ignition TOYOTA AVENSIS 2005 Service Owner's Manual

A54396
Wire Harness SideMass Air Flow Meter Connector
+B
A6
A18294
VG (+)EVG (±)
ECM Connector E12
05±26
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT MASS AIR FLOW METER(POWER SORUCE VOLTAGE)
(a)Disconnect the mass air flow meter connector.
(b)Turn the ignition switch ON.
(c)Measure the voltage between the terminal of the wire har- ness side connector and the body ground.
Standard:
Symbols (Terminal No.)Specified condition
+B (A6±1) ± Body ground9 to 14 V
NGGo to step 5
OK
3INSPECT ECM
(a)Turn the ignition switch ON.
(b)Measure the voltage between the terminals of the E12 ECM connector.
HINT:
The shift position should be P or N and the A/C switch should
be turned OFF. Standard:
Symbols (Terminal No.)ConditionSpecified condition
VG (E12±24) ±
EVG (E12±32)Engine is idling0.5 to 3.0 V
OKCHECK AND REPLACE ECM (See page 01±32)
NG

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

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

±
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


05±18
±
DIAGNOSTICS SFI SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E) P0505*
3
(05±100)Idle Control System Malfunction


Open or short in ISC valve circuit

ISC valve is stuck or closed

PCV hose

A/C switch circuit

Air induction system

ECM

P1300
(05±103)Igniter Circuit Malfunction (No. 1)

Ignition system

Open or short in IGF or IGT1 circuit from No. 1 ignition coil
with igniter to ECM

No. 1 ignition coil with igniter

ECM

P1305
(05±103)Igniter Circuit Malfunction (No. 2)

Ignition system

Open or short in IGF or IGT2 circuit from No. 2 ignition coil
with igniter to ECM

No. 2 ignition coil with igniter

ECM

P1310
(05±103)Igniter Circuit Malfunction (No. 3)

Ignition system

Open or short in IGF or IGT3 circuit from No. 3 ignition coil
with igniter to ECM

No. 3 ignition coil with igniter

ECM

P1315
(05±103)Igniter Circuit Malfunction (No. 4)

Ignition system

Open or short in IGF or IGT4 circuit from No. 4 ignition coil
with igniter to ECM

No. 4 ignition coil with igniter

ECM

P1335
(05±84)Crankshaft Position Sensor Cir-
cuit Malfunction (During engine
running)
Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crank angle sensor plate

ECM


P1346
(05±111)VVT Sensor/Camshaft Position
Sensor Circuit Range/Perfor-
mance Problem (Bank 1)
Mechanical system (Timing chain has janped a tooth, chain
stretched)

ECM

P1349
(05±112)VVT System Malfunction (Bank
1)

Valve timing

OCV

VVT controller assembly

ECM

P1520*2
(05±115)
Stop Light Switch Circuit Mal-
function
Open or short in stop light switch signal circuit

Stop light switch

ECM

P1600
(05±119)ECM BATT Malfunction
Open in back up power source circuit

ECM
P1656
(05±122)OCV Circuit Malfunction (Bank
1)
Open or short in OCV circuit

OCV

ECM

*1:  ... CHK ENG is illuminated.
... CHK ENG is not illuminated.
*
2: Only for A/T models.
*
3: For European spec. only

± 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.

05±76
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK OTHER DTC OUTPUT(BESIDES MISFIRE DTCS)
(a)Read the DTC using the hand±held tester. Result:
Display (DTC output)Proceed to
Only ºP0300, P0301, P0302, P0303 and/or P0304º are outputA
ºP0300, P0301, P0302, P0303 and/or P0304º and other DTCs are outpu\
tB
HINT:
If any other codes besides ºP0300, P0301, P0302, P0303 and/or P0304º are output, perform the trouble-
shooting for those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±16)
A
2CHECK WIRE HARNESS, CONNECTOR AND VACUUM HOSE IN ENGINE ROOM
(a)Check the connection of the wire harness and the connector.
(b)Check the vacuum hose for disconnection, blockage and break. NGREPAIR OR REPLACE, THEN CONFIRM THATTHERE IS NO MISFIRE
OK
3READ VALUE OF HAND±HELD TESTER(NUMBER OF MISFIRE)
(a)Connect the hand±held teste to the DLC3.
(b)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c)Start the engine.
(d)Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL/CYL#1 ± CYL#4º.
(e)Read the number of misfire on the hand±held tester.
HINT:
When a misfire is not reproduced, be sure to branch below based on the s\
tored DTC. Result:
High Misfire Rate CylinderProceed to
1 or 2 cylindersA
More than 3 cylindersB
BGo to step 15
A
4CHECK SPARK PLUG AND SPARK OF MISFIRING CYLINDER (See page 18±1)
OK Go to step 7
NG

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

±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±79
AVENSIS REPAIR MANUAL (RM1018E)
12CHECK VALVE CLEARANCE OF MISFIRING CYLINDER (See page 14±6)
NGADJUST VALVE CLEARANCE
OK
13SWITCH STEP BY NUMBER OF MISFIRE CYLINDER(REFER RESULT OF STEP 4)
High Misfire Rate CylinderProceed to
1 or 2 cylindersA
More than 3 cylindersB
BCHECK FOR INTERMITTENT PROBLEMS
A
14CHECK VALVE TIMING(CHECK FOR LOOSE AND JUMPING TEETH OF TIMING BELT) (See page 14±49)
NGADJUST VALVE TIMING
OK
15CHECK FUEL PRESSURE (See page 11±5)
NG CHECK AND REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND
FILTER
OK
16 READ VALUE OF HAND±HELD TESTER(INTAKE AIR TEMPERATURE AND MASS AIR FLOW RATE)
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Check the intake air temperature.
(1) Select the item ºDIAGNOSIS / OBD/MOBD / DATA LIST / ALL / INTAKE AIRº and read its valuedisplayed on the hand±held tester.
Temperature: Equivalent to ambient temperature
(d) Check the air flow rate. (1) Select the item ºDIAGNOSIS / OBS/MOBD / DATA LIST / ALL / MAFº and read its value displayedon the hand±held tester.
Standard:
ConditionAir flow rate (gm/s)
Ignition switch On (do not start engine)0
Idling4 to 6
Running without load (2,500 rpm)13 to 20
Idling ± RunningAir flow rate fluctuates