2005 TOYOTA AVENSIS sensor

± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
05±157
AVENSIS REPAIR MANUAL (RM1018E)SHORT FT #1
Short term fuel trim of bank 1/
Min.: ±100 %, Max.: 100%0 20 %

LONG FT #1Long term fuel trim of bank 1/
Min.: ±100 %, Max.: 100 %0 20 %

TOTAL FT #1Total fuel trim of bank 1/
Min.: 0.5, Max.: 1.496Idling: 0.5 to 1.4

TOTAL FT #2Total fuel trim of bank 2/
Min.: 0.5, Max.: 1.496Idling: 0.5 to 1.4

AF FT B1 S1
Short term fuel trim associated
with the bank 1, sensor 1/
Min.: 0, Max.: 1.999
Lean: 0 < 1

Stoichiometric Air±Fuel Ratio = 1

Rich: 1 < 1.999


FUEL SYS #1
Fuel system status (Bank1) /
OL or CL or OLDRIVE or
OLFAULT or CLFAULT
Idling after warming up: CL

OL: Open Loop±has not yet sa-
tisfied conditions to go closed
loop.

CL: Closed Loop±using oxygen
sensor(s) as feed back for fuel
control.

OL DRIVE: Open loop due to
driving conditions. (power enrich-
ment, deceleration enleanment)

OL FAULT: Open loop due to de-
tected system fault.

CL FAULT: Closed loop, but fault
with at least one oxygen sensor
may be using single oxygen sen-
sor for fuel control.
FC IDLIdle fuel cut /
ON or OFFFuel cut operation: ON

CHK ENGCHK ENG status /
ON or OFFCHK ENG ON: ON

STARTER SIGStarter signal /
ON or OFFCranking: ON

A/C SIGA/C signal /
ON or OFFA/C ON: ON

PNP SW [NSW]Neutral position switch signal /
ON or OFFP or N position: ON

ELECT LOAD SIGElectrical load signal /
ON or OFFDefogger switch ON: ON

STOP LIGHT SWStop light switch /
ON or OFF
Brake pedal depressed: ON

Brake pedal released: OFF

PS OIL PRESS SWPower steering signal /
ON or OFFSteering position is;
center: OFF
Except center:ON


PS SIGNALPower steering signal/
ON or OFF
After engine start: OFF

After steer the steering: ON

FUEL PUMP / SPDFuel pump / speed status /
ON/H or OFF/M,LIdling: ON

EVAP VSVVSV status for EVAP control /
ON or OFFVSV operating: ON

VVT CTRL B1VVT control status / ON or OFFVVT system operation: ON

IGNITIONIgnition counter/
Min.: 0, Max.: 4000 to 400

CYL #1, #2, #3, #4Misfire ratio of the cylinder 1/
Min.: 0 %, Max.: 50 %0 %

05±158
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)THROTTLE POS
Throttle position sensor output
voltage/
Min.: 0 V, Max.: 5 V
Throttle fully closed: 0.3 to 0.8 V

Throttle fully open: 3.2 to 4.9 VRead the value with ignition switch
ON (Do not start engine)
THROTTLE TARGTTarget position of throttle valve/
Min.: 0 V, Max.: 5 VIdling: 0.4 to 1.0 VRead the value with ignition switch
ON (Do not start engine)
If no conditions are specifically stated for ºldlingº, it means the shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.
7. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one of the meth-
od to shorten diagnostic time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the hand±held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of the hand±held tester.
(f) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TESTº.
(g) According to the display on tester, perform the ºACTIVE TESTº.
Hand±held Tester DisplayTest DetailsDiagnostic Note
INJ VOL
[Test Details]
Control the injection volume
Min.: ±12.5 %, Max.: 25 %
[Vehicle Condition]
Engine speed: 3000 rpm or less.
All injectors are tested at once.

Injection volume is gradually
changed between ±12.5 and
25%.
A/F CONTROL
[Test Details]
Control the injection volume
±12.5 %  25 % (Change the injection volume ±12.5 % or 25 %.)
[Vehicle Condition]
Engine speed: 3000 rpm or less.
The following procedure of A/F
CONTROL enables the technician
to check and graph the voltage
outputs of both the A/F sensor and
heated oxygen sensor.
To display the graph indication, se-
lect O2S B1 S1 or A/F B1S1 and
press button º4º after selecting
ºACTIVE TEST/A/F CONTROL/
USER DATAº.
EVAP VSV (ALONE)
[Test Details]
Activate the VSV for EVAP control.
ON or OFF


FUEL PUMP / SPD
[Test Details]
Control the fuel pump.
ON or OFF


VVT CTRL B1
[Test Details]
Activate the VVT system.
ON or OFF
ON: Rough idle or engine stall.

