2005 TOYOTA AVENSIS sensor

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±329
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0016CRANKSHAFT POSITION ±CAMSHAFT
POSITION CORRELATION (BANK 1 SENSOR
A)
CIRCUIT DESCRIPTION
Refer to DTC P0335 on page 05±433.
DTC No.DTC Detection ConditionTrouble Area
P0016Deviation in crankshaft position sensor signal and camshaft
position sensor (bank 1) signal (2 trip detection logic)
Mechanical system
(Timing chain has jumped a tooth, chain stretched)

ECM
WIRING DIAGRAM
Refer to DTC P0335 on page 05±433.
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, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK VALVE TIMING (See page 14±186)
(a) Check for loose and jumping teeth of timing chain.
NGADJUST VALVE TIMING (See page 14±186) (REPAIR OR REPLACE TIMING CHAIN)
OK
CHECK AND REPLACE ECM (See page 01±32)
05CE0±01

A71007
Air Flow Meter Crankshaft Position Sensor
Actual Valve TimingCorrection Target Valve Timing
Feedback
Duty Control ECM
Camshaft Timing
Oil Control
Valve (OCV)
Vehicle Speed Signal Engine Coolant Temp. SensorThrottle Position Sensor
Camshaft Position Sensor
05±322
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0010 CAMSHAFT POSITION ºAº ACTUATOR
CIRCUIT (BANK 1)
HINT:
This is the procedure of oil control valve (OCV).
CIRCUIT DESCRIPTION
The VVT system controls the intake camshaft to provide the optimal valve timing for every driving condition. This control
is performed based on the signals, such conditions as intake air volume, throttle position and engine coolant tempera-
ture.
The ECM controls the oil control valve (OCV), based on the signals output from the sensors. The VVT controller regu-
lates the intake camshaft angle using oil pressure through the OCV. As result, the relative position between the camshaft
and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions de-
crease under overall driving conditions. Also, the ECM detects the actual valve timing using the signals from the cam-
shaft position sensor and the crankshaft position sensor, and performs feedback control. This is how target valve timing
is achieved by the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0010Open or short in OCV circuit

Open or short in OCV circuit

OCV

ECM
05CDY±01

05CDX±01
05±320
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
When the malfunction is not confirmed in the DTC check and the problem still\
can not be confirmed in the
basic inspection either, proceed to this problem symptoms table and troubleshoot according to the number
given below.
SymptomSuspected AreaSee page
Engine does not crank (Does not start)
2. Starter
3. Starter relay
4. Park/neutral position switch19±10
19±10 40±8
No initial combustion (Does not start)
1. ECM power source circuit
2. Ignition coil assy
3. Fuel pump control circuit
4. Injector circuit05±502
05±439
05±507
05±415
No complete combustion (Does not start)
1. Ignition coil assy
2. Fuel pump control circuit
3. Injector circuit05±439
05±507
05±415
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. Ignition coil assy
3. Spark plug
4. Compression
5. Injector circuit
6. Fuel pump control circuit05±513
05±43918±14
14±181
05±415
05±507
Cold engine (Difficult to start)
1. Starter signal circuit
2. Injector circuit
3. Ignition coil assy
4. Spark plug
5. Fuel pump control circuit05±513
05±415
05±439 18±14
05±507
Hot engine (Difficult to start)
1. Starter signal circuit
2. Injector circuit
3. Ignition coil assy
4. Spark plug
5. Fuel pump control circuit05±513
05±415
05±439
18±14
05±507
High engine idle speed (Poor idling)
1. ECM power source circuit
2. Park/neutral position switch
3. Back up power source circuit05±502
40±8
05±467
Low engine idle speed (Poor idling)
1. Park/neutral position switch
2. Injector circuit
3. Back up power source circuit
4. Fuel pump control circuit40±8
05±415
05±467
05±507
Rough idling (Poor idling)
1. Mass air flow meter circuit
2. Vacuum sensor circuit
3. Injector circuit
4. Fuel pump control circuit
5. Ignition coil assy
6. Compression
7. Back up power source circuit05±336
05±342
05±415
05±507
05±439
14±181
05±467
Hunting (Poor idling)
1. Mass air flow meter circuit
2. Vacuum sensor circuit
3. ECM power source circuit05±336
05±342
05±502
Hesitation/Poor acceleration (Poor driveability)
1. Mass air flow meter circuit
2. Vacuum sensor circuit
3. Injector circuit
4. Ignition coil assy
5. Fuel pump control circuit05±336
05±342
05±415
05±439
05±507
Muffler explosion after fire (Poor driveability)
1. Ignition coil assy
2. Spark plug
3. Injector circuit05±439 18±14
05±415

