TOYOTA AVENSIS 2005 Service Repair Manual

A63955
GND
CH1
(G2)
CH2
(NE+) GND
05±88
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0340CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
The camshaft position sensor (G2 signal) consists of a magnet, iron core \
and pickup coil.
The G2 signal plate has 3 teeth on its outer circumference and is instal\
led on the camshaft timing pulley.
When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil changes,
causing fluctuations in the magnetic field and generating an electromoti\
ve force in the pickup coil.
The NE signal plate (crankshaft timing pulley) has 34 teeth and is instal\
led to the crankshaft. The NE signal
sensor generates 34 signals at every engine revolution. The ECM detects \
the crankshaft angle and the en-
gine revolution based on the NE signals, and the cylinder and the angle of the VVT based on the combination
of the G2 and NE signals.
DTC No.DTC Detecting ConditionTrouble Area
P0340

No camshaft position sensor signal to the ECM during crank-
ing

Open in NE± circuit

Open or short in camshaft position sensor circuit

Camshaft position sensor

Intake camshaft

Timing chain has jumped a tooth

ECM
Reference: Inspection using the oscilloscope.
HINT:
The correct waveform is as shown on the left.
ItemContents
TerminalCH1: G2 ± NE±
CH2: NE+ ± NE±
Equipment Set5V/DIV, 20ms/DIV
ConditionDuring cranking or idling
WIRING DIAGRAM
Refer to DTC P0335 on page05±84.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f  \b \f\f
 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.
05B42±03

A73303
G±G+
Camshaft Position Sensor C1


A66132
G+G±
Camshaft Position Sensor Connector Wire Harness Side
C1
A65743NE± G2
E13
ECM Connector
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±89
AVENSIS REPAIR MANUAL (RM1018E)
1 INSPECT CAMSHAFT POSITION SENSOR(CHECK RESISTANCE)
(a) Measure the resistance between the terminals of the
camshaft posision sensor connector.
Resistance:
1,630 to 2,740  (Cold)
2,065 to 3,225 (Hot)
NOTICE:
ºColdº and ºHotº mean the temperature of the coils them-
selves. ºColdº is from ±10
C (14
F) to 50
C (122
F) and
ºHotº is from 50
C (122
F) to 100
C (212
F).
NG REPLACE CAMSHAFT POSITION SENSOR
OK
2 CHECK HARNESS AND CONNECTOR(ECM ± CAMSHAFT POSITION SENSOR)
(a) Disconnect the camshaft position sensor connector.
(b) Disconnect the E13 ECM connector.
(c) Check for continuity between the wire harness side con-
nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
G+ (C1±1) ± G2 (E13±26)ContinuityG± (C1±2) ± NE± (E13±34)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
G+ (C1±1) or G2+ (E13±26) ± Body groundNo continuityG± (C1±2) or NE± (E13±34) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK SENSOR INSTALLATION
(a) Check the camshaft position sensor installation.
NG TIGHTEN SENSOR
OK

05±90
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
4INSPECT CAMSHAFT
(a)Check the teeth of the signal plate. NGREPAIR OR REPLACE CAMSHAFT
OK
CHECK AND REPLACE ECM (See page 01±32)

A63955
GND CH1
(G2)
CH2
(NE+)GND 05±84
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0335 CRANKSHAFT POSITION SENSOR ºAº
CIRCUIT MALFUNCTION
DTC P1335 CRANKSHAFT POSITION SENSOR CIRCUIT
MALFUNCTION (DURING ENGINE
RUNNING)
CIRCUIT DESCRIPTION
The crankshaft position sensor (NE signal) consists of a magnet, iron core and pick up coil.
The NE signal plate (crankshaft timing pulley) has 34 teeth and is installed to the crankshaft. The NE signal
sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft angle and the en-
gine revolution based on the NE signals, and the cylinder and the angle of the VVT based on the combination
of the G2 and NE signals.
DTC No.DTC Detecting ConditionTrouble Area
P0335

No crankshaft position sensor signal to the ECM during
cranking

Open in NE± circuit
Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crank angle sensor plate

ECM
P1335
If conditions from (a) through (c) are met:
(a) NE greater than 1,000 rpm
(b) NE signal is not detected for over 0.05 sec.
(c) Not during cranking
Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crank angle sensor plate

ECM
Reference: Inspection using the oscilloscope.
HINT:
The correct waveform is as shown on the left.
ItemContents
TerminalCH1: G2 ± NE±
CH2: NE+ ± NE±
Equipment Set5V/DIV, 20ms/DIV
ConditionDuring cranking or idling
05B41±03

A79089
C1
Camshaft Position Sensor(Shielded)
1 2ECM
(Shielded) 1
2
EHR
NE+NE± G2 W
G C6
Crankshaft Position Sensor
R RE13
E13
E1326
34
27
BR E
J12
Junction
ConnectorE E
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±85
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

Read freeze frame data using    
 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.

Perform troubleshooting on ºDTC P0335º first. If no trouble is found, troubleshoot the following me-
chanical system.

