2005 TOYOTA AVENSIS stop start

IN0383
Example
Ground
IN0384
Ground ECU Side
W/H Side
Ground
01±36± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
AVENSIS REPAIR MANUAL (RM1018E)
4. CHECK AND REPLACE ECU
NOTICE:

Start an inspection of the connector from the back-
side of the connector on the wire harness side with
the connector connected to the ECU.

When no measurement condition is specified, per-
form the inspection with the engine stopped and also
the ignition switch ON.
(a) First check the ECU ground circuit. If it is faulty, repair it.
If it is normal, the ECU could be faulty. In this case, re-
place the ECU with one that functions normally and check
if the symptoms appear.
(1) Measure the resistance between the ECU ground
terminal and body ground.
Resistance: 1
or less
(2) Disconnect the ECU connector, check the ground
terminals on the ECU side and wire harness side for
bends and check the contact pressure.

030L2±04
03±56
± SERVICE SPECIFICATIONSCLUTCH
AVENSIS REPAIR MANUAL (RM1018E)
TORQUE SPECIFICATION
Part TightenedN
mkgf
cmft
lbf
Clutch pedal support x Stopper bolt2525018
Clutch pedal sub±assy x Clutch pedal support3737527
Clutch pedal support x Body1919514
Clutch pedal support x Clutch start switch assy1616012
Clutch master cylinder push rod clevis lock nut121209
Clutch master cylinder x Flexible hose tube1515511
Clutch master cylinder x Body121209
Clutch release cylinder bleeder plug8.48574 in.
lbf
Clutch release cylinder x Transaxle housing
1CD±FTV/1AZ±FSE/1AZ±FE engine type
121209
Clutch release cylinder x Transaxle housing 1ZZ±FE/3ZZ±FE engine type1414110
Clutch release cylinder x Flexible hose tube bracket
1ZZ±FE/3ZZ±FE engine type
5.05144 in.
lbf
Clutch release cylinder x Clutch line clamp 1AZ±FSE/1AZ±FE engine type121229
Clutch release cylinder x Flexible hose tube1515511
Clutch release cylinder x Clutch accumulator assy 1CD±FTV engine type121209
Clutch accumulator assy x Flexible hose tube 1CD±FTV engine type1515511
Clutch cover assy x Flywheel sub±assy1919514
Release fork support x Transaxle assy 1AZ±FSE/1AZ±FE engine type
1ZZ±FE/3ZZ±FE/1CD±FTV engine type48
37480
37535
27

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

A58694
OX Signal Waveform (Oscilloscope)
1.0 V
0 V 200 msec. /Division
05±92
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(a)Connect the hand±held tester to the DLC3, or connect the probe of the oscilloscope between terminals HT1A,
HT1B, OX1A, OX1B and E1 of the ECM connector.
(b)Start the engine and warm it up with all the accessories switched OFF until the engine coolant temperature is
stable.
(c)Run the engine at 2,500 to 3,000 rpm for about 3 min.
(d)After confirming that the waveform of the heated oxygen
sensor (bank 1 sensor 1 (OX)) which oscillates around 0.5
V during feedback to the ECM, check the waveform of the
heated oxygen sensor (bank 1 sensor 2 (OX)).
HINT:

If there is a malfunction in the system, the waveform of the
heated oxygen sensor (bank 1 sensor 2 (OX)) is similar
to the wave from of the heated oxygen sensor (bank 1
sensor 1 (OX)) snown in the diagram on the left.

There are some cases that, even though a malfunction
exists, the CHK ENG may not be illuminated.
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 OUTPUT DTC(BESIDES P0420)
(a)Read the DTC using the hand±held tester. Result:
Display (DTC output)Proceed to
Only ºP0420º is outputA
ºP0420º and other DTCs are outputB
HINT:
If any other codes besides ºP0420º are output, perform the troublesh\
ooting for those DTCs first.
BGO TO RELEVANT DTC CHART(See page 05±16)
A

A79082
53G±Y
L±B E9 10
4
5 W±B
BR F25
Fuel Pump ECM
B±W 12
FC
C8
Circuit
Opening Relay
From
Terminal 3 of
EFI Relay
(See Page 05±124)
G±Y
B±W
B±W
IB1 10 IC3
6
±
DIAGNOSTICS SFI SYSTEM(1ZZ±FE/3ZZ±FE)
05±131
AVENSIS REPAIR MANUAL (RM1018E)
FUEL PUMP CONTROL CIRCUIT
CIRCUIT DESCRIPTION
In the diagram below, when the engine is cranked, current flows from terminal ST of the igni\
tion switch to
the starter relay coil and also current flows to terminal STA of the ECM (STA signal).
When the STA signal and NE signal are input to the ECM, Tr is turned ON, current flows to the coil of the
circuit opening relay, the relay switches on, power is supplied to the fuel pump and the fuel p\
ump operates.
While the NE signal is generated (engine running), the ECM keeps Tr ON (circuit opening relay ON) and the
fuel pump also keeps operating.
WIRING DIAGRAM
INSPECTION PROCEDURE
1PERFORM ACTIVE TEST USING HAND±HELD TESTER(OPERATION OF CIRCUIT
OPENING RELAY)
(a)Turn the ignition switch ON.
(b)Select the item ºDIAGNOSIS / OBD/MOBD / ACTIVE TEST / FUEL PUMP / SPD\
º.
(c)Perform the active test with the engine stopped.
Result: The circuit opening relay operates.
OKPROCEED TO NEXT CIRCUIT INSPECTIONSHOWN ON PROBLEM SYMPTOMS TABLE
NG
2CHECK FOR ECM POWER SOURCE CIRCUIT(See page 05±124)
NG REPAIR OR REPLACE POWER SOURCE CIRCUIT
OK
05C6H±01

A59779
C2
Camshaft Timing Oil
Control Valve1
2 ECM
W±G OC1+
14
Y±B OC1±
E13
15
E13
05±170
±
DIAGNOSTICS SFI SYSTEM(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
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 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.
When using hand±held tester:
1PERFORM ACTIVE TEST BY HAND±HELD TESTER(OCV OPERATION)
(a)Connect the hand±held tester to the DLC3.
(b)Start the engine and warm it up.
(c)Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(d)Select the item ºDIAGNOSIS / OBD/MOBD/ ACTIVE TEST / VVT CTRL B1 or V\
VT CTRL B2º.
(e)Check the engine speed when operating the OCV by the hand±held tester. Standard:
Tester operationSpecified condition
OCV is OFFNormal engine speed
OCV is ONRough idle or engine stall
OKCHECK FOR INTERMITTENT PROBLEMS (See page 05±149)
NG
2INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY (See page 10±20)
NG REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY
OK

05±314
±
DIAGNOSTICS SFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E) 


\f  
*
1
CHK ENG
 
 \b
P0555
(05±459)Brake Booster Pressure Sensor
Circuit

Open or short in brake booster pressure sensor circuit

Brake booster pressure sensor

Vacuum hose

ECM

P0556
(05±462)Brake Booster Pressure Sensor
Circuit Range/Performance

Vacuum hose (between the brake booster and intake manifold,
the brake booster and brake booster pressure sensor, and the
intake manifold and manifold absolute pressure sensor)

Open or short in brake booster pressure sensor circuit

Brake booster pressure sensor

Manifold absolute pressure sensor

Brake booster

Open or short in stop light switch circuit

Stop light switch

ECM

P0557
(05±459)Brake Booster Pressure Sensor
Circuit Low Input
Same as DTC No. P0555
P0558
(05±459)Brake Booster Pressure Sensor
Circuit High Input
Same as DTC No. P0555
P0560
(05±467)System Voltage
Open in back±up power source circuit

ECM
P0571
(05±1711)Brake Switch ºAº Circuit
Cruise control system

P0604
(05±470)Internal Control Module Random
Access Memory (RAM) Error
P0606
(05±470)ECM/PCM Processor
ECM
P0607
(05±470)Control Module Performance
P0617
(05±471)Starter Relay Circuit High

Short in park/neutral position switch (A/T)

Park/neutral position switch (A/T)

Ignition switch

ECM

P0657
(05±470)Actuator Supply Voltage Circuit /
Open
ECM
P0705 *4
(05±474)
Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input)
Short in park/neutral position switch circuit

Park/neutral position switch

ECM

P0710 *4
(05±941)
Transmission Fluid Temperature
Sensor ºAº circuit
Electronic controlled automatic transmission (ECT)
P0711 *3,4
(05±943)
Transmission Fluid Temperature
Sensor ºAº Performance
Electronic controlled automatic transmission (ECT)
P0712 *4
(05±941)
Transmission Fluid Temperature
Sensor ºAº Circuit Low Input
Electronic controlled automatic transmission (ECT)
P0713 *4
(05±941)
Transmission Fluid Temperature
Sensor ºAº Circuit High Input
Electronic controlled automatic transmission (ECT)
P0717 *4
(05±945)
Input/Turbine Speed Sensor ºAº
Circuit No Signal
Electronic controlled automatic transmission (ECT)
P0724 *4
(05±947)Brake Switch ºBº Circuit High

Short in stop light switch signal circuit

Stop light switch

ECM

P0741 *3,4
(05±948)
Torque Converter Clutch Circuit
Performance or Stuck Off
Electronic controlled automatic transmission (ECT)
P0743 *4
(05±951)
Torque Converter Clutch Circuit
Electrical
Electronic controlled automatic transmission (ECT)

A59673
Inside
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±307
AVENSIS REPAIR MANUAL (RM1018E)
BASIC INSPECTION
When the malfunction code is not confirmed in the DTC check, troubleshooting should be carried out in all
the possible circuits considered as causes of the problems. In many cases, by carrying out the basic engi\
ne
check shown in the following flow chart, the location causing the problem can be found quickly and efficiently.
Therefore, using this check is essential in the engine troubleshooting.
1CHECK BATTERY VOLTAGE
NOTICE:
Carry out this check with the engine stopped and ignition switch OFF.
OKNG
Voltage11 V or moreLess than 11 V
NGCHARGE OR REPLACE BATTERY
OK
2CHECK IF ENGINE WILL CRANK
NGPROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05±320
OK
3CHECK IF ENGINE STARTS
NGGO TO STEP 7
OK
4CHECK AIR FILTER
(a)Visually check that the air filter is not excessively dirty or oily.
NOTICE:
If necessary, clean the filter with compressed air. First blow
from the inside thoroughly, then blow from the outside of
the filter.
NGCLEAN OR REPLACE
OK
5CHECK IDLE SPEED (See page 14±181)
NGPROCEED TO PROBLEM SYMPTOMS TABLE ON PAGE 05±320
OK