail −Safe OperationProceed to
Permits driving at vehicle speed of approximately 10 km/h (6
mph) at maximumA
Permits driving at vehicle speed of approximately 80 km/h
(50 mph) at maximumB
No fail −safe operationC
B Go to step 7
C Go to step 4
A
3 READ VALUE OF HAND −HELD TESTER(EXHAUST GAS TEMPERATURE)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON. (Do not start the engine)
(c) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST / ALL / EX TEMP (IN)” and ”DIAGNOSIS / OBD/MOBD / DATA LIST / ALL / EX TEMP (OUT)” and read its value displayed on the hand −held tes-
ter.
Result:
Temperature DisplayedProceed to
OK (Same value as actual exhaust gas temperature)A
1 ,000 ˚C( 1,832 ˚F )B
HINT:
If there is a open circuit, the hand −held tester indicates 1,000 ˚C( 1,832 ˚F).

A81485
Fuel Pressure
Pressure Discharge Valve Operation by Sudden Deceleration:
Pressure Discharge Valve w/o Pressure Discharge Valve
Close
Accelerator Pedal
Opening Angle
Open
Close
Open
w/ Pressure Discharge Valve
Target Fuel Pressure TimeLong Time
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DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −435
AVENSIS Supplement (RM1045E)
DTC P 127 1 FUEL REGULATOR CIRCUIT MALFUNCTION
(EDU DRIVE)
DTC P 1272 FUEL PRESSURE REGULATOR
MALFUNCTION
HINT:
S For more information on the pressure discharge valve and the common rail system, see page 05 −255.
S For more information on the EDU, see page 05 −255.
S If P1271 and/or P1272 is present, refer to the diagnostic trouble codes (DTCs) table for the fuel system
on page 05 −255.
CIRCUIT DESCRIPTION
The ECM controls the internal fuel pressure of the common rail by opening and closing the pressure dis-
charge valve. When sudden deceleration is occurred, the internal fuel pressure will temporarily become
higher than usual and combustion noise may result, therefore the ECM will open the valve temporarily to
discharge the pressure inside the common rail. Also, the pressure discharge valve opens when the ignition
switch is turned to OFF, and the internal pressure is then promptly discharged.
05CQ1 −03

A81513
5V/
Division
20 msec./Division PRDSignal Waveform
A84835
5V/
Division
20 msec./Division INJFSignal Waveform
05−440
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
(a) Reference: Inspection using the oscilloscope.
During idling, the correct waveform is as shown in the dia-
gram on the left.
Inspection PointSpecified Condition
A and BCorrect waveform is as shown
(b) Reference: Inspection using the oscilloscope.
During idling, the correct waveform is as shown in the dia-
gram on the left.
Inspection PointSpecified Condition
C and DCorrect waveform is as shown
INSPECTION PROCEDURE
HINT:
SAfter completing repairs, confirm that P1271 and/or P1272 is not present again.
SIf P0200 and P1271 are present simultaneously, there is open in the INJF wire harness between the
EDU and ECM, or there is open in the wire harness for both injector and pressure discharge valve.
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.
1READ OUTPUT DTC(DTC P1271AND/OR P1272)
(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
P1271 and/or P1272A
P1272B
B Go to step 8
A

A81504
Injector Cross Section Diagram:Piston
Solenoid Valve
Nozzle Needle
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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.

05−406
−
DIAGNOSTICS ECD SYSTEM (1CD −FTV)(From September, 2003)
AVENSIS Supplement (RM 1045E)
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO P0488)
(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
P0488A
P0488 and P0 120, P0 122 and/or P0 123B
HINT:
If any other codes besides P0488 are output, perform troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(See page 05 −299)
A
2 READ OUTPUT DTC(DTC P0488 OUTPUT)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and push the hand −held tester ON.
(c) Select the item ”DIAGNOSIS / OBD/MOBD / DTC INFO / CLEAR CODES”.
(d) Clear the DTCs.
(e) Start the engine and perform quick engine RPM acceleration from idling to 3,000 rpm 3 times.
(f) Select the item ”DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES”.
(g) Read DTCs.
Result:
Display (DTC output)Proceed to
P0488A
No outputB
HINT:
The normal operation of the intake shutter (throttle valve) is as follows.Reference:
ConditionThrottle Position
Quickly accelerate the engine from idling to 3,000 rpmOpening angle varies smoothly
B CHECK FOR INTERMITTENT PROBLEMS (See page 05 −270)
A

A91220
MREL B−W
GR8
3 EFI MAIN Relay
W−BE9 E12
2 IE1
EE1
EFIB−R
(LHD) 1
B5
Battery FL MAINE17
EGR Valve
EGRS 3
1
1
1
1A 1 1
121 2R−L
B−W 10GR
Engine Room R/B No.1ECM
2
1
Engine Room
R/B No. 3 3
3 B
EC B−Y
(RHD)
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−395
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
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.
SAfter engine warm−up, DTC P0400 malfunction is set1second or more passed after quickly accelerat-
ing the engine from idling.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO P0400)
(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
P0400A
P0400 and P0405 and/or P0406B
HINT:
If any other codes besides P0400 are output, perform troubleshooting for those DTCs first.

A81506
From Battery
Glow System Wiring Diagram:
Glow Plug Relay
Glow Plug ECM
GREL
GLOW Fuse
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DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
05 −389
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
S After completing repairs, confirm that P0380 is not present again.
S 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 DTC OUTPUT(IN ADDITION TO DTC P0380)
(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
P0380A
P0380 and P0622B
HINT:
If any other codes besides P0380 and P0622 are output, perform troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(See page 05 −299)
A