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±321
AVENSIS REPAIR MANUAL (RM1018E) Symptom
See page
Suspected Area
Surging (Poor driveability)1. Spark plug
2. Injector circuit18±14
05±415
Engine stall (Soon after starting)1. Mass air flow meter circuit
2. Vacuum sensor circuit05±336
05±342
Engine stall (After accelerator pedal depressed)1. Mass air flow meter circuit
2. Vacuum sensor circuit05±336
05±342
Engine stall (After accelerator pedal released)
1. Mass air flow meter circuit
2. Vacuum sensor circuit
3. ECM05±336
05±342 01±32
Engine stall (During A/C operation)1. A/C signal circuit (Compressor circuit)
2. ECM05±1100 01±32
Engine stall (When shifting N to D)1. Park/neutral position switch40±8

A76903
NE+ G2+
NE±ECM ConnectorE11
A59781
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±433
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0335 CRANKSHAFT POSITION SENSOR ºAº
CIRCUIT
DTC P0339 CRANKSHAFT POSITION SENSOR ºAº
CIRCUIT INTERMITTENT
CIRCUIT DESCRIPTION
The crankshaft position sensor (NE signal) consists of a magnet, iron core and pick up coil.
The NE signal plate (crankshaft position sensor plate No. 1) has 34 teeth and is installed on the crankshaft.
The NE signal sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft
angle and the engine revolution based on the NE signal, and the cylinder and the angle of the VVT based
on the combination of the G2 and NE signal.
DTC No.DTC Detection ConditionTrouble Area
P0335
No crankshaft position sensor (NE) signal to ECM during
cranking for 3 sec. or more (2 trip detection logic).
P0335No crankshaft position sensor (NE) signal to ECM with engine
speed 600 rpm or more (2 trip detection logic).
Open or short in crankshaft position sensor circuit
P0339
In condition (a), (b) and (c), when no crankshaft position sen-
sor (NE) signal is input for 0.05 sec. or more
(1 trip detection logic):
(a) Engine revolution 1,000 rpm or more
(b) STA signal is OFF
(c) 3 sec. or more has been lapsed after STA signal is switched
from ON to OFF.
Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Signal plate (crankshaft position sensor plate No. 1)

ECM
Reference: Inspection using the oscilloscope.
(1) During cranking or idling, check the waveform be-
tween the terminals of the ECM connector.
ItemDetails
TerminalCH1: G2+ ± NE±
CH2: NE+ ± NE±
Equipment Setting5 V/Division, 20 ms/Division
ConditionDuring Cranking or idling
HINT:
The correct waveforms are as shown in the left.
05CKJ±01

A76874
C1
Camshaft Position Sensor
C6
Crankshaft Position SensorR W
2 1
EE BR
G J12
J/CE1127ECM
G2+
NE+
NE± (Shielded)
R
BRE11
E1125
24
2 1
(Shielded)E E
E
R R
Crankshaft
Position
Sensor
Plate No. 1Camshaft
Timing
Pulley LH
A64984Crankshaft Position Sensor Component Side
C6
05±434
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

Perform troubleshooting of DTC P0335 first. If no trouble is found, troubleshoot the engine mechanical
system.

Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ratio was lean or rich, etc. at
the time of the malfunction.
1 INSPECT CRANKSHAFT POSITION SENSOR(RESISTANCE)
(a) Disconnect the C6 crankshaft position sensor connector.
(b) Measure the resistance between the terminals of the
crankshaft position sensor.
Resistance:
985 to 1,600 at cold
1,265 to 1,890 at hot
NOTICE:
ºColdº and ºHotº shown above mean the temperature of
the coils themselves. ºColdº is from ±10C (14F) to 50C
(122F) and ºHotº is from 50C (122F) to 100C (212F).
NG REPLACE CRANKSHAFT POSITION SENSOR
OK


NE+NE±
A52871
Crankshaft Position Sensor Connector
Wire Harness Side
C6
A81698
NE+ NE±
ECM Connector E11
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±435
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK HARNESS AND CONNECTOR(ECM ± CRANKSHAFT POSITION SENSOR)
(a)Disconnect the C6 crankshaft position sensor connector.
(b)Disconnect the E11 ECM connector.
(c)Check for continuity between the wire harness side con-
nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
Crankshaft position sensor (C6±1) ± NE+ (E11±25)ContinuityCrankshaft position sensor (C6±2) ± NE± (E11±24)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
Crankshaft position sensor (C6±1)or NE+ (E11±25)
± Body ground
NocontinuityCrankshaft position sensor (C6±2)or NE± (E11±24) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS ORCONNECTOR
OK
3CHECK SENSOR INSTALLATION(CRANKSHAFT POSITION SENSOR)
(a)Check the crankshaft position sensor installation. NGTIGHTEN SENSOR
OK
4INSPECT CRANKSHAFT POSITION SENSOR PLATE NO.1(TEETH OF SIGNAL PLATE)
(a)Remove the crankshaft position sensor plate No. 1 (See page 14±222).
(b)Check the teeth of the signal plate.
NGREPLACE CRANKSHAFT POSITION SENSORPLATE NO.1
OK
CHECK AND REPLACE ECM (See page 01±32)

A83343
KNK Signal Waveform
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±429
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0325 KNOCK SENSOR 1 CIRCUIT (BANK 1 OR
SINGLE SENSOR)
DTC P0327 KNOCK SENSOR 1 CIRCUIT LOW INPUT
(BANK 1 OR SINGLE SENSOR)
DTC P0328 KNOCK SENSOR 1 CIRCUIT HIGH INPUT
(BANK 1 OR SINGLE SENSOR)
CIRCUIT DESCRIPTION
A flat type knock sensor (non±resonant type) has a structure that can detect vibrations in a wide frequency
range, from about 6 kHz to 15 kHz, and has the following features.
Knock sensor is fitted on the cylinder block to detect the engine knocking.
The knock sensor contains a piezoelectric element which generates a voltage when it becomes deformed.
This occurs when the cylinder block vibrates due to knocking. If engine knocking occurs, the ignition timing
is retarded to suppress it.
DTC No.DTC Detection ConditionTrouble Area
P0325Output voltage of the knock sensor decreases beyond a
threshold. (Threshold varies according to an engine speed.)
Knock sensor

Knock sensor (under±torqued or loose)

ECM
P0327Output voltage of the knock sensor is 0.5 V or less.

Short in knock sensor circuit

Knock sensor

ECM
P0328Output voltage of the knock sensor is 4.5 V or more.

Open in knock sensor circuit

Knock sensor

ECM
HINT:
If the ECM detects above diagnosis conditions, it operates the fail safe function in which the corrective retard
angle value is set to the maximum value.
Reference:
The correct waveform is shown in the diagram on the left.
ItemDetails
TerminalKNK1 ± EKNK
Equipment Settings0.01 to 10 V/ Division,
0.01 to 10 msec./ Division
ConditionAfter warming up the engine,
keep the engine speed at 4,000 rpm.
05CKI±01