2005 TOYOTA AVENSIS heating

01±18
± INTRODUCTIONREPAIR INSTRUCTION
AVENSIS REPAIR MANUAL (RM1018E)
NOTICE:

Confirm that the VSC warning light blinks.

VSC system will be reset when the engine is re-
started.

Fasten the vehicle with lock chains.
(b) NOTICES OF RELATED OPERATIONS TO VSC
(1) Do not carry out unnecessary installation and re-
moval as it might disorder the adjustment of related
parts to VSC.
(2) Be sure to carry out the preparation for operation
and the confirmation of operation completion in ac-
cordance with the instruction of the text and when
the related operations to VSC are performed.
10. FOR VEHICLES EQUIPPED WITH CATALYTIC CONVERTER
CAUTION:
If a large amount of unburned gasoline flows into the converter, it may cause overheating and is a
fire hazard. To prevent this, observe the following precautions.
(a) Use only unleaded gasoline.
(b) Avoid prolonged idling.
Avoid idling the engine for more than 20 minutes.
(c) Avoid a spark jump test.
(1) Perform a spark jump test only when absolutely necessary. Perform this test as rapidly as pos-
sible.
(2) While testing, never race the engine.
(d) Avoid a prolonged engine compression measurement.
Engine compression measurements must be performed as rapidly as possible.
(e) Do not run the engine when the fuel tank is nearly empty. This may cause the engine to misfire and
create an extra load on the converter.

± 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

± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
05±1053
AVENSIS REPAIR MANUAL (RM1018E)
(4) Align the marks on the torque sensor wire harness
with the clamp, as shown in the illustration.
NOTICE:

When reusing the clamp, check that there is no dam-
age on it.

When reinstalling the wire harness, make sure there
is no twist in the harness or with other wire harness.
10. FAIL SAFE FUNCTION
(a) If the power steering ECU assy detects a trouble, the ECU
assy halt, fix or lower the steering power assist in order to
protect the system.
HINT:
Repeating the steering operation when stopping or driving at
low speed, or leaving the steering wheel turn fully for long hours
will lower the amount of power assist in order to prevent power
steering ECU assy from heating up. In this case, not operating
the steering for about 10 minutes with engine idle will lead the
fail safe function to return the normal state.

05C7W±01
05±1166
± DIAGNOSTICSCOMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.Description of faultComment / Remedy
000No malfunction±
010
011Overvoltage shutoff
Undervoltage shutoffVoltage between 1 and 5 at connector A > 16 V
Voltage between 1 and 5 at connector A < 10.2 V
(Voltage values must be present > 20 seconds)
Check battery, regulator and electrical leads.
012Overheating
Check temperature at temperature or overheating sensor >
125
C
Check water circuit.
014Possible overheating detected
(Hardware threshold value)
Difference of measured values at temperature sensor > 15
C
(min. 70
C water temperature and metering pump in opera-
tion);
Check temperature sensor and overheating sensor, replace if
necessary.
017Overheating detected
(Hardware threshold value)
Temperature at temperature or overheating sensor > 130
C,
emergency OFF if DTC No. 012 or 014 not is applicable;
Check water circuit, temperature sensor and overheating sen-
sor, replace if necessary.
020Glow plug breakCheck glow plug, replace if necessary.
021Glow plug output overloadCheck glow plug, replace if necessary.
030Combustion air blower motor
EMF outside perm. range.Blower impeller or burner motor fammed (frozen solid, dirty,
etc.)
Remedy jam, replace burner motor if necessary.
031Combustion air blower motor breakCheck the lead to combustion air motor (burner motor) for
continuity, replace if necessary.
032Combustion air blower motor short±circuit
Check combustion air blower motor (burner motor), replace if
necessary.
Check supply lead (chafed, etc.).
047Metering pump short±circuitCheck the supply lead to metering pump for short±circuit,
check metering pump, replace if necessary.
048Metering pump breakCheck the supply lead to metering pump for continuity, remedy
break, replace metering pump if necessary.
051Cold blow time exceeded
At start, if flame sensor above 70
C, > 240 sec.;
Check exhaust gas combustion air supply, check flame sen-
sor, replace if necessary.
052Safety time exceeded
When all perm. start attempts used up;
Check the fuel delivery and fuel supply.
Check exhaust gas and combustion air ducts.
054Flame cutout, High settingCheck the fuel delivery and fuel supply.
Check exhaust gas combustion air ducts.
056Flame cutout, LOW setting
Check exhaust gas combustion air ducts.
If combustion OK
Check the flame sensor, replace if neces-
sary.
060Temperature conrol sensor break
Check connecting leads.
Resistance value between 2 and 10 connector B > 2 M
(if
break)
061Temperature control sensor short±circuit
Check connecting leads.
Resistance value between 2 and 10 at connector B < 2 M
(If
short± circuit)
064Flame sensor break
Check connecting leads.
Resistance value between 7 and 14 at connector B > 3,040

(If break)
065Flame sensor short±circuit
Check connecting leads.
Resistance value between 7 and 14 at connector B > 780
(If
short±circuit)

05C7V±01



I12508
Connector B
DTC Check Harness
Current DisplayControl PanelPast Record DTC Display
Memory Clear Button
DTC Calling Button
DTC Calling ButtonºHeatingº
Symbol In Normal
In Malfunction Connector A
05±1164
± DIAGNOSTICSCOMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
NOTICE:

If the glow plug breaks, the ECU detects the breakage and stops the automatic operation, so
the burner heater does not activate. (For other failures, similarly activated.)

The cause of failures (such as voltage malfunction, overheating malfunction, short±circuit or
breakage of functional components, etc.) and repair methods are shown by connecting the DTC
tester and reading the DTC.
1. DIAGNOSTICS FUNCTION
(a) Connect the DTC tester between the connector A (Vehicle harness) of DTC check harness and con-
nector B (Power heater harness).
(b) Start the engine.
(c) Pressing the DTC calling button displays a 3±digit number DTC.

190JF±02




A34838
19±32
± STARTING & CHARGINGPRE±HEATING SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT GLOW PLUG RELAY ASSY
(a) Using an ohmmeter, check for continuity between each
terminal.
Specified condition:
No continuity
1 ± 2Continuity
(Apply battery voltage terminals 3 and 4)

190JE±02
A82619
Light Lightning Time
Water Temperature ±20 0 28 0
±4 32 (
F) (
C)
82.4 (sec.)
10
3
1
A72562
Pre±heating Time (sec)Battery Voltage [V]
A80155
After Glow Time
Water Temperature68 104 (
F) 020 40(
C) (sec.)
1 19±30
± STARTING & CHARGINGPRE±HEATING SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
PRE±HEATING SYSTEM (1CD±FTV)
ON±VEHICLE INSPECTION
NOTICE:
Turn the ignition switch OFF for 60 seconds before performing the following inspections.
1. INSPECT LIGHTING DURATION OF GLOW INDICA-
TOR LIGHT
(a) Turn the ignition switch ON, and measure the lighting
duration.
Light lighting duration: Refer to the chart graph
2. INSPECT PRE±HEATING
(a) Turn the ignition switch ON, measure how long it takes to
the battery voltage is applied to the glow plugs.
SST 09082±00030, 09083±00150
Pre±Heating time:
Engine coolant temperaturePre±Heating time
40
C or more1 sec
40
C or lessRefer to the chart graph
(15 sec at the longest)
(b) Turn the ignition switch STA, check that the battery volt-
age applied to the glow plugs.
SST 09082±00030, 09083±00150
(c) While cranking the engine, measure how long it takes to
the battery voltage is applied to the glow plugs.
SST 09082±00030, 09083±00150
Pre±Heating time:
Engine coolant temperaturePre±Heating time
40
C or more1 sec
40
C or lessRefer to the chart graph
(15 sec at the longest)
3. INSPECT AFTER GLOW TIME
(a) After the engine starting, measure how long it takes to the
battery voltage is applied to the terminal SREL of the
ECM.
After glow time: Refer to the chart graph

B08263
Ohmmeter
Continuity
± STARTING & CHARGINGPRE±HEATING SYSTEM (1CD±FTV)
19±31
AVENSIS REPAIR MANUAL (RM1018E)
4. INSPECT GLOW PLUGS
(a) Using an ohmmeter, check that there is continuity be-
tween the glow plug terminal and ground.
Standard resistance: Approx. 0.72
at 20C (68F)
NOTICE:

Be careful not to damage the glow plug pipes as it
could cause an open circuit or shorten life of the glow
plugs.

Avoid getting oil and gasoline on the glow plug when
cleaning.

Wipe up any oil on the terminal and Bakelite washer
with a dry cloth if they are stained with oil during in-
spection.

Be careful not to apply more than 11 V to the glow plug
as it could cause an open circuit.