TOYOTA AVENSIS 2005 Service Repair Manual

05−1 8
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
S If communication is still impossible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool’s instruction manual.
4. INSPECT BATTERY VOLTAGE Battery voltage: 11 to14V
If voltage is below 11 V, recharge the battery before proceeding.
5. CHECK CHK ENG
(a) The CHK ENG c om es on when t he ignit ion swit ch is turned to ON and the engine is not running.
HINT:
If the CHK ENG is not illuminated, troubleshoot the CHK ENG
circuit (see page 05 −25 1).
(b) When the engine is started, the CHK ENG should not illu- minate. If the lamp remains on, the diagnosis system has
detected a malfunction or abnormality in the system.

05CDW−02
A53766
E13E12E11E10E9
05−12
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
TERMINALS OF ECM
Each ECM terminal’s standard normal voltage is shown in the table below.
In the table, first follow the information under ”Condition”. Look under ”Symbols (Terminals No.)” for the termi-
nals to be inspected. The standard normal voltage between the terminals is shown under ”STD Voltage”.
Use the illustration above as a reference for the ECM terminals.
Symbols (Terminals No.)Wiring ColorTerminal DescriptionConditionSTD Voltage
BATT (E9−3)−E1(E11−1)B−Y−BR
Battery (for measuring the
battery voltage and for the
ECM memory)
Always9to14V
+BM (E10−6)−E1(E11−1)G−Y−BRPower source of throttle
motorAlways9to14V
IGSW (E9−9)−E1(E11−1)B−W−BRIgnition switchIgnition switch ON9to14V
+B (E9−1)−E1(E11−1)B−R−BRPower source of ECMIgnition switch ON9to14V
+B2 (E9−2)−E1(E11−1)B−R−BRPower source of ECMIgnition switch ON9to14V
MREL (E9−8)−E1(E11−1)GR−BREFI relayIgnition switch ON9to14V
IREL (E10−35)−E1(E11−1)V−BRINJ relayIgnition switch ON9to14V
VC (E13−18)−E2 (E13−28)R−W−BRPower source of sensor
(a specific voltage)Ignition switch ON4.5 to 5.5 V
VTA1(E13−21)−E2 (E13−28)L−W−BRThrottle position sensor
(for the engine control)Ignition switch ON, Accelerator ped-
al fully released0.4 to1.0 V
VTA1(E13−21)−E2 (E13−28)L−W−BRThrottle position sensor
(for the engine control)Ignition switch ON, Accelerator ped-
al fully depressed3.2 to 4.8 V
VTA2 (E13−31)−E2 (E13−28)B−R−BR
Throttle position sensor
(for the sensor malfunc-
tion detection)Ignition switch ON, Accelerator ped-
al fully released2.1to 3.1V
VTA2 (E13−31)−E2 (E13−28)B−R−BR
Throttle position sensor
(for the sensor malfunc-
tion detection)Ignition switch ON, Accelerator ped-
al fully depressed4.5 to 5.5 V
VPA (E9−22)−EPA (E9−28)G−Y
Accelerator pedal position
sensor (for the engine
control)Ignition switch ON, Accelerator ped-
al fully released0.5 to1.1V
VPA (E9−22)−EPA (E9−28)G−Y
Accelerator pedal position
sensor (for the engine
control)Ignition switch ON, Accelerator ped-
al fully depressed2.5 to 4.6 V
VPA2 (E9−23)−EPA2 (E9−29)W−Y
Accelerator pedal position
sensor (for the sensor
malfunction detection)Ignition switch ON, Accelerator ped-
al fully released1.5 to 2.9 V
VPA2 (E9−23)−EPA2 (E9−29)W−Y
Accelerator pedal position
sensor (for the sensor
malfunction detection)Ignition switch ON, Accelerator ped-
al fully depressed3.5 to 5.5 V
VCPA (E9−26)−EPA (E9−28)B−Y
Power source of acceler-
ator pedal position sensor
(for VPA)
Ignition switch ON4.5 to 5.5 V

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 3
AVENSIS Supplement (RM 1045E)
Symbols (Terminals No.)
STD Voltage
Condition
Terminal Description
Wiring Color
VCP2 (E9 −27) −EPA2 (E9 −29)B −Y
Power source of acceler-
ator pedal position sensor
(for VPA2)
Ignition switch ON4.5 to 5.5 V
VG (E 13− 30) −EVG (E 13− 29)L− Y −GMass air flow meterIdling, P or N position, A/C switch
OFF0.5 to 3.0 V
THA (E 13− 20) −E2 (E 13− 28)GR −BRIntake air temperature
sensorIdling, Intake air temperature 20 ËšC
(68 ËšF)0.5 to 3.4 V
THW (E 13−1 9)−E2 (E 13− 28)B −W −BREngine coolant tempera-
ture sensorIdling, Coolant temperature 80 ËšC
(176ËšF)0.2 to 1.0 V
#1 (E 13−1 )− E0 1(E 13− 7)
#2 (E 13− 2) −E0 1(E 13− 7)
#3 (E 13− 3) −E0 1(E 13− 7)
#4 (E 13− 4) −E0 1(E 13− 7)G −W −W −B
W −R −W −B
R −W −W −B
W −L − W −B
InjectorIgnition switch ON9to 14V
#1 (E 13−1 )− E0 1(E 13− 7)
#2 (E 13− 2) −E0 1(E 13− 7)
#3 (E 13− 3) −E0 1(E 13− 7)
#4 (E 13− 4) −E0 1(E 13− 7)G −W −W −B
W −R −W −B
R −W −W −B
W −L − W −B
InjectorIdlingPulse generation
(See page 05 −1 36)
IJF 1(E 13− 25) −E0 1(E 13− 7)R −B −W −BInjectorIdlingPulse generation
(See page 05 −1 36)
IGT 1(E 13− 8) −E1 (E 11−1 )
IGT2 (E 13− 9) −E1 (E 11−1 )
IGT3 (E 13−1 0)−E1 (E 11−1 )
IGT4 (E 13−11 )− E1 (E 11−1 )R−W −BR
P −BR
LG −B −BR
L − Y −BR
Ignition coil with igniter
(ignition signal)IdlingPulse generation
(See page 05 −1 67)
IGF 1(E 13− 24) −E1 (E 11−1 )W−R −BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
Ignition switch ON4.5 to 5.5 V
IGF 1(E 13− 24) −E1 (E 11−1 )W−R −BR
Ignition coil with igniter
(ignition confirmation sig-
nal)
IdlingPulse generation
(See page 05 −1 67)
G2+ (E 11 −27) −NE −(E 11 − 24)W−RCamshaft position sensorIdlingPulse generation
(See page 05 −1 64)
NE+ (E 11 −25) −NE −(E 11 − 24)G−RCrankshaft position sen-
sorIdlingPulse generation
(See page 05 −1 60)
FPR (E 12− 7) −E0 1(E 13− 7)LG −BRFuel pump relayIgnition switch ON0−3.0 V
FC (E9 −10)−E1 (E 11−1 )G−Y −BRFuel pump controlIgnition switch ON9to 14V
M+ (E 11 −3)−ME0 1(E 11 − 4)
M − (E 11 − 2)−ME0 1(E 11 − 4)B−W −B
W −W −BThrottle motorIdlingPulse generation
OX 1A(E 12− 22) −E2 (E 13− 28)B −BRHeated oxygen sensorMaintain engine speed at 2,500 rpm
for 2 minutes after warming upPulse generation
(See page 05 −82)
OX 1B(E 12− 21)
− O1B − (E 11 − 26)B−WHeated oxygen sensorMaintain engine speed at 2,500 rpm
for 2 minutes after warming upPulse generation
(See page 05 −82)
OX2A (E 12− 23) −E2 (E 13− 28)R −BRHeated oxygen sensorMaintain engine speed at 2,500 rpm
for 2 minutes after warming upPulse generation
(See page 05 −82)
OX2B (E 12− 29)
− O2B −(E 11 − 31)R −GHeated oxygen sensorMaintain engine speed at 2,500 rpm
for 2 minutes after warming upPulse generation
(See page 05 −82)
HT 1A(E 12− 5) −E03 (E 11 −7)
HT 1B(E 12− 25) −E03 (E 11 −7)
HT2A (E 12− 4) −E03 (E 11 −7)
HT2B (E 12− 33) −E03 (E 11 −7)Y−W −B
P −W −B
L −W −B
L − B
−W −B
Heated oxygen sensor
heaterIdlingBelow 3.0 V
HT 1A(E 12− 5) −E03 (E 11 −7)
HT 1B(E 12− 25) −E03 (E 11 −7)
HT2A (E 12− 4) −E03 (E 11 −7)
HT2B (E 12− 33) −E03 (E 11 −7)Y−W −B
P −W −B
L −W −B
L − B
−W −B
Heated oxygen sensor
heaterIgnition switch ON9to 14V
KNK 1(E 12−1 )− EKNK (E 12− 2)B −WKnock sensorMaintain engine speed at 4,000 rpm
after warming upPulse generation
(See page 05 −1 56)

05−1 4
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
Symbols (Terminals No.)
STD Voltage
Condition
Terminal Description
Wiring Color
OC 1+(E 11−1 6)
− OC 1−(E11−1 5)W−G −Y−BCamshaft timing oil con-
trol valve (OCV)Ignition switch ONPulse generation
(See page 05 −41)
EVP 1(E 13− 34) −E0 1(E 13− 7)W −G −W −BVSV for EVAPIgnition switch ON9to 14V
SCV (E 13− 5) −E1 (E 11−1 )L− B −BRVSV for IACVIgnition switch ON9to 14V
PIM (E 13− 33) −E2 (E 13− 28)G −W −BRVacuum sensorIgnition switch ON3.3 to 3.9 V
PIM (E 13− 33) −E2 (E 13− 28)G −W −BRVacuum sensorApply vacuum of 26.7 kPa (200
mmHg, 7.9 in.Hg)2.6 to 3.0 V
PB (E 13− 26) −E2 (E 13− 28)Y −BRBrake booster pressure
sensorIgnition switch ON3.3 to 3.9 V
PB (E 13− 26) −E2 (E 13− 28)Y −BRBrake booster pressure
sensorApply vacuum of 26.7 kPa (200
mmHg, 7.9 in.Hg)2.6 to 3.0 V
PR (E 13− 23) −E2 (E 13− 28)Y −G −BRFuel pressure sensorIdling2.1 to 3.2 V
FP+ (E 12− 6) −E0 1(E 13− 7)
FP −(E 12− 3) −E0 1(E 13− 7)R −BR
G −BRSpill valveIdlingPulse generation
(See page 05 −207)
STA (E 13−1 7)−E1 (E 11−1 )B−Y −BRStarter signalShift position in neutral, Ignition
switch START6.0 V or more
STP (E 10−1 9)−E1 (E 11−1 )G−W −BRStop lamp switchBrake pedal depressed9to 14V
STP (E 10−1 9)−E1 (E 11−1 )G−W −BRStop lamp switchBrake pedal releasedBelow 1.5 V
ST 1− (E10−1 2)−E1 (E 11−1 )G−W −BRStop lamp switchIgnition switch ON, Brake pedal de-
pressedBelow 1.5 V
ST 1− (E10−1 2)−E1 (E 11−1 )G−W −BRStop lamp switchIgnition switch ON, Brake pedal re-
leased7.5 to 14V
W (E9 −11)− E1 (E 11−1 )W−W −BCHK ENGIdling9to 14V
W (E9 −11)− E1 (E 11−1 )W−W −BCHK ENGIgnition switch ONBelow 3.0 V
ELS (E9 −12)−E1 (E 11−1 )G−BRElectric loadTaillight switch ON, Defogger switch
ON7.5 to 14V
ELS (E9 −12)−E1 (E 11−1 )G−BRElectric loadTaillight switch OFF, Defogger
switch OFF0to 1.5 V
TACH (E9 −5) −E1 (E 11−1 )GR−R −BREngine speedIdlingPulse generation
SPD (E 10−1 7)−E1 (E 11−1 )V−W −W −BSpeed signal from com-
bination meterIgnition switch ON, Rotate driving
wheel slowly4.5 to 5.5 V
TC (E9 −20) −E1 (E 11−1 )W−L −BRTerminal TC of DLC 3Ignition switch ON9to 14V
SIL (E9 −18)−E1 (E 11−1 )W−G −BRTerminal SIL of DLC3Connect the hand −held tester to
DLC3Pulse generation
PSW (E 11−10)−E1 (E 11−1 )G−BRPower steering oil pres-
sure switchWhile turning the steering wheelBelow 1.5 V
F/PS (E9 −14)−E1 (E 11−1 )LG−B −BRAirbag sensor assemblyIgnition switch ONBelow 1.5 V

05CDX−02
05 −1 0
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
PROBLEM SYMPTOMS TABLE
When the malfunction is not confirmed in the diagnostic trouble code check and the problem still can not be
confirmed in the basic inspection, proceed to this matrix chart and troubleshoot according to the numbered
order given below.
SymptomSuspected AreaSee page
Engine does not crank (Does not start)
1. Starter
2. Starter relay
3. Park/neutral position switch19 −1
1 9 −1
* 1
No initial combustion (Does not start)
1 . ECM power source circuit
2. Ignition coil assy
3. Fuel pump control circuit
4. Injector circuit05 −236
05 −1 67
05 −24 1
05 −1 36
No complete combustion (Does not start)
1. Ignition coil assy
2. Fuel pump control circuit
3. Injector circuit05 −1 67
05 −24 1
05 −1 36
Difficult to start (Engine cranks normally)
1. Starter signal circuit
2. Ignition coil assy
3. Spark plug
4. Compression
5. Injector circuit
6. Fuel pump control circuit05 −249
05 −1 67
1 8 − 3
1 4 −1
05 −1 36
05 −24 1
Difficult to start with cold engine
1. Starter signal circuit
2. Injector circuit
3. Ignition coil assy
4. Spark plug
5. Fuel pump control circuit05 −249
05 −1 36
05 −1 67
1 8 − 3
05 −24 1
Difficult to start with hot engine
1. Starter signal circuit
2. Injector circuit
3. Ignition coil assy
4. Spark plug
5. Fuel pump control circuit05 −249
05 −1 36
05 −1 67
1 8 − 3
05 −24 1
High engine idle speed (Poor idling)
1. ECM power source circuit
2. Park/neutral position switch
3. Back up power source circuit05 −236
* 1
05 −1 99
Low engine idle speed (Poor idling)
1. Park/neutral position switch
2. Injector circuit
3. Back up power source circuit
4. Fuel pump control circuit* 1
05 −1 36
05 −1 99
05 −24 1
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 −55
05 −61
05 −1 36
05 −24 1
05 −1 67
1 4 −1
05 −1 99
Hunting (Poor idling)
1. Mass air flow meter circuit
2. Vacuum sensor circuit
3. ECM power source circuit05 −55
05 −61
05 −236
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 −55
05 −61
05 −1 36
05 −1 67
05 −24 1
Muffler explosion after fire (Poor driveability)
1. Ignition coil assy
2. Spark plug
3. Injector circuit05 −1 67
1 8 − 3
05 −1 36

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −11
AVENSIS Supplement (RM 1045E)
Symptom
See page
Suspected Area
Surging (Poor driveability)1 . Spark plug
2. Injector circuit1 8 − 3
05 −1 36
Engine stalls soon after starting1. Mass air flow meter circuit
2. Vacuum sensor circuit05 −55
05 −61
Engine stalls after accelerator pedal depressed1. Mass air flow meter circuit
2. Vacuum sensor circuit05 −55
05 −61
Engine stalls after accelerator pedal release
1. Mass air flow meter circuit
2. Vacuum sensor circuit
3. ECM05 −55
05 −61
05 −1 2
Engine stalls during A/C operation1. A/C signal circuit (Compressor circuit)
2. ECM* 1
05 −1 2
Engine stalls when shifting from N to D1. Park/neutral position switch*1
*1: See page 40 −8 of Pub. No. RM 1018E AVENSIS.

