2005 TOYOTA AVENSIS check engine light

05C8E±01
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)05±985
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description
(1)When troubleshooting Euro±OBD vehicles, theonly difference from the usual troubleshooting pro-
cedure is that you connect the vehicle to the OBD
scan tool complying with ISO 15031±4 or hand±
held tester, and read off various data output from
the vehicle's ECM.
(2)Euro±OBD regulations require that the vehicle's on±board computer illuminates the Check Engine
Warning Light (Malfunction Indicator Lamp)/CHK
ENG (MIL) on the instrument panel when the com-
puter detects a malfunction in the emission control
system/components or in the driving system com-
ponents which affect vehicle emissions, or a mal-
function in the computer. In addition to CHK ENG
(MIL) illuminating when a malfunction is detected,
the applicable Diagnostic Trouble Codes (DTCs)
prescribed by ISO15031±6 are recorded in the
ECM memory.
If the malfunction does not occur in 3±trip, the CHK ENG (MIL)
goes off but the DTCs remain recorded in the ECM memory. (3)To check the DTCs, connect the OBD scan tool orhand±held tester to the Data Link Connector 3
(DLC3) on the vehicle. The OBD scan tool or hand±
held tester also enables you to erase the DTCs and
check freezed frame data and various forms of en-
gine data (For operating instructions, see the OBD
scan tool's instruction book.).
(4)DTCs include ISO controlled codes and manufac- turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±996).
(5) The diagnosis system operates in normal mode during normal vehicle use. It also has a check mode
for technicians to simulate malfunction symptoms
and troubleshoot. Most DTCs use 2 trip detection
logic (*) to prevent erroneous detection, and ensure
thorough malfunction detection. By switching the
ECM to check mode when troubleshooting, techni-
cians can cause the CHK ENG (MIL) to illuminate
for a malfunction that is only detected once or mo-
mentarily (Hand±held tester only) (See step 2).

D25148
DLC3 12345 768
9 1 0111 21 3 1 514 16
FI2547
05±986± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
(6) *2 trip detection logic:
When a malfunction is first detected, the malfunc-
tion code is temporarily stored in the ECM memory
(1st trip). If the same malfunction is detected again
during the second drive test, this second detection
causes the CHK ENG (MIL) to illumenate (2nd trip)
(However, the ignition switch must be turned OFF
between the 1st trip and the 2nd trip.).
(b) Inspect the DLC3.
(1) The vehicle's ECM uses ISO 9141±2 (Euro±OBD)
communication protocol. The terminal arrangement
of DLC3 complies with ISO 15031±3 and matches
the ISO 9141±2 format.
Terminal No.ConnectionVoltage or ResistanceCondition
7Bus
LinePulse generationDuring communication
4Chassis Ground
Body Ground / 1
or lessAlways
16Battery Positive
Body Ground / 9 to 14 VAlways
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of hand±held tester to
DLC3, turned the ignition switch ON and operated the hand±
held tester, there is a problem on the vehicle side or tool side.

If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.

If communication is still not possible 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.
2. INSPECT DIAGNOSIS (NORMAL MODE)
(a) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not come on, troubleshoot the combination me-
ter.
(2) When the engine is started, the MIL should go off.
If the light remains on, the diagnosis system has de-
tected a malfunction or abnormality in the system.

05±988± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
(8) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs, etc.
(9) After simulating the malfunction conditions, use the
hand±held tester diagnosis selector to check the
DTCs and freeze frame data, etc.
HINT:
Take care not to turn the ignition switch OFF, as turning it off
switches the diagnosis system from Check mode to Normal
mode, which all DTCs etc. are erased.
(10) After checking the DTC, inspect the applicable cir-
cuit.
(b) Clear the DTC.
(1) When using the hand±held tester:
The following operation will erase the DTC and
freeze frame data. Operate the hand±held tester to
erase the codes.
(2) When not using the hand±held tester:
Remove the EFI fuse from engine room J/B for 60
seconds or more.
4. DATA LIST
HINT:
According to the DATA LIST displayed by the hand±held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
of the methods to shorten the work time.
(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) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
STOP LIGHT SWStop light SW Status/
ON or OFF
Brake Pedal is depressed: ON

Brake Pedal is released: OFF
SHIFTActual Gear Position/
1st, 2nd, 3rd, 4th (O/D)Shift lever Range is;

D: 1st, 2nd, 3rd or 4th (O/D)
LOCK UP SOLLock Up Solenoid Status/
ON or OFF
Lock Up: ON

