fuel TOYOTA AVENSIS 2005 Service Owner's Manual

A79052
A6
Mass Air Flow MeterECM
1
3 EVG
VG
L±Y
G
2
B±R 12
EA1 32
E12
24
E12
B±R
From
Terminal 2 of
EFI No.1 Fuse
(See Page 05±124)
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±25
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
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.
1READ VALUE OF HAND±HELD TESTER(MASS AIR FLOW RATE)
(a)Connect the hand±held tester to the DLC3.
(b)Start the engine.
(c)Read air flow rate on the hand±held tester.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / MAFº and read its value displayed on the hand±held tester.
Result:
Air flow rate (gm/sec)Proceed to
0.0A
271.0 or moreB
1 less than Mass Air Flow Rate less than 270.0 or more (*1)C
*1: The value must be changed when the throttle valve is opend or closed.
BGo to step 6
CCHECK FOR INTERMITTENT PROBLEMS(See Page 05±5)
A

0505L±04
05±22
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can\
not be confirmed in the basic inspection, proceed to this problem symptoms \
tables and troubleshoot accord-
ing to the numbered order given below.
SymptomSuspect AreaSee page
Engine does not crank (Does not start)1. Starter and starter relay
2. Neutral start switch circuit*19±1

No initial combustion (Does not start)
1. ECM power source circuit
2. Ignition coil (w/ Igniter) circuit
3. Fuel pump control circuit
4. Fuel system05±124
05±103
05±131
11±1
No complete combustion (Does not start)
1. Fuel pump control circuit
2. Ignition coil (w/ Igniter) circuit
3. Fuel system05±131
05±103
11±1
Engine cranks normally (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Ignition coil (w/ Igniter)
5. Spark plug
6. Compression
7. Fuel system05±135
05±100
05±131
05±10318±3
14±111±1
Cold engine (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Fuel system
5. Ignition coil (w/ Igniter)
6. Spark plug05±135
05±100
05±131 11±1
05±103 18±3
Hot engine (Difficult to start)
1. Starter signal circuit
2. ISC valve circuit
3. Fuel pump control circuit
4. Fuel system
5. Ignition coil (w/ Igniter)
6. Spark plug05±135
05±100
05±131 11±1
05±103 18±3
Incorrect first idle (Poor idling)1. ISC valve circuit05±100
High engine idle speed (Poor idling)
1. ISC valve circuit
2. ECM power source circuit
3. Neutral start switch circuit*05±100
05±124

Low engine idle speed (Poor idling)
1. ISC valve circuit
2. Neutral start switch circuit*
3. Fuel pump control circuit
4. Fuel system05±100

05±131 11±1
Rough idling (Poor idling)
1. ISC valve circuit
2. ECM power source circuit
3. Fuel pump control circuit05±100
05±124
05±131
Hunting (Poor idling)
1. ISC valve circuit
2. ECM power source circuit
3. Fuel pump control circuit05±100
05±124
05±131
Hesitation/Poor acceleration (Poor drivability)
1. Fuel system
2. Fuel pump control circuit
3. Ignition coil (w/ Igniter) circuit11±1
05±131
05±103
Muffler explosion, after fire (Poor drivability)
1. Ignition coil (w/ Igniter) circuit
2. Spark plug
3. Fuel system05±103 18±3
11±1
Surging (Poor drivability)
1. Fuel pump control circuit
2. Spark plug
3. Fuel system05±131 18±3
11±1

±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±23
AVENSIS REPAIR MANUAL (RM1018E)
Engine stall (Soon after starting)
1. Fuel pump control circuit
2. ISC valve circuit05±131
05±100
Engine stall (After accelerator pedal released)
1. Injector circuit
2. ISC valve circuit
3. ECM11±8
05±100
05±20
Engine stall (When shifting from N to D)1. Neutral start switch circuit
2. ISC valve circuit

05±100
*: A/T only.

05B3M±03
A79104
Fuel Pump
Circuit Opening Relay
ECM
DLC3
Camshaft Position
Sensor
Engine Coolant
Temperature Sensor
Camshaft Timig OIL
Control Valve Assy
Crankshaft
Position Sensor
Knock Sensor
Mass Air Flow Meter Assy
Heated Oxygen Sensor
(Bank 1 Sensor 1)
Engine Room R/B No.1
Heated Oxygen Sensor
(Bank 1 Sensor 2)
Engine Room R/B No.4
Ignition Coil and Igniter
Injector
Power Steering Oil
Pressure Switch
Idle Speed Control
Valve Assy
Throttle Position Sensor
Vacuum Switching Valve
(for ISC)
VSV for EVAP
± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±19
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

0505J±04
05±16
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to \
the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in the check mode, check the circuit f\
or the codes
listed in the table below. For details of each code, refer to the ''See page '' under the respective ''DTC No.''
in the DTC chart.
DTC No.
(See page)Detection ItemTrouble Area*1
CHK ENGMemory
P0100
(05±24)Mass Air Flow Circuit Malfunc-
tion
Open or short in mass air flow meter circuit

