2005 TOYOTA AVENSIS Circuit

A59781
05−160
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P0335 CRANKSHAFT POSITION SENSOR ”A”
CIRCUIT
DTC P0339 CRANKSHAFT POSITION SENSOR ”A”
CIRCUIT INTERMITTENT
CIRCUIT DESCRIPTION
The crankshaft position sensor system consists of a crankshaft position sensor plate and a pick−up coil.
The sensor plate has 34 teeth and is installed on the crankshaft. The pick−up coil is made of an iron core
and magnet. The sensor plate rotates and as each tooth passes through the pick−up coil, a pulse signal is
created. The pick−up coil generates 34 signals for each engine revolution. Based on these signals, the ECM
calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and igni-
tion timing are controlled.
DTC No.DTC Detection ConditionTrouble Area
P0335
(1) No crankshaft position sensor (NE) signal to ECM during
cranking for 3 seconds or more (2 trip detection logic)
(2) No crankshaft position sensor (NE) signal to ECM at engine
speed of 600 rpm or more (2 trip detection logic)SOpen or short in crankshaft position sensor circuit
SCrankshaft position sensor
SSignal plate (crankshaft position sensor plate No. 1)
SECM
P0339
No crankshaft position sensor signal to ECM for 0.05 second
or more, and conditions (a), (b) and (c) are met
(1 trip detection logic):
(a) Engine speed is 1,000 rpm or more
(b) STA signal is OFF
(c) 3 seconds or more has been lapsed after STA signal is
switched from ON to OFF
SOpen or short in crankshaft position sensor circuit
SCrankshaft position sensor
SSignal plate (crankshaft position sensor plate No. 1)
SECM
Reference: Inspection using the oscilloscope.
HINT:
The correct waveforms are as shown on the left.
ItemDetails
TerminalCH1: G2+−NE−
CH2: NE+−NE−
Equipment Setting5 V/Division, 20 ms/Division
ConditionDuring Cranking or idling
05HIJ−01

A83343
KNK Signal Waveform 05−156
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P0325 KNOCK SENSOR1CIRCUIT (BANK1OR
SINGLE SENSOR)
DTC P0327 KNOCK SENSOR1CIRCUIT LOW INPUT
(BANK1OR SINGLE SENSOR)
DTC P0328 KNOCK SENSOR1CIRCUIT HIGH INPUT
(BANK1OR SINGLE SENSOR)
CIRCUIT DESCRIPTION
The flat type engine knock sensor (non−resonant type) has a structure that can detect vibration in a wide
frequency range, from about 6 kHz to15 kHz.
The sensor, located on the cylinder block, detects spark knock. When ”spark knock” occurs, the knock sen-
sor picks−up vibrates in a specific frequency range. When the ECM detects signal voltage in this frequency
range, it retards the ignition timing to suppress knocking. The ECM also senses background engine noise
with the knock sensor and uses this noise to check for faults in the sensor.
DTC No.DTC Detection ConditionTrouble Area
P0325Output voltage of the knock sensor decreases below a thresh-
old value (Threshold varies according to engine speeds)SKnock sensor
SKnock sensor (under−torqued or loose)
SECM
P0327Output voltage of the knock sensor is 0.5 V or less
SShort in knock sensor circuit
SKnock sensor
SECM
P0328Output voltage of the knock sensor is 4.5 V or more
SOpen in knock sensor circuit
SKnock sensor
SECM
HINT:
If the ECM detects any one of above conditions, it operates the fail−safe function in which the corrective
retard angle value is set to the maximum value.
Reference: Inspection using the oscilloscope.
HINT:
The correct waveform is as shown on the left.
ItemDetails
TerminalKNK1−EKNK
Equipment Settings0.01to10 V/ Division,
0.01to10 msec./ Division
ConditionAfter warming up the engine,
keep the engine speed at 4,000 rpm.
05CKI−02