Except Lock Up: OFF
KICKDOWN SWKick down SW Status/
ON or OFF

Accelerator Pedal is depressed
all the way down: ON

Accelerator Pedal is released:
OFF

SNOW SWPattern SW (2nd) Status/
ON or OFF

IG SW ON: OFF



Pattern SW (2nd) Push: ON



Pattern SW (2nd) Push: OFF


05±990±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)
AVENSIS REPAIR MANUAL (RM1018E)
7.ROAD TEST
NOTICE:
Conduct the test at normal operating ATF temperature 50 to 80
C (122 to 176
F).
(a)D range test Shift into the D range and fully depress the accelerator pedal and check\
the following points:
(1)Check up±shift operation.Check that 1  2, 2  3 and 3  O/D up±shift take place, and that the shift points conform to
the automatic shift schedule (See page 03±45).
HINT:
O/D Gear Up±shift Prohibition Control

Coolant temp. is 60 C (140 F) or less and vehicle speed is 70 km/h (43 mph) or less.

ATF temp. is 10 C (50 
) or less.
O/D and 3rd Gear Lock±up Prohibition Control

Brake pedal is depressed.

Accelerator pedal is released.

ATF temp. is 10 C (50 
) or less.

Coolant temp. is 60 C (140 F) or less.
When the 2nd start switch is on, there is no 1 2 up±shift and 2 1 down±shift.
(2)Check for shift shock and slip. Check for shock and slip at the 1  2, 2  3 and 3  O/D up±shift.
(3)Check for abnormal noises and vibration. Run in D range lock±up or O/D gear and check for abnormal noise and v\
ibration.
HINT:
The check for the cause of abnormal noise and vibration must be done ver\
y thoroughly as it could also be
sure to loss of balance in the differential, torque converter, etc. (4)Check kick±down operation.While running in the D range, 2nd, 3rd and O/D gears, check to see that the p\
ossible kick±down
vehicle speed limits for 2  1, 3  2 and O/D  3 kick±downs conform to those indicated in the
automatic shift schedule (See page 03±45).
(5) Check for abnormal shock and slip at kick±down.
(6) Check the lock±up mechanism.

Drive in D range O/D gear, at a steady speed (lock±up ON) of about 70 km/h (43 mph).

Lightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
If there is a big jump in engine speed, there is no lock±up.
(b) S range test Shift to the S range, depress the accelerator pedal and check the follow\
ing points:
Shift operations.

Shifting the shift lever to º+º or º±º changes the shift \
range on the combination meter.
HINT:
Manual shift prohibition control is performed when:

Down±shifting causes engine overrun.

Down±shifting is required continuously. (Down±shifting to 1st gear may not be performed.)
(c) R range test Shift into the R range and fully depress the accelerator pedal and check\
for slipping.
CAUTION:
Before conducting this test, ensure that the test area is free from peop\
le and obstruction.
(d) P range test Stop the vehicle on a grade (more than 5 ) and after shifting into the P range, release the parking
brake. Then, check to see that the parking lock pawl holds the vehicle in plac\
e.

A09514
Front Mark
(Protrusion)
A09493
90_
90_
A09490
Front
Painted Mark
A09495
14−44− ENGINE MECHANICALCYLINDER BLOCK ASSY (1CD−FTV)(From September,
2003)
1CD−FTV ENGINE REPAIR MANUAL (RM1046E)
(g) Match the numbered connecting rod cap with the con-
necting rod.
(h) Install the connecting rod cap with the front mark facing
forward.
(i) Apply a light coat of engine oil to the threads and under-
heads of the connecting rod cap bolts.
(j) Install and alternately tighten the 2 cap bolts in several
steps.
Torque: 30 N
m (306 kgf
cm, 22 ft
lbf)
If any of the cap bolts does not meet the specified torque, re-
place the connecting rod cap bolts.
(k) Mark the front of the cap bolt with paint.
(l) Retighten the cap bolts by 90_as illustrated.
(m) Check that the painted mark is now at a 90_angle to the
front.
NOTICE:
Do not turn the crankshaft.
(n) Remove the 2 bolts, connecting rod cap and lower bear-
ing.
(o) Measure the Plastigage at its widest point.
Standard oil clearance:
0.038 to 0.056 mm (0.0015 to 0.0022 in.)
Maximum oil clearance: 0.10 mm (0.0039 in.)
If the oil clearance is greater than maximum, replace the bear-
ings. If necessary, replace the crankshaft.

