2005 TOYOTA AVENSIS sensor

05−438
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
P1272:
Required sensorsFuel pressure sensor
Frequency of operationOnce per driving cycle
Duration1 second
CHK ENG operation2 driving cycles
TYPICAL ENABLING CONDITIONS
P1271:
Specification
Drive the vehicle at 50 km/h (31 mph) with the 3rd gear and then decelerate it by completely releasing the accelerator pedal
P1272:
ItemSpecificationItemMinimumMaximum
Fuel pressure30 MPa (306 kgf/cm2, 4,351 psi)−
Fuel temperature0_C (32_F)−
Battery voltage11 V−
The monitor will not run if the fuel pressure sensor, pressure discharge valve circuit, or fuel temperature sensor is malfunctioning
TYPICAL MALFUNCTION THRESHOLDS
P1271:
Threshold
If the confirmation signals from the EDU is not present, despite the ECM sending the command signals regularly during decelerating
P1272:
Threshold
If the internal pressure stays beyond the specified level after the ignition switch was turned to OFF

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.

A81017
Generator (Alternator)Glow Plug
ECM
Glow
Plug
Relay
Battery
Duty Ratio
05
−426
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0622 GENERATOR FIELD ”F” TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
While the generator (alternator) is generating current, a duty ratio is sent from terminal M of the generator
to the ECM terminal ALT. This duty ratio is used for detecting an open malfunction of the generator circuit
and DTC P0380.
HINT:
DTC P0380 is prepared for indicating an open or short malfunction in the glow plug circuit. If this DTC is de-
tected, inspect the glow plug circuit. (See page 05 −386)
DTC No.DTC Detection ConditionTrouble Area
P0622
No duty ratio from terminal M of the generator (alternator) at
the engine running
(1 trip detection logic)SOpen in generator (alternator) circuit
S Generator (alternator)
S Drive belt
S ECM
HINT:
After confirming DTC P0622, check the internal fuel pressure of the common rail in the ”DIAGNOSIS / OBD/
MOBD / DATA LIST / ALL / GENERATOR” using the hand −held tester.
Result:
Engine SpeedGenerator Duty Ratio (%)
Idling10 to 100
When increasing engine speedGenerator duty ratio drops
When decreasing engine speedGenerator duty ratio rises
MONITOR DESCRIPTION
The ECM will detect a generator (alternator) failure or an open malfunction of the circuit, if the duty ratio is
not output from terminal M of the generator (alternator) despite running the engine.
MONITOR STRATEGY
Required SensorsGenerator (alternator) circuit
Frequency of operationContinuous
Duration10 seconds
CHK ENG Operation1 driving cycle
TYPICAL ENABLING CONDITIONS
ItemSpecificationItemMinimumMaximum
Battery voltage11 V−
Engine speed700 rpm2,000 rpm
05DW0 −02

A79413
From
Speed SensorSkid
Control
ECU4−Pulse
Combination
Meter4−Pulse
ECM 05−408
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
DTC P0500 VEHICLE SPEED SENSOR ”A”
CIRCUIT DESCRIPTION
The speed sensor for skid control ECU detects the wheel speed and sends the appropriate signals to the
skid control ECU.
The skid control ECU converts these signals into a 4−pulse signal and outputs it to the combination meter.
After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit in-
side the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based
on the frequency of these pulse signals.
DTC No.DTC Detection ConditionTrouble Area
P0500
Conditions (a), (b) and (c) continue for 7 seconds or more:
(2 trip detection logic)
(a) Engine coolant temperature is more than 70_C (158_F)
(b) Engine speed is between 2,000 and 3,500 rpm
(c) Speed signal is not entering to ECMSOpen or short in speed sensor circuit
SSpeed sensor
SCombination meter
SECM
SSkid control ECU
05B5L−07

A81008
ECM
E1017
V−W C11
Combination
Meter Assy
(RHD) V−W 18
J20HJ/C
SPD
(RHD)J20H
(LHD)J10H
(LHD)J10H
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−409
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.
1CHECK OPERATION OF SPEEDOMETER
(a) Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG CHECK SPEEDOMETER CIRCUIT (INCLUDE
SPEED SENSOR)
OK

− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−403
AVENSIS Supplement (RM1045E)
DTC P0488 EXHAUST GAS RECIRCULATION
THROTTLE POSITION CONTROL
RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
The ECM opens and closes the intake shutter valve (throttle valve) using the rotary solenoid type actuator.
Upon opening and closing the valve, the exhaust gas recirculation volume is properly controlled. Also, en-
gine vibration and noise will be reduced by closing the valve when the engine is stopped.
DTC No.DTC Detection ConditionTrouble Area
P0488
Duty ratio during valve movement control stuck in its maximum
or minimum value for more than1second
(1trip detection logic)
SIntake shutter stuck
SIntake shutter does not move smoothly
SOpen or short in intake shutter circuit
SOpen or short in intake shutter position sensor circuit
SIntake shutter position sensor (built in intake shutter valve)
SECM
HINT:
After confirming DTC P0488, check the intake shutter position in the ”DIAGNOSIS / OBD/MOBD / DATA LIST
/ ALL / THROTTLE POS” using the hand−held tester.
Reference:
ConditionIntake Shutter (Throttle Valve) Position
Quickly accelerate the engine from idling to 3,000 rpmOpening angle varies smoothly
05I7P−01

A91223
Output Voltage (V)0.1
0 4.0
2.1Detect P0406
Detect P0405 4.95.0
EGR Valve Opening Angle (%)0
100 Property of Output Voltage:
− DIAGNOSTICSECD SYSTEM (1CD−FTV)(From September, 2003)
05−399
AVENSIS Supplement (RM1045E)
DTC P0405 EXHAUST GAS RECIRCULATION SENSOR
”A” CIRCUIT LOW
DTC P0406 EXHAUST GAS RECIRCULATION SENSOR
”A” CIRCUIT HIGH
CIRCUIT DESCRIPTION
The EGR valve position sensor is mounted on the EGR valve and used for detecting the lift amount of the
valve. The lift amount detected by the sensor is provided to the ECM as feedback, the ECM then regulates
the lift amount of the valve in accordance with engine running condition.
DTC No.DTC Detection ConditionTrouble Area
P0405
EGR valve position sensor output voltage is less than 0.1 V for
more than 0.5 second
(1 trip detection logic)
SOpen or short in EGR valve position sensor circuit
SEGRvalvepositionsensor
P0406EGR valve position sensor output voltage is more than 4.9 V for
more than 0.5 second
(1 trip detection logic)SEGRvalve position sensor
SECM
HINT:
After confirming DTC P0405 and P0406, check the EGR valve opening angle condition in the ”DIAGNOSIS
/ OBD/MOBD / DATA LIST / ALL / EGR VALVE POS” using the hand−held tester.
ResultConditionIgnition switch ON (Engine is stop)Idling after warmed upCondition
Changes between 2.1 V and 4.0 VNormal
Less than 0.1 VP0405 (Low input voltage)
More than 4.9 VP0406 (High input voltage)
MONITOR DESCRIPTION
When output voltage of the EGR valve position sensor deviates
from the normal operating range (between 0.1 V and 4.9 V) for
more than 0.5 second, the ECM interprets this as malfunction
of the sensor circuit, and illuminates the CHK ENG.
05I7O−01

A12544
VCECM
EGLS
E2
R
R
−W
BR
E18
EGR Valve Position Sensor
1
3
2 18
E13
33
E12
28
E13
VC
E2
EGLS 5V
E1
A85350
E18
Front View
Wire Harness Side:
EGR valve position Sensor Connector
12 3
VC E2 EGLS
05 −400
−
DIAGNOSTICS ECD SYSTEM (1CD−FTV)(From September, 2003)
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
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 HARNESS AND CONNECTOR(EGR VALVE POSITION SENSOR VOLTAGE)
(a) Disconnect the E18 EGR valve position sensor connec-
tor.
(b) Measure the voltage between the specified terminals of
the E18 EGR valve position sensor connector.
Standard:
Tester ConnectionSpecified Condition
VC (E18 −1) − E2 (E18 −2)4.5 to 5.5 V
(c) Reconnect the EGR valve position sensor connector.
NG Go to step 4
OK
2 INSPECT EGR VALVE POSITION SENSOR(RESISTANCE) (See page 12− 9)
NG REPLACE EGR VALVE POSITION SENSOR
(See page 14−1 08)
OK