05−146
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P0300 RANDOM/MULTIPLE CYLINDER MISFIRE
DETECTED
DTC P0301CYLINDER1MISFIRE DETECTED
DTC P0302 CYLINDER 2 MISFIRE DETECTED
DTC P0303 CYLINDER 3 MISFIRE DETECTED
DTC P0304 CYLINDER 4 MISFIRE DETECTED
CIRCUIT DESCRIPTION
When a misfire occurs in the engine, hydrocarbons (HC) enter the exhaust in high concentrations. If this HC
concentration is high enough, there could be an increase in exhaust emissions levels. High concentrations
of HC can also cause to temperature of the catalyst to increase, possibly damaging the catalyst. To prevent
this increase in emissions and limit the possibility of thermal damage, the ECM monitors the misfire rate.
When the temperature of the catalyst reaches a point of thermal degradation, the ECM will blink the CHK
ENG. For monitoring misfire, the ECM uses both the camshaft position sensor and the crankshaft position
sensor. The camshaft position sensor is used to identify misfiring cylinders and the crankshaft position sen-
sor is used to measure variations in the crankshaft rotation speed. The misfire counter increments when
crankshaft rotation speed variations exceed threshold values.
If the misfiring rate exceeds the threshold value and could cause emissions deterioration, the ECM illumi-
nates the CHK ENG.
HINT:
SFor any particular 200 revolutions of the engine, misfiring which would result in overheating of catalyst
is detected. This cause CHK ENG to blink (1trip detection logic).
SFor any particular1,000 revolutions of the engine, misfiring which would result in a deterioration of
emissions is detected. This illuminates CHK ENG (2 trip detection logic).
05HII−01

05−136
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P0200 INJECTOR CIRCUIT / OPEN
DTC P0201INJECTOR CIRCUIT / OPEN−(CYLINDER1)
DTC P0202 INJECTOR CIRCUIT / OPEN−(CYLINDER 2)
DTC P0203 INJECTOR CIRCUIT / OPEN−(CYLINDER 3)
DTC P0204 INJECTOR CIRCUIT / OPEN−(CYLINDER 4)
CIRCUIT DESCRIPTION
The Electronic Driver Unit (EDU) has been adopted to operate the injector at high speed. The EDU enables
the injector to drive in high−speed rate under high−pressure fuel condition using its internal DC/DC converter
that provides high voltage and quick−charging system.
The ECM constantly monitors the EDU. If the ECM detects abnormal condition, it will stop the engine.
DTC No.DTC Detection ConditionTrouble Area
P0200No IJF signals to ECM despite crankshaft rotating10 times
(1trip detection logic)
SOpen or short in EDU circuit
SEDU (Injector driver)
SFuel injector assy
SECM
P0200No IJF signals to ECM despite crankshaft rotating 20 times
during cranking (2 trip detection logic)
SOpen or short in EDU circuit
SEDU (Injector driver)
SFuel injector assy
SECM
P0201
P0202
P0203
P0204
No IJF signals of each cylinder to ECM 20 times successively
(1trip detection logic)
SOpen or short in EDU circuit
SEDU (Injector driver)
SFuel injector assy
SECM
05CKG−02

A76902
E4EDU Connector Wire Harness Side:
GND (−) VB (+)
Front View
A76902
E4
Wire Harness Side:
INJ#2 COM1 INJ#3 INJ#4 INJ#1COM2
EDU Connector
Front View
05−138
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
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.
1INSPECT INJECTOR DRIVER(POWER SOURCE OF EDU)
(a) Disconnect the E4 EDU connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage between the specified terminals of
the EDU connector.
Standard:
Tester ConnectionSpecified Condition
VB (E4−8)−GND (E4−7)9to14V
(d) Reconnect the EDU connector.
NG CHECK EDU POWER SOURCE CIRCUIT
OK
2 CHECK HARNESS AND CONNECTOR(EDU−FUEL INJECTOR)
(a) Disconnect the E4 EDU connector.
(b) Measure the resistance between the specified terminals
of the EDU connector.
Standard:
Tester ConnectionSpecified Condition
INJ#1(E4−4)−COM1(E4−5)2.55 to 2.85
at 20_C (68_F)
INJ#2 (E4−1)−COM2 (E4−6)2.55 to 2.85
at 20_C (68_F)
INJ#3 (E4−2)−COM2 (E4−6)2.55 to 2.85
at 20_C (68_F)
INJ#4 (E4−3)−COM1(E4−5)2.55 to 2.85
at 20_C (68_F)
(c) Reconnect the EDU connector.
NG Go to step 6
OK

