warning light TOYOTA AVENSIS 2003 Service Repair Manual

Detection Item
Indicates the system or details of the
problem. Trouble Area
Indicates the suspect areas of
the problem.
Detection Item
DTC No.
(See page)
Trouble Area
SRS

Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness
B0103/12
(05±132) B0102/11
(05±128)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit for that code liste\
d in the table
below (Proceed to the page given for that circuit).

Short in D squib circuit

Open in D squib circuit
B0101/14
(05±124)

Short in D squib circuit (to ground)

Short in D squib circuit (to B+)
Warning Light
ON
ON
ON
ON

Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness

Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness

Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness
B0105/53
(05±136) ON

Airbag sensor assembly

Wire harness
B0106/54
Open in P squib circuit

Airbag sensor assembly

Wire harness

Short in P squib circuit (to Ground) ON
ON
B0100/13
(05±119)

Short in P squib circuit
Front passenger airbag assembly (squib)

Airbag sensor assembly

Wire harness

Front passenger airbag assembly (squib)

Front passenger airbag assembly (squib)
Page or Instructions
Indicates the page where the inspection proce-
dures for each circuit is to be found, or gives
instructions for checking and repairs.


DTC No.
Indicates the diagnostic trouble code.



±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±29
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
The inspection procedures are shown in the table below. This table allows efficient and accurate trouble-
shooting using the diagnostic trouble codes displayed in the diagnostic trouble code chart. Proceed with
troubleshooting in accordance with the inspection procedures listed in the diagnostic c\
hart corresponding
to the diagnostic trouble codes displayed. The diagnostic trouble code chart for the Supplemental Restraint
System is shown below as an example.
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01±30±
INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
The suspected circuits or parts for each problem symptom are shown in the t\
able below. Use this table to
troubleshoot the problem when a Normal code is displayed in the diagnostic trouble c\
ode chart but the prob-
lem is still occurring. Numbers in the table indicate the order in which\
the circuits or parts should be checked.
HINT:
When the problem is not detected by the diagnostic system even though the pr\
oblem symptom is present,
it may be that the problem is occurring outside the detection range of t\
he diagnostic system.
Symptom Suspected AreaSee page
1. With the ignition switch in ACC or ON position, the SRS warning
light sometimes lights up after approx. 6 seconds have elapsed.
2. SRS warning light is always lit up even when ignition switch is
in the LOCK position
1. With the ignition switch in the ACC or ON position, the SRS
warning light does not light up.
PROBLEM SYMPTOMS TABLE
1. DTC is not displayed. 05±187 05±183
Problem SymptomPage
Indicates the page where the flow chart for each circuit
is located.
Circuit Inspection, Inspection Order
Indicates the circuit which needs to be checked for each problem
symptom. Check in the order indicated by the numbers.
Circuit or Part Name
Indicates the circuit or part which needs to be checked.
Proceed with troubleshooting of each circuit in the table below.
1. SRS warning light circuit
(Always lights up when ignition switch is in
LOCK position.)
1. SRS warning light circuit
(Does not light up when ignition switch is turned
to ACC or ON.)
1. Tc terminal circuit
05±180





3. DTC is displayed without Tc and CG terminal connection. 2. SRS warning light is always lit up at the time of DTC check
procedure.


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D25081
Spring Type Clamp
Clamp Track
D20025
CG
DLC3
TS
D30964
±
INTRODUCTION REPAIR INSTRUCTION
01±17
AVENSIS REPAIR MANUAL (RM1018E)
6. HANDLING OF HOSE CLAMPS
(a) Before removing the hose, check the depth of the insert-
ing portion and the clamp position to restore it surely.
(b) Change a deformed or dented clamp for a new one.
(c) In case of reusing a hose, attach the clamp on the clamp track portion of the hose.
(d) For a spring type clamp, adjust it by adding force to the
arrow mark direction after the installation.
7. FOR VEHICLES EQUIPPED WITH MOBILE COMMU- NICATION SYSTEMS
(a) Install the antenna as far away from the ECU and sensors of the vehicle electronic systems as possible.
(b) Install an antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle electronic sys-
tems. For details of the ECU and sensors locations, refer
to the section on applicable components.
(c) Prevent the antenna feeder from getting entangled with the other wiring, and keep the antenna feeder separate
from other wiring as much as possible.
(d) Check that the antenna and feeder are correctly adjusted.
(e) Do not install any high±powered mobile communication system.
8. FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TRC) SYSTEM
(a) NOTICES WHEN USING 2±WHEEL DRUM TESTER
(1) When using a 2±wheel drum tester such as a speedometer tester, a combination tester ofspeedometer and brake, chassis dynamometer or else, always turn the TRC system off via the
TRC OFF switch before measurement.
NOTICE:
TRC system OFF condition can be confirmed by the indication, ºTRC OFF\
º, of the warning light in
the combination meter.
9. FOR VEHICLES EQUIPPED WITH VEHICLE SKIDCONTROL (VSC) SYSTEM
(a) NOTICES WHEN USING DRUM TESTER
(1) When using a drum tester, be sure to start the en-gine with the ignition OFF, and connect SST to the
terminals TS and CG of the DLC3 before measure-
ment in order to prohibit the VSC operation.
SST 09843±18040
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01±18
±
INTRODUCTION REPAIR 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.
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110UD±01
A79188
A80091SST
A79190
11±82
±
FUEL FUEL FILTER ASSY (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
FUEL FILTER ASSY (1CD±FTV)
REPLACEMENT
1. REMOVE AIR CLEANER ASSY
(a) Disconnect the connector.
(b) Remove the air cleaner cap with the air cleaner hose.
(c) Remove the air cleaner filter element.
(d) Remove the 3 bolts and the air cleaner case.
2. REMOVE FUEL FILTER ASSY
(a) Disconnect the 2 fuel hose from the fuel filter. (STD or COLD)
(b) Disconnect the 3 fuel hