2005 TOYOTA AVENSIS Circuit

550ZG±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
± HEATER & AIR CONDITIONERCOMBUSTION TYPE POWER HEATER SYSTEM
55±15
AVENSIS REPAIR MANUAL (RM1018E)
COMBUSTION TYPE POWER HEATER SYSTEM
ON±VEHICLE INSPECTION
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.

± HEATER & AIR CONDITIONERCOMBUSTION TYPE POWER HEATER SYSTEM
55±17
AVENSIS REPAIR MANUAL (RM1018E)
5. DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for the 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 014s not 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 control 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)

55±18
± HEATER & AIR CONDITIONERCOMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)DTC No.Comment / Remedy Description of fault
071Surface sensor break
Check connecting leads.
Resistance value between 4 and 11 at connector B > 2
 (If
break)
072Surface sensor short±circuit
Check connecting leads.
Resistance value between 4 and 11 at connector B > 50  (If
short±circuit)
090
092
093Control unit detective (Internal fault / Reset)
Control unit detective (ROM error)
Control unit detective (RAM error)
Control unit malfunction due to interference voltage from ve-
hicle electrical system;
possible causes low batteries, chargers, other sources of
interference; eliminate interference voltages.
Internal faults detected in microprocessor / memory detected.
Replace control unit.
097Internal control unit faultsOther faults which cannot lead to DTC No. 90, 92 and 93,
replace control unit.

600JU±01
±
SUPPLEMENTAL RESTRAINT SYSTEM SUPPLEMENTAL RESTRAINT SYSTEM
60±1
AVENSIS REPAIR MANUAL (RM1018E)
SUPPLEMENTAL RESTRAINT SYSTEM
PRECAUTION
CAUTION:

AVENSIS is equipped with SRS, which comprises of a driver airbag, front passeng\
er airbag,
side airbag, curtain shield airbag and driver knee airbag. Failure to carry \
out service operations
in the correct sequence could cause the SRS to unexpectedly deploy during \
servicing, possibly
leading to serious accident. Further, if a mistake is made in servicing the SRS, it is possible that
the SRS may fail to operate when required. Before performing servicing (in\
cluding removal or
installation of parts, inspection or replacement), be sure to read the \
following items carefully,
then follow the correct procedures indicated in the repair manual.

Work must be started 90 seconds after the ignition switch is turned to the º\
LOCKº position and
the negative (±) terminal cable is disconnected from the battery.
(The SRS is equipped with a back±up power source so that if work is started wi\
thin 90 seconds
after disconnecting the negative (±) terminal cable of the battery, the SRS may be deployed.)

Do not expose the horn button assy, instrument panel passenger airbag assy, instrument panel
airbag assy, airbag sensor assy center, airbag front sensor, front seat airbag assy, side airbag
sensor assy, curtain shield airbag assy, airbag sensor rear or seat position airbag sensor di-
rectly to hot air or flames.
NOTICE:

Malfunction symptoms of the SRS are difficult to confirm, so DTCs are th\
e most important in-
formation source of information when troubleshooting. When troubleshooting the SRS, always
inspect DTCs before disconnecting the battery.

Even in the case of a minor collision when the SRS does not deploy, the horn button assy, instru-
ment panel passenger airbag assy, instrument panel airbag assy, airbag sensor assy center,
airbag front sensor, front seat airbag assy, side airbag sensor assy, curtain shield airbag assy,
airbag sensor rear and seat position sensor must be inspected (See page 60±11).

Before repairs work, remove the airbag sensor if any kind of shock is likely to occur to the sen-
sor during operation.

Never use SRS parts from another vehicle. When replacing the parts, repl\
ace them with new
ones.

Never disassemble nor repair the horn button assy, instrument panel passenger airbag assy,
instrument panel airbag assy, airbag sensor assy center, airbag front sensor, front seat airbag
assy, side airbag sensor assy, curtain shield airbag assy, airbag sensor rear or seat position
airbag sensor in order to reuse it.

If the horn button assy, instrument panel passenger airbag assy, instrument panel airbag assy,
airbag sensor assy center, airbag front sensor, front seat airbag assy, side airbag sensor assy,
curtain shield airbag assy, airbag sensor rear or seat position airbag sensor has been dropped,
or if there are any cracks, dents or other defects in the case, bracket \
or connector, replace it
with a new one.

Use a volt/ohmmeter with high impedance (10 k
/V minimum) for troubleshooting the electrical
circuits circuits.

Information labels are attached to the periphery of the SRS components. Follow the instruc-
tions the notice.

After work on the SRS is completed, perform the SRS warning light check \
(See page 05±1184).

Z05953
Spacer
Housing
Female Male
R10587
When Connector is Connected When Connector is Disconnected
Short Spring Plate
Housing
Housing
Terminal
ConnectorsShort Spring PlateSquib
Closed CircuitSquib Short Spring Plate ONContacting Male Terminal Short Spring Plate
60±4
± SUPPLEMENTAL RESTRAINT SYSTEMSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)No.
ItemApplication
(1)Terminal Twin±Lock MechanismConnectors 2, 4, 6, 8, 10, 12, 13, 14, 15, 19, 21, 22, 25
(2)Activation Prevention MechanismConnectors 2, 4, 16, 18, 20, 22, 24, 26, 28, 30
(3)Electrical Connection Check MechanismConnectors 1, 2, 3, 4
(4)Half Connection Prevention MechanismConnectors 6, 8, 10, 14, 15, 19, 21, 25
(5)Connector Lock MechanismConnectors 17, 23, 27, 29
(a) All connectors for the SRS are colored in yellow to distin-
guish them from other connectors. The connectors hav-
ing special functions and specifically designed for the
SRS are used in the locations shown on the previous
page to ensure high reliability. These connectors use du-
rable gold±plated terminals.
(1) Terminal twin±lock mechanism:
Each connector has a two±piece component con-
sisting of a housing and a spacer. This design en-
ables the terminal to be locked securely by two lock-
ing devices (the retainer and the lance) to prevent
terminals from coming out.
(2) Activation prevention mechanism:
Each connector contains a short spring plate. When
the connector is disconnected, the short spring
plate automatically connects positive (+) terminal
and negative (±) terminal of the squib.

650ND±02
E15683
± LIGHTINGLIGHTING SYSTEM
65±5
AVENSIS REPAIR MANUAL (RM1018E)
ON±VEHICLE INSPECTION
1. INSPECT TURN SIGNAL FLASHER CIRCUIT
(a) Measure voltage between the terminal as shown in the
chart below.
Standard:
Tester connectionConditionSpecified condition
1 ± body groundTurn ignition switch ON10 to 14 V
1 ± body groundTurn ignition switch OFFNo voltage
4 ± body groundAlways10 to 14 V
7 ± body groundAlwaysContinuity
(b) Connect the connector to turn the signal flasher and the
ignition switch ON, and inspect the wire harness side con-
nector from the back side as shown in the chart.
Standard:
Tester connectionConditionSpecified condition
2 ± body groundHazard switch OFF  ON0V 10 to 14 V (60 to 120 time per minutes)
2 ± body groundTurn signal switch (right turn) OFF  ON0V 10 to 14 V (60 to 120 time per minutes)
3 ± body groundHazard switch OFF  ON0V 10 to 14 V (60 to 120 time per minutes)
3 ± body groundTurn signal switch (left turn) OFF  ON0V 10 to 14 V (60 to 120 time per minutes)
5 ± body groundTurn signal switch (left turn) OFF  ON10 to 14 V 0 V
6 ± body groundTurn signal switch (right turn) OFF  ON10 to 14 V 0 V
8 ± body groundHazard switch OFF  ON10 to 14 V 0 V

