2005 TOYOTA AVENSIS diagnostic

B68156
C10
Combination Meter Assy
(Combination Meter ECU) Wire Harness Side
T6
Theft Warning ECU AssyE10
*1
ECM
E9
*2,
3
ECM
I14
Instrument Panel J/B Assy
(Integration Relay)
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05±1695
AVENSIS REPAIR MANUAL (RM1018E)
1 CHECK RESISTANCE OF COMMUNICATION LINE
(a) Disconnect the C10, E10 or E9, T6 and I14 connectors.
(b) Check the resistance between wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
*1
C10±13 (BEAN) (EFI) ±
E10±18 (MPX1)
*2
C10±13 (BEAN) (EFI) ±
E9±23 (MPX1)
*3
C10±13 (BEAN) (EFI) ±
E9±20 (MPX1)Below 1

C10±14 (BEAN) (BODY) ±
I14±22 (MPX2)
C10±15 (BEAN) (SECURITY) ±
T6±31 (MPX)
HINT:
*
1: 1AZ±FSE
*
2: 1AZ±FE, 1ZZ±FE, 3ZZ±FE
*
3: 1CD±FTV
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK

B67965
Wire Harness SideC11
Combination Meter Assy
(Combination Meter ECU)
B68158
Wire Harness SideC10
Combination Meter Assy
(Combination Meter ECU)
05±1696
±
DIAGNOSTICS MULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
2 CHECK COMBINATION METER ASSY (COMBINATION METER ECU) (POWER SOURCE)
(a) Disconnect the C11 ECU connector.
(b) Check the voltage between the wire harness side con-
nector and the body ground.
Standard:
Tester ConnectionSpecified Condition
C11±20 (+B) ± Body ground10 to 14 V
NG REPAIR OR REPLACE HARNESS AND CONNECTOR
OK
3 CHECK COMBINATION METER ASSY (COMBINATION METER ECU) (GROUND)
(a) Disconnect the C10 ECU connector.
(b) Check the resistance between the wire harness side con-
nector and the body ground.
Standard:
Tester ConnectionSpecified Condition
C10±17 (POWER EARTH) ±
Body groundBelow 1

NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE COMBINATION METER ASSY (COMBINATION METER ECU) (See page 05±1509)

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)

600JV±01
H42615
H42616
H43001
Horn Button Contact Plate
H42618
±
SUPPLEMENTAL RESTRAINT SYSTEM SUPPLEMENTAL RESTRAINT SYSTEM
60±11
AVENSIS REPAIR MANUAL (RM1018E)
ON±VEHICLE INSPECTION
1. HORN BUTTON ASSY (VEHICLES NOT INVOLVED IN
COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check which includes the following items with the horn button assy installed in the vehicle:
Cuts, minute cracks or marked discoloration on the horn
button assy top surface and in the grooved portion.
2. HORN BUTTON ASSY (VEHICLE INVOLVED IN COLLI- SION AND AIRBAG IS NOT DEPLOYED)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check of the horn button assy removed from the vehicle:

Cuts, minute cracks or marked discoloration on the
horn button assy top surface and in the grooved
portion.

Cuts and cracks in wire harness, and chipping in
connectors.

Deformation of the horn button assy.

The deformation of the horn button contact plate of
the steering wheel assy.
HINT:

If the horn button contact plate of the steering wheel assy
is deformed, replace it with a new one. Always replace the
steering wheel assy with a new one.

Never repair it in order for reuse or replacement.

There should be no interference between the horn button
assy and steering wheel assy, and the clearance should
be uniform all the way around when the new horn button
assy is installed on the steering wheel assy.
CAUTION:
For removal and installation procedures of the horn button
assy, see ºReplacementº on page 60±17, and be sure to fol-
low the correct procedure.

H42619
H42620
H42621
60±12
±
SUPPLEMENTAL RESTRAINT SYSTEM SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3. INSTRUMENT PANEL PASSENGER AIRBAG ASSY (VEHICLE NOT INVOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check which includes the following items with
the instrument panel passenger airbag assy installed in
the vehicle:
Cuts, minute cracks or marked discoloration on the instru-
ment panel around the instrument panel passenger air-
bag assy.
4. INSTRUMENT PANEL PASSENGER AIRBAG ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
NOT DEPLOYED)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check of the instrument panel passenger air- bag assy removed from the vehicle:

Cuts, minute cracks or marked discoloration on the
instrument panel passenger airbag assy.