A09512
Groove
A56048
A09497
A56046
A87946
Front Mark
(Arrow)
Front Mark
(Protrusion)
− ENGINE MECHANICALCYLINDER BLOCK ASSY (1CD−FTV)(From September,
2003)14−59
1CD−FTV ENGINE REPAIR MANUAL (RM1046E)
(c) Install the 2 thrust washers on the No. 3 bearing cap with
the oil grooves facing outward.
(d) Install the 5 main bearing caps in their proper locations.
HINT:
Each bearing cap has a number and font mark.
(e) Apply a light coat of engine oil to the threads and under-
heads of the main bearing cap bolts.
(f) Install and uniformly tighten the 10 bolts of the main bear-
ing cap in several steps.
Torque: 115 N
m (1,173 kgf
cm, 85 ft
lbf)
(g) Check that the crankshaft turns smoothly.
28. INSTALL W/PIN PISTON SUB−ASSY
(a) Install a new snap ring on one side of the piston pin hole.
(b) Gradually heat the piston up to approximately 60_C
(140_F).
(c) Coat the piston pin and piston hole of the piston with en-
gine oil.
(d) Align the front marks of the piston and connecting rod,
then push in the piston pin by hand.
(e) Install a new snap ring on the other side of the piston pin
hole.

A09514
Front Mark
(Protrusion)
A09493
90_
90_
A09490
Painted Mark
Front
− ENGINE MECHANICALCYLINDER BLOCK ASSY (1CD−FTV)(From September,
2003)14−61
1CD−FTV ENGINE REPAIR MANUAL (RM1046E)
(d) Match the numbered connecting rod cap with the con-
necting rod.
(e) Install the connecting rod cap with the front mark facing
forward.
(f) Apply a light coat of engine oil to the threads and under-
heads of the connecting rod cap bolts.
(g) Install and alternately tighten the 2 cap bolts in several
steps.
Torque: 30 N
m (306 kgf
cm, 22 ft
lbf)
If any of the cap bolts does not meet the specified torque, re-
place the connecting rod cap bolts.
(h) Mark the front of the cap bolt with paint.
(i) Retighten the cap bolts by 90_as illustrated.
(j) Check that the painted mark is now at a 90_angle to the
front.
(k) Check that the crankshaft turns smoothly.

05−40
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
DTC No.
(See Page) Memory
*
1
CHK ENG
Trouble Area
Detection Item
P2 138
(05 −224)Throttle Pedal Position Sensor/
Switch ”D”/”E” Voltage Correla-
tionSVPA and VPA2 circuits are short −circuit
S Accelerator pedal position sensor
S ECM
ff
P2 195 *3
(05 −82)
Oxygen Sensor Signal Stuck
Lean (Bank 1Sensor 1)*7
SOpen or short in heated oxygen sensor circuit
S Heated oxygen sensor (Bank 1Sensor 1)*7
SHeated oxygen sensor heater (Bank 1Sensor 1)*7
SEFI relay
S Air induction system
S Fuel pressure
S Injector
S ECMff
P2 196 *3
(05 −82)
Oxygen Sensor Signal Stuck
Rich (Bank 1Sensor 1)*7
SOpen or short in heated oxygen sensor circuit
S Heated oxygen sensor (Bank 1Sensor 1)*7
SHeated oxygen sensor heater (Bank 1Sensor 1)*7
SEFI relay
S Air induction system
S Fuel pressure
S Injector
S ECMff
P2 197 *3
(05 −82)
Oxygen Sensor Signal Stuck
Lean (Bank 2 Sensor 1)*8
SOpen or short in heated oxygen sensor circuit
S Heated oxygen sensor (Bank 2 Sensor 1)*8
SHeated oxygen sensor heater (Bank 2 Sensor 1)*8
SEFI relay
S Air induction system
S Fuel pressure
S Injector
S ECMff
P2 198 *3
(05 −82)
Oxygen Sensor Signal Stuck
Rich (Bank 2 Sensor 1)*8
SOpen or short in heated oxygen sensor circuit
S Heated oxygen sensor (Bank 2 Sensor 1)*8
SHeated oxygen sensor heater (Bank 2 Sensor 1)*8
SEFI relay
S Air induction system
S Fuel pressure
S Injector
S ECMff
P27 16*4
(05 −622)
Pressure Control Solenoid ”D”
ElectricalSElectronic controlled automatic transmission (ECT)ff
B2799
(*6)Engine Immobilizer System Mal-
functionSImmobilizer system
f
*1:
CHK ENG (Check engine warning light) dese not illuminate,f CHK ENG (Check engine warning
light) illuminates.
*
2: CHK ENG (Check engine warning light) illuminates or blinks.
*
3: For Euro −OBD vehicles only.
*
4: For A/T only.
*
5: See page 05 −1714 of Pub. No. RM 1018E AVENSIS.
*
6: See page 05 −1628 of Pub. No. RM 1018E AVENSIS.
*
7: Bank 1refers to the No. 1and No. 4 cylinders.
*
8: Bank 2 refers to the No. 2 and No. 3 cylinders.