±
LIGHTING LIGHTING SYSTEM
65±3
AVENSIS REPAIR MANUAL (RM1018E)
3. TURN SIGNAL AND HAZARD WARNING SYSTEM
SymptomSuspect AreaSee page
ºHazardº and ºTurnº do not come on.
1. HAZARD fuse
2. GAUGE2 fuse
3. IG1 relay
4. Ignition switch
5. Turn signal flasher relay
6. Harness or connector±
±
±
±
65±5
±
Hazard warning light does not come on.
(Turn is normal)1. Hazard warning switch
2. Harness or connector65±9±
Turn signal does not come on.
(Hazard is normal)1. Headlamp dimmer switch (turn signal switch)
2. Harness or connector65±9±
Turn signal does not come on in one direction.1. Headlamp dimmer switch (turn signal switch)
2. Harness or connector65±9±
Only one bulb does not come on.1. Bulb
2. Harness or connector±
±
4. ILLUMINATED ENTRY SYSTEM
SymptomSuspect AreaSee page
Illumination lamp of Multiplex body ECU control does not come
on.
1. Ignition switch
2. Door courtesy switch
3. Door lock position switch
4. Harness or connector
5. Integration relay±
65±9
05±1534 ±
±
Illumination lamp of Multiplex body ECU control does not go off.
1. Ignition switch
2. Door courtesy switch
3. Door lock position switch
4. Harness or connector
5. Integration relay±
65±9
05±1534 ±
±
5. HEADLIGHT BEAM LEVEL CONTROL SYSTEM (W/O HID)
SymptomSuspect AreaSee page
Headlight beam level control system does not operate (All).
1. TAIL relay
2. Headlamp leveling switch
3. Harness or connector±
65±9 ±
Headlight beam level control system does not operate (One side).
1. Headlamp leveling switch
2. Headlight beam level control actuator
3. Harness or connector65±9
65±5±
6. HEADLIGHT BEAM LEVEL CONTROL SYSTEM (W/ HID)
SymptomSuspect AreaSee page
Headlight beam level control system does not operate (All).
1. GAUGE2 fuse
2. Ignition switch
3. Speed sensor signal circuit
4. Height control sensor sub±assy
5. Headlamp leveling ECU assy
6. Harness or connector±
±
±
65±9
65±5 ±
Headlight beam level control system does not operate (One side).
1. Headlamp leveling ECU assy
2. Headlight beam level control actuator
3. Harness or connector65±5
65±5±
Beam level warning light comes on.
1. Height control sensor sub±assy
2. Headlamp leveling ECU assy
3. Harness or connector65±9
65±5±

610CL±02
B69502
AA
Buckle Switch ON
1
3 2
4
B69502
AA
Buckle Switch OFF
1
3 2
4
B69852
3 2
1
4AA
Connect of Airbag
Seat Position Sensor12B
B
B69501
AA
Buckle Switch ON
B
B
3 21
4321
± SEAT BELTSEAT BELT WARNING SYSTEM
61±3
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. Driver side:
INSPECT FRONT SEAT INNER BELT ASSY
(a) Inspect the buckle switch.
(1) Fasten the seat belt (Buckle switch is ON).
(2) Check the resistance between the terminals.
Standard:
Tester ConnectionSpecified Condition
A±1 ± A±31,330

(3) Release the seat belt (Buckle switch is OFF).
(4) Check the resistance between the terminals.
Standard:
Tester ConnectionSpecified Condition
A±1 ± A±3330

If the result is not as specified, replace the inner belt assy.
(b) Inspect the circuit for the airbag seat position sensor.
(1) Check the resistance between the terminals of con-
nector A and the connector of the airbag seat posi-
tion sensor.
Standard:
Tester ConnectionSpecified Condition
A±2 ± B±1 (Connector for airbag seat position sensor)Below 1
A±4 ± B±2 (Connector for airbag seat position sensor)Below 1

If the result is not as specified, replace the inner belt assy.
2. Passenger side:
INSPECT FRONT SEAT INNER BELT ASSY
(a) Inspect the buckle switch.
(1) Fasten the seat belt (Buckle switch is ON).
(2) Check the resistance between the terminals.
Standard:
Tester ConnectionSpecified Condition
A±1 ± B±3Below 1

A±3 ± B±1Below 1