05HHY−01
05 −8
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
BASIC INSPECTION
When the malfunction is not confirmed in the DTC check, troubleshooting should be carried out in all the
possible circuits considered as causes of the problem. In many cases, by carrying out the basic engine check
shown in the following flowchart, the location causing the problem can be found quickly and efficiently. There-
fore, using this check is essential in the engine troubleshooting.
1 CHECK BATTERY VOLTAGE
NOTICE:
Carry out this check with the engine stopped and ignition switch OFF.
OKNG
Voltage11 V or moreLess than 11 V
NG CHARGE OR REPLACE BATTERY
OK
2 CHECK IF ENGINE WILL CRANK
NG PROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05 −1 0
OK
3 CHECK IF ENGINE STARTS
NG GO TO STEP 7
OK
4 CHECK AIR FILTER
(a) Visually check that the air filter is not excessively dirty or oily. NG REPLACE AIR FILTER
OK
5 CHECK IDLE SPEED (See page 14−1 )
NG PROCEED TO PROBLEM SYMPTOMS TABLE
ON PAGE 05 −1 0
OK

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −9
AVENSIS Supplement (RM 1045E)
6 CHECK IGNITION TIMING (See page 14−1 )
NG PROCEED TO PAGE 18−1 AND CONTINUE TO
TROUBLESHOOT
OK
PROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05 −1 0
7 CHECK FUEL PRESSURE (See page 11− 4)
NG PROCEED TO PAGE 11−1 AND CONTINUE TO
TROUBLESHOOT
OK
8 CHECK FOR SPARK (See page 18−1 )
NG PROCEED TO PAGE 18−1 AND CONTINUE TO
TROUBLESHOOT
OK
PROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05 −1 0

05HHW−01
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −7
AVENSIS Supplement (RM 1045E)
CHECK FOR INTERMITTENT PROBLEMS
HINT:
Hand −held tester only:
Inspect the vehicle’s ECM using check mode. Intermittent problems are easier to detect when the ECM is
in check mode with a hand −held tester. In check mode, the ECM uses 1 trip detection logic, which has a
higher sensitivity to malfunctions than normal mode (default) using uses 2 trip detection logic.
(a) Clear the DTCs (see page 05 −1 9) .
(b) Set the check mode (see page 05 −20).
(c) Perform a simulation test (see page 0 1− 22).
(d) Check the connector and terminal (see page 0 1− 32).
(e) Wiggle the harness and the connector (see page 0 1− 32).

05CDT−02
ENGINE CONTROL SYSTEM Check Sheet
Customer’s Name
Date Vehicle
Brought in
License Plate No.
VIN
Production Date
Odometer Reading
km
miles
Problem Symptoms
Engine does
not Start
Difficult to
Start
Poor Idling
Poor
Driveability
Engine Stall
Others
Engine does not crankNo initial combustionNo complete combustion
Engine cranks slowly
Other
Incorrect first idleIdling rpm is abnormalHigh ( rpm)Low ( rpm)
Rough idling
Other
HesitationBack fireMuffler explosion (after−fire)Surging
Knocking
Other
Soon after startingAfter accelerator pedal depressed
After accelerator pedal released
During A/C operation
Shifting from N to D
Other
Data Problem
Occurred
Problem Frequency
Condition When
Problem Occurs
Weather
Engine Operation
Engine Temp. Place Outdoor
TemperatureConstant
Sometimes ( times per day/month)Once only
Other
Fine
CloudyRainySnowyVarious/Other
Hot
Warm Cool
HighwaySuburbsInner CityUphillDownhill
Rough road
Other
Cold
Warming upAfter Warming upAny temp.Other
Starting
Just after starting ( min.)IdlingRacing
Driving
Constant speedAccelerationDeceleration
A/C switch ON/OFF
Other
Condition of check engine warning lamp
(CHK ENG)Remains on Sometimes lights up Does not light up
Normal Malfunction code(s) (code )
Freeze frame data ( )
Normal Malfunction code(s) (code )
Freeze frame data ( )
Normal mode
(Pre−check)
Check Mode DTC InspectionInspector’s
Name
Cold (approx._C/_F)
05−6
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
CUSTOMER PROBLEM ANALYSIS CHECK