Cuts and cracks in wire harness, and chipping in
connectors.

Deformation or cracks on the instrument panel and
instrument panel reinforcement.
HINT:

If the instrument panel or instrument panel reinforcement
is deformed or cracked, never repair it. Always replace it
with a new one.

Never repair it in order for reuse.
CAUTION:
For removal and installation of procedures the instrument
panel passenger airbag assy, see ºReplacementº on page
60±29, and be sure to follow the correct procedure.

H42654
H41401
H42655
H42759
H42656
±
SUPPLEMENTAL RESTRAINT SYSTEM SUPPLEMENTAL RESTRAINT SYSTEM
60±13
AVENSIS REPAIR MANUAL (RM1018E)
5. FRONT SEAT AIRBAG ASSY (VEHICLE NOT IN-
VOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check which includes the following items with
the front seat airbag assy installed in the vehicle:
Cuts, minute cracks or marked discoloration on the front
seat back assy around the front seat airbag assy.
6. FRONT SEAT AIRBAG ASSY (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check which includes the following items with the front seat airbag assy removed from the vehicle:

Cuts, minute cracks or marked discoloration on the
front seat airbag assy.

Cuts and cracks in wire harness, and chipping in
connectors.
7. CURTAIN SHIELD AIRBAG ASSY (VEHICLE NOT IN- VOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check of the curtain shield airbag assy installed in the vehicle:
Cuts, minute cracks or marked discoloration on the front
pillar garnish and roof headlining assy around the curtain
shield airbag assy.
8. CURTAIN SHIELD AIRBAG ASSY (VEHICLE IN- VOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check which includes the following items with
the curtain shield airbag assy removed from the vehicle:

Cuts, minute cracks or marked discoloration on the
curtain shield airbag assy.

Cuts and cracks in wire harness, and chipping in the
connectors.
9. INSTRUMENT PANEL AIRBAG ASSY (VEHICLE IN- VOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check of the instrument panel airbag assy
installed in the vehicle:
Cuts, minute cracks of marked discoloration on the instru-
ment panel airbag assy.

H42657
H42659
60±14
±
SUPPLEMENTAL RESTRAINT SYSTEM SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
10. INSTRUMENT PANEL AIRBAG ASSY (VEHICLE IN- VOLVED IN COLLISION AND AIRBAG IS NOT
DEPLOYED)
(a)Do a diagnostic system check (See page 05±1184).
(b) Do a visual check of the instrument panel airbag assy re- moved from the vehicle:

Cuts, minute cracks or marked discoloration on the
instrument panel airbag assy.
HINT:

Never repair it in order for reuse or replacement.

There should be no interference between the horn button
assy and steering wheel assy, and the clearance should
be uniform all the around when the new horn button assy
is installed on the steering wheel assy.
CAUTION:
For removal and installation procedures of the horn button
assy, see ºReplacementº on page 60±54, and be sure to fol-
low the correct procedure.
11. AIRBAG SENSOR ASSY CENTER (VEHICLE NOT INVOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
12. AIRBAG SENSOR ASSY CENTER (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED)
(a)Do a diagnostic system check (See page 05±1184).
13. AIRBAG SENSOR ASSY CENTER (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
DEPLOYED)
(a)Replace the airbag sensor assy center (See page 60±62).
14. AIRBAG FRONT SENSOR (VEHICLE NOT INVOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
15. AIRBAG FRONT SENSOR (VEHICLE INVOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).
(b) When the headlamp of the vehicle or its periphery is damaged, check if t\
here is any damage to the airbag front sensor. If there are any defects as mentioned below, replace the airbag front sensor with
a new one:
If there are any defects as mentioned below, replace the airbag front sensor with a new one:

Cracks, dents or chips in the case.

Cracks, dents, chips and scratches in the connector.

Peeling off of the label or damage to the serial number.
16. AIRBAG FRONT SENSOR (VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED)
(a)Replace the airbag front sensor assy (See page 60±64).
17. SIDE AIRBAG SENSOR ASSY (VEHICLES NOT INVOLVED IN COLLISION)
(a)Do a diagnostic system check (See page 05±1184).