A73303
Crankshaft Position Sensor C6


A66132
Wire Harness Side
NE+
NE±
Crankshaft Position Sensor Connector
C6
A65743NE± NE+
E13
ECM Connector
05±86
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
1 INSPECT CRANKSHAFT POSITION SENSOR(CHECK RESISTANCE)
(a) Measure the resistance between the terminals of the
crankshaft posision sensor connector.
Resistance:
985 to 1,600  (Cold)
1,265 to 1,890 (Hot)
NOTICE:
ºColdº and ºHotº mean the temperature of the coils them-
selves. ºColdº is from ±10
C (14
F) to 50
C (122
F) and
ºHotº is from 50
C (122
F) to 100
C (212
F).
NG REPLACE CRANKSHAFT POSITION SENSOR
OK
2 CHECK HARNESS AND CONNECTOR(ECM ± CRANKSHAFT POSITION SENSOR)
(a) Disconnect the crankshaft position sensor connector.
(b) Disconnect the E13 ECM connector.
(c) Check for continuity between the wire harness side con-
nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
NE+ (C6±1) ± NE+ (E13±27)ContinuityNE± (C6±2) ± NE± (E13±34)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
NE+ (C6±1) or NE+ (E13±27) ± Body groundNo continuityNE± (C6±2) or NE± (E13±34) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK SENSOR INSTALLATION
(a) Check the crankshaft position sensor installation .
NG TIGHTEN SENSOR
OK

±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±87
AVENSIS REPAIR MANUAL (RM1018E)
4INSPECT CRANKSHAFT(TEETH OF SIGNAL PLATE)
(a)Remove the oil pump assembly. (See page 17±3)
(b) Check the teeth of the signal plate.
NG REPAIR OR REPLACE CRANKSHAFT
OK
CHECK AND REPLACE ECM (See page 01±32)



A05134
2.2V
A79088
K1
Knock SensorECM
FKN+
E12 (Shielded)
1EB1
11
W
E122
FKN± B
EH J12
J13
Junction
Connector EDEB1 2WB2
BR
BR J12 J13E D
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±81
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0325 KNOCK SENSOR 1 CIRCUIT MALFUNCTION
(BANK 1)
CIRCUIT DESCRIPTION
Knock sensor is fitted on the cylinder block to detect the engine knocking. This sensor contains a piezoelec-
tric element which generates a voltage when it becomes deformed, which occurs when the cylinder block
vibrates due to knocking. If engine knocking occurs, the ignition timing is delayed to suppress it.
DTC No.DTC Detecting ConditionTrouble Area
P0325No knock sensor signal to the ECM with engine speed 3,000
rpm or more
Open or short in knock sensor circuit

Knock sensor (under±torqued or loose)

ECM
HINT:
If the ECM detects the DTC ºP0325º, it enters the fail±safe mode in which the corrective retarded angle value
is set to the maximum value.
Reference:
Inspection using the oscillascope.
(1) Run the engine at 4,000 rpm, check the waveform
between terminal KNKL of the ECM connector and
body ground.
HINT:
The correct waveform is as shown on the left.
(2) Spread the time on the horizontal axis, and confirm
that period of the wave is 80
seconds (Normal
mode vibration frequency of knock sensor: 11.7
kHz).
HINT:
If the vibration frequency in the normal mode is not 11.7 kHz,
the sensor is out of order.
WIRING DIAGRAM
05C6C±01

A65745
E12
ECM ConnectorFKN+
FKN±
A65745
E12
ECM ConnectorFKN+
FKN±
05±82
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using \f \b\f\f
 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 HARNESS AND CONNECTOR
(a)Disconnect the E12 ECM connector.
(b)Check for continuity between the wire harness side con- nectors.
Standard (Check for short):
Symbols (Terminal No.)Specified condition
FKN+ (E12±1) ± FKN± (E12±2)No continuity
OKGo to step 3
NG
2INSPECT KNOCK SENSOR (See page 10±3)
NG REPLACE KNOCK SENSOR
OK
3 CHECK HARNESS AND CONNECTOR(ECM ± KNOCK SENSOR)
(a) Disconnect the E12 ECM connector.
(b) Disconnect the knock sensor connector.
(c) Check for continuity between the wire harness side con- nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
FKN+ (E12±1) ± Knock sensor (K1±2)ContinuityFKN± (E12±2) ± Knock sensor (K1±1)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
FKN+ (E12±1) or Knock sensor (K1±2) ± Body groundNo continuityFKN± (E12±2) or Knock sensor (K1±1) ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

A64029
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±83
AVENSIS REPAIR MANUAL (RM1018E)
4CONFIRM THE MALFUNCTION DISAPPEAR WHEN A GOOD KNOCK SENSOR IS
INSTALLED
(a)Change the knock sensor to a new one.
(1)Remove the knock sensor.
(2)Install a new knock sensor.
Torque: 20 N
m (204 kgf
cm, 15 ft
lbf)
(b)Clear the DTC (See page 05±5).
(c)Perform the driving test.
(d)Read the DTC using the hand±held tester (See page 05±5).
Result:
Display (DTC output)Proceed to
ºP0325º is outputA
ºP0325º is not outputB
BREPLACE KNOCK SENSOR
A
CHECK AND REPLACE ECM(See page 01±32)