OFF: Normal engine speed.
TC/TE1
[Test Details]
Connect the TC and TE1
ON or OFF


FC IDL PROHBT
[Test Details]
Control the idle fuel cut prohibit
ON or OFF

A63955
GND
CH1
(G2+)
CH2
(NE+) GND
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
05±229
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0340/12CAMSHAFT POSITION SENSOR ºAº
CIRCUIT (BANK 1 OR SINGLE SENSOR)
DTCP0341/12CAMSHAFT POSITION SENSOR ºAº CIRCUIT RANGE/PERFORMANCE (BANK 1
OR SINGLE SENSOR)
CIRCUIT DESCRIPTION
The camshaft position sensor (G signal) consists of a magnet, iron core a\
nd pickup coil.
The G signal rotor has 3 teeth on its outer circumference and is install\
ed on the intake camshaft.
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 position sensor plate) has 34 teeth an\
d is installed to the crankshaft. The
NE signal sensor generates 34 signals at every engine revolution. The EC\
M detects the crankshaft angle
and the engine revolution based on the NE signals, and the cylinder and the\
angle of the VVT based on the
combination of the G and NE signals.
DTC No.DTC Detection ConditionTrouble Area
P0340/12

No camshaft position sensor signal to ECM during cranking
(1 trip detection logic)
Open or short in camshaft position sensor circuit
ChftitiP0340/12(1 tri detection logic)

No camshaft position sensor signal to ECM with engine
speed 600 rpm or more (1 trip detection logic)
Camshaft position sensor

Camshaft timing pulley

Timingchainhasjumpedatooth
P0341/12While crankshaft rotates twice, camshaft position sensor signal
is input to ECM 12 times or more (1 trip detection logic)
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 P0335/12, 13 and P0339/13 on page 05±226.
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.
05C71±01

A73303
G±G+
Camshaft Position Sensor C1


A66132
G+G±
Camshaft Position Sensor Connector Wire Harness Side
C1
A65743NE± G2
E13
ECM Connector
05±230
± DIAGNOSTICSSFI SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
1 INSPECT CAMSHAFT POSITION SENSOR
(a) Measure the resistance between the terminals of cam-
shaft posision sensor connector.
Resistance:
835 to 1,400  (Cold)
1,060 to 1,645 (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 OR
CONNECTOR
OK
3 CHECK SENSOR INSTALLATION(CAMSHAFT POSITION SENSOR)
(a) Check the camshaft position sensor installation.
NG TIGHTEN SENSOR
OK

±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±111
AVENSIS REPAIR MANUAL (RM1018E)
DTCP1346VVT SENSOR/CAMSHAFT POSITION
SENSOR CIRCUIT RANGE/PERFORMANCE
PROBLEM (BANK 1)
CIRCUIT DESCRIPTION
Refer to DTC P0335 on page 05±84
DTC No.Detection ItemTrouble Area
P1346Deviation in crankshaft position sensor signal and camshaft
position sensor 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±84
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
the malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was run-
ning or stopped, the engine was warmed up or not, the air±fuel ratio \
was lean or rich, etc. at the time of the
malfunction.
1CHECK VALVE TIMING (See page 14±49)
NGADJUST VALVE TIMING(See page 14±49)
OK
CHECK AND REPLACE ECM (See page 01±32)
0506C±04

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±381
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0134OXYGEN SENSOR CIRCUIT NO ACTIVITY
DETECTED (BANK 1 SENSOR 1)
DTCP0154OXYGEN SENSOR CIRCUIT NO ACTIVITY DETECTED (BANK 2 SENSOR 1)
CIRCUIT DESCRIPTION
Refer to DTC P0130 on page 05±363.
DTC No.DTC Detection ConditionTrouble Area
P0134
P0154
After engine is warmed up, heated oxygen sensor (sensor 1)
output does not indicate RICH (
0.45 V) even once when
conditions (a), (b), (c) and (d) continue for at least 65 sec.:
(a)Engine speed: 1,400 rpm or more
(b)Vehicle speed: 130 km/h (81 mph)
(c)Throttle valve is not fully closed
(d)180 sec. or more after starting engine

Open or short in heated oxygen sensor (bank 1, 2 sensor 1)
circuit

Heated oxygen sensor (bank 1, 2 sensor 1)

Heated oxygen sensor heater (bank 1, 2 sensor 1)

EFI relay

Air induction system

Fuel pressure

PCV hose connection

PCV valve and hose

Injector

Gas leakage in exhaust system

ECM
HINT:

&$"!$ !%\b \f!\b
\f'%&!&%&$&""!$ &"'&#'&("&"
&&")*!%!%"$! 
%!%"$ $" & ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALLº
&"'&#'&("&"&&")*!%!%"$%%%&!\b &&")*!%!%"$$'&
*"#!"$%"$&

Bank 1 refers to the No. 1 and No. 4 cylinders.