A14687
(V)
4.5
0.5
(0)019.6
(200)MPa
(kgf/cm2)
Output Voltage
Fuel Pressure
A00309
F16
Fuel Pressure Sensor
18
E13ECM
5V
E1 1R−W
23
Y−G 2
3
BR28
E2 PRVC
VOUT
GNDE13
E13 VCC
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−127
AVENSIS Supplement (RM1045E)
DTC P0190 FUEL RAIL PRESSURE SENSOR CIRCUIT
CIRCUIT DESCRIPTION
The fuel pressure sensor is installed on a fuel delivery pipe and
detects the fuel pressure. It controls of feedback the pump dis-
charge in order to keep the fuel at target pressure 8 to 13 MPa
(81.6 to 132.6 kgf/cm
2, 1,160 to 1,885 psi) by the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0190Open or short in fuel pressure sensor circuit
SOpen or short in fuel pressure sensor circuit
SFuel pressure sensor
SECM
HINT:
After confirming DTC P0190, use the hand−held tester to confirm the fuel pressure in the delivery pipe in
DIAGNOSIS / OBD/MOBD / DATA LIST / ALL.
Fuel Pressure (MPa)Malfunction
Approximately 0SPR circuit short
19.6 or more
SVC circuit open or short
SPR circuit open
SE2 circuit open
WIRING DIAGRAM
05CKE−02

A59674
F16
VCC (+)GND (−)
Fuel Pressure Sensor Connector
Wire Harness Side:
VOUT
Front View
05
−1 28
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
S If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
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 READ VALUE OF HAND −HELD TESTER(FUEL PRESSURE)
(a) Connect the hand −held tester to the DLC3.
(b) Start the engine.
(c) Turn the hand −held tester ON.
(d) On the hand −held tester, select the item: DIAGNOSIS / OBD/MOBD / DATA LIST / ALL / FUEL PRESS.
Read the values.
Pressure: 8 to 13 MPa (8 1.6 to 132.6 kgf/cm
2 , 1,1 60 to 1,885 psi)
Result:
Fuel Pressure (MPa)Proceed to
19.6 or moreA
0.0B
OK (8 to 13 MPa (81.6 to 132.6 kgf/cm 2, 1,160 to 1,885 psi)) (*1)C
*1: The value must be changed when the engine is run or stopped.
B Go to step 3
C CHECK FOR INTERMITTENT PROBLEMS(See Page 05 −7)
A
2 INSPECT FUEL PRESSURE SENSOR(VCC VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the specified terminals of the F16 fuel pressure sensor connector.
Standard:
Tester ConnectionSpecified Condition
VCC (F16 −1) −GND (F16 −3)4.5 to 5.5 V
NG Go to step 4
OK

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 09
AVENSIS Supplement (RM 1045E)
DTC P0 136 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 1 SENSOR 2)
DTC P0 156 OXYGEN SENSOR CIRCUIT MALFUNCTION
(BANK 2 SENSOR 2)
CIRCUIT DESCRIPTION
Refer to DTC P0 130 on page 05 −82.
DTC NoDTC Detection ConditionTrouble Area
P0 136
P0 156
If the following two conditions are satisfied at a time
(2 trip detection logic):
(a) The ECM records cycles which the vehicle runs and stops
8 times or more
(b) There was no change in the rich and lean output from
heated oxygen sensor (sensor 2) for the 360 seconds un-
der air −fuel ratio feedback control (Throttle was not closed)
S Open or short in heated oxygen sensor circuit
S Heated oxygen sensor (Bank 1, 2 Sensor 2)
S Heated oxygen sensor heater (Bank 1, 2 Sensor 2)
S EFI relay
HINT:
S Bank 1 refers to the No. 1 and No. 4 cylinders.
S Bank 2 refers to the No. 2 and No. 3 cylinders.
S Sensor 2 refers to the sensor farthest away from the engine assembly.
WIRING DIAGRAM
Refer to DTC P0 130 on page 05 −82.
05CKC −02