Mass air flow meter

ECM

P0110
(05±30)Intake Air Temperature Circuit
Malfunction
Open or short in intake air temp. sensor circuit

Intake air temp. sensor (built into mass air flow meter)

ECM

P0115
(05±34)Engine Coolant Temperature Cir-
cuit Malfunction
Open or short in engine coolant temperature sensor circuit

Engine coolant temperature sensor

ECM

P0116
(05±38)Engine Coolant Temperature Cir-
cuit Range/Performance Prob-
lem
Engine coolant temperature sensor

Thermostat
P0120
(05±39)Throttle Pedal Position Sensor/
Switch ºAº Circuit Malfunction
Open or short in throttle position sensor circuit

Throttle position sensor

ECM

P0121
(05±44)Throttle Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem

Throttle position sensor
P0125
(05±45)Insufficient Coolant Temp. for
Closed Loop Fuel Control

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

Gas leakage on exhaust system

ECM

P0130*3
(05±54)
Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

P0133*3
(05±60)
Oxygen Sensor Circuit Slow Re-
sponse (Bank 1 Sensor 1)

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

Air induction system

Fuel pressure

Injector

ECM

P0135
(05±65)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 1)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM

P0136
(05±54)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in heated oxygen sensor circuit

Heated oxygen sensor
P0141
(05±65)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM


±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±17
AVENSIS REPAIR MANUAL (RM1018E)P0171*
3
(05±67)
System too Lean (Fuel Trim)
(Bank1)


Air induction system

Injector blockage

PCV hose

Mass air flow meter

Engine coolant temperature sensor

Fuel pressure

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

ECM

P0172*3
(05±67)
System too Rich (Fuel Trim)
(Bank1)

Injector leak, blockage

Mass air flow meter

Engine coolant temperature sensor

Ignition system

Fuel pressure

Open or short in heated oxygen sensor circuit

Gas leakage in exhaust system

Heated oxygen sensor

ECM

P0300*3
(05±73)
Random/Multiple Cylinder Misfire
Detected
Open or short in engine wire

Connector connection
Vac m hose connectionP0301*3
(05±73)Cylinder 1 Misfire Detected

Vacuum hose connection

PCV hose

Ignition system
P0302*3
(05±73)Cylinder 2 Misfire Detected

Injector

Fuel pressure

Mass air flow meter

P0303*3
(05±73)Cylinder 3 Misfire Detected

Mass air flow meter

Engine coolant temperature sensor

Compression pressure

Valve clearance
P0304*3
(05±73)Cylinder 4 Misfire Detected

Valve clearance

Valve timing

ECM
P0325
(05±81)Knock Sensor 1 Circuit Malfunc-
tion (Bank 1)
Open or short in knock sensor circuit

Knock sensor (under±torqued or loose)

ECM

P0335
(05±84)Crankshaft Position Sensor ºAº
Circuit Malfunction

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crank angle sensor plate

ECM

P0340
(05±88)Camshaft Position Sensor Circuit
Malfunction

Open or short in camshaft position sensor circuit

Camshaft position sensor

Intake camshaft

Timing chain has jumped a tooth

ECM

P0420*3
(05±91)
Catalyst System Efficiency Be-
low Threshold (Bank 1)

Gas leakage in exhaust system

Heated oxygen sensor

Three±way catalytic converter

ECM

P0443
(05±94)Evaporative Emission Control
System Purge Control Vent Cir-
cuit Malfunction
Open or short in VSV for EVAP circuit

VSV for EVAP

ECM

P0500
(05±98)Vehicle Speed Sensor Malfunc-
tion

Open or short in speed sensor circuit

Speed sensor

Combination meter

ECM

Skid control ECU


031GY±01
± SERVICE SPECIFICATIONSEXTERIOR/INTERIOR TRIM
03±75
AVENSIS REPAIR MANUAL (RM1018E)
EXTERIOR/INTERIOR TRIM
TORQUE SPECIFICATION
Part TightenedN
mkgf
cmft
lbf
FUEL LID CONTROL ASSY
Fuel lid control assy x Body8.08271 in.
lbf
REAR BUMPER COVER
Rear bumper cover x Body5.55649 in.
lbf
Rear bumper reinforcement No. 1 x Body11.511 516
BACK DOOR GARNISH OUTSIDE
Back door garnish  Body4.95043 in.
lbf
REAR SPOILER (WAGON MODELS)
Rear spoiler  Body9.89987 in.
lbf

± DIAGNOSTICSSFI SYSTEM (1ZZ±FE/3ZZ±FE)
05±73
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0300 RANDOM/MULTIPLE CYLINDER MISFIRE
DETECTED
DTC P0301 CYLINDER 1 MISFIRE DETECTED
DTC P0302 CYLINDER 2 MISFIRE DETECTED
DTC P0303 CYLINDER 3 MISFIRE DETECTED
DTC P0304 CYLINDER 4 MISFIRE DETECTED
CIRCUIT DESCRIPTION
Misfire: The ECM uses the crankshaft position sensor and camshaft position sensor to monitor changes in
the crankshaft rotation of each cylinder.
The ECM counts the number of times from the engine speed change rate, indicating that misfire has oc-
curred. When the misfire rate equals to or exceeds the count, indicating that the engine condition has deteri-
orated, the CHK ENG is illuminated.
If the misfire rate is high enough and the driving conditions causes the catalyst to overheat, the CHK ENG
blinks when the misfire occurs.
HINT:

For any particular 200 revolutions of engine, misfiring which could result in overheating of catalyst is
detected. This cause CHK ENG to blink (1 trip detection logic).

For any particular 1,000 revolutions of engine, misfiring which could result in a deterioration of emis-
sions is detected. This cause CHK ENG to illuminate (2 trip detection logic).
DTC No.DTC Detecting ConditionTrouble Area
P0300Misfiring of random cylinders is detected

Open or short in engine wire

Connector connection

Vacuum hose connection

PCV hose

Ignition system
P0301
P0302Misfiring of each cylinder is detected
Ignition system

Injector

Fuel pressure

Mass air flow meter

Engine coolant temperature sensor
P0302
P0303
P0304Misfiring of each cylinder is detectedEngine coolant tem erature sensor

Compression pressure

Valve clearance

Valve timing

ECM
HINT:
When 2 or more codes for a misfiring cylinder are recorded repeatedly but no random misfire code is re-
corded, it is indicated that the misfires were detected and recorded at different times.
05C6B±01

±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±75
AVENSIS REPAIR MANUAL (RM1018E)
CONFIRMATION DRIVING PATTERN
(a)Connect the hand±held tester to the DLC3.
(b)Record the DTC and freeze frame data.
(c)Use the hand±held tester to set to the check mode (See page 05±5).
(d) Read the value on the misfire counter for each cylinder when idling. If \
the value is displayed on the
misfire counter, skip the following procedure of confirmation driving.
(e) Drive the vehicle several times with the engine speed, load and its surr\
ounding range shown with EN- GINE SPD, CALC LOAD in the freeze frame data or MISFIRE RPM, MISFIRE LOAD in\
the data list.
If you do not have the hand±held tester, turn the ignition switch OFF after the symptom is simulated
once. Then repeat the simulation process again.
HINT:
In order to memorize the DTC of the misfire, it is necessary to drive arou\
nd MISFIRE RPM, MISFIRE LOAD
in the following data list. Be sure not to turn the ignition switch OFF, because the diagnosis system is changed
from the check mode to the nomal mode and will result in all of the DTCs and\
the freeze frame data being
erased.
Engine SpeedTime
Idling5 minutes and 45 seconds or more
1,000 rpm4 minutes or more
2,000 rpm2 minutes and 30 seconds or more
3,000 rpm1 minute and 30 seconds or more
(f) Check if there is misfire by monitoring the DTC and the freeze frame data, an\
d then record them.
(g) Turn the ignition switch OFF and wait for at least 5 seconds.
INSPECTION PROCEDURE
HINT:

If the other DTCs besides misfire are memorized simultaneously, perform the troubleshooting for them
first.

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 d\
etermining whether the vehicle
was running or stopped, the engine was warmed up or not, the air±fuel ra\
tio was lean or rich, etc. at
the time of the malfunction.

If the misfire is not occured when the vehicle is brought to the workshop,\
it can be confirmed by repro-
ducing the condition of the freeze frame data. After finishing the repai\
r, confirm that there is no misfire
(See the confirmation driving pattern).

When either of SHORT FT #1 or LONG FT #1 the freeze frame data is over the range of 20%, there
is a possibility that the air±fuel ratio is inclining either to ºR\
ICHº (±20% or less) or ºLEANº (+20% or
more).

When COOLANT TEMP in the freeze frame data is less than 80
C (176
F), there is a possibility of
misfire only during warming up.

In case that the misfire cannot be reproduced, this may be because of th\
e driving with the shortage
of fuel, the use of improper fuel, a stain of ignition plug and etc.

A18294
#40#30#20#10E01
ECM Connector
E13
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±77
AVENSIS REPAIR MANUAL (RM1018E)
5CHANGE NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER
(See page 18±1)
OKREPLACE SPARK PLUG
NG
6CHECK HARNESS AND CONNECTOR OF MISFIRING CYLINDER(IGNITION COIL ± ECM) (See page 05±103)
OKREPLACE IGNITION COIL ASSY (THEN CON- FIRM THAT THERE IS NO MISFIRE)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
7INSPECT ECM TERMINAL OF MISFIRING CYLINDER(#1, #2, #3 OR #4 VOLTAGE)
(a)Turn the ignition switch ON.
(b)Measure the voltage between the terminals of the E13 ECM connector.
Standard:
Symbols (Terminal No.)Specified condition
#10 (E13±1) ± E01 (E13±7)
#20 (E13±2) ± E01 (E13±7)8to14V#30 (E13±3) ± E01 (E13±7)8 to 14 V
#40 (E13±4) ± E01 (E13±7)
OKGo to step 10
NG
8INSPECT FUEL INJECTOR RESISTANCE OF MISFIRING CYLINDER (See page 11±8)
NG REPLACE FUEL INJECTOR ASSY
OK