Bank 2 refers to the No. 2 and No. 3 cylinders.

Sensor 1 refers to the sensor closest to the engine assembly.
WIRING DIAGRAM
Refer to DTC P0130 on page 05±363.
INSPECTION PROCEDURE
HINT:
Hand±held tester only:
Narrowing down the trouble area is possible by performing the ºA/F CONTROLº ACTIVE TEST (heated oxy-
gen sensor or other trouble areas can be distinguished).
(a) Perform ACTIVE TEST using the hand±held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume\
±12.5 % or +25 %.
(1) Connect the hand±held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 9\
0 sec.
(4) Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / A/F CONTROLº\
.
(5) Perform ºA/F CONTROLº with the engine in an idle condition (press\
the right or left button).
Result:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume:
+25 %
rich output: More than 0.55 V
±12.5 %
lean output: Less than 0.4 V
05CKB±01

+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Case 1
Case 2
Case 3
Case 4
Output voltage of heated oxygen
sensor (sensor 1: front sensor)
Injection volume
Output voltage
Output voltage of heated oxygen
sensor (sensor 2: rear sensor)Mainly suspect
trouble area
OK
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
Sensor 1: front sensor
(sensor 1, heater, sensor 1
circuit)
+25 %
±12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
+25 %
±12.5 %
Injection volume
Output voltage
NG
+25 %
±12.5 %
Injection volume
Output voltage
NG
+25 %
±12.5 %
Injection volume
Output voltage
NG
+25 %
±12.5 %
Injection volume
Output voltage
NGExtremely rich or lean actual
air±fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
No reaction
No reaction
No reaction No reaction


Sensor 2: rear sensor
(sensor 2, heater, sensor 2
circuit) 05±382
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
NOTICE:
There is a few seconds delay in the sensor 1 (front sensor) output. And there is about 20 seconds
delay in the sensor 2 (rear sensor).
The following A/F CONTROL procedure enables the technician to check and graph the voltage outputs of
both the heated oxygen sensors.
For displaying the graph indication, enter ºACTIVE TEST / A/F CONTROL / USER DATAº, then select ºO2S
B1S1 and O2S B1S2º or ºO2S B2S1 and O2S B2S2º by pressing ºYESº button and push ºENTERº button
before pressing ºF4º button.
HINT:

If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may be open.

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.

A high heated oxygen sensor (sensor 1) voltage (0.55 V or more) could be caused by a rich air fuel
mixture. Check for conditions that would cause the engine to run rich.

A low heated oxygen sensor (sensor 1) voltage (0.4 V or less) could be caused by a lean air fuel mix-
ture. Check for conditions that would cause the engine to run lean.

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±383
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0134 AND/OR P0154)
(a)Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
Only ºP0134 and/or P0154º are outputA
ºP0134 or P0154º and other DTCs are outputB
HINT:

If any other codes besides ºP0134 and/or P0154º are output, perform t\
he troubleshooting for those
DTCs first.

If a misfiring DTC(s) is present, record the DTC(s) that indicates mis\
firing cylinder(s), then proceed to
A.
BGO TO RELEVANT DTC CHART (See page 05±309)
A
2READ VALUE OF HAND±HELD TESTER(OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR)
(a)Warm up the engine to the normal operating temperature above 75 C (169 F).
(b)Read the output voltage of the heated oxygen sensor (sensor 1) when the engine rpm is suddenly\
in- creased.
HINT:
Quickly accelerate the engine to 4,000 rpm 3 times using the accelerator pedal.\
Standard:
Heated oxygen sensor (sensor 1) outputs a RICH signal (0.45 V or more\
) at least once.
NGGo to step 6
OK
3PERFORM CONFIRMATION DRIVING PATTERN (See page 05±363)
HINT:
Clear all DTCs prior to performing the confirmation driving pattern. GO
4READ OUTPUT DTC(DTC P0134 AND/OR P0154 ARE OUTPUT AGAIN)
(a)Read the DTC using the hand±held tester. Result:
Display (DTC output)Proceed to
ºP0134 and/or P0154º are not output againA
ºP0134 and/or P0154º are output againB
BCHECK AND REPLACE ECM (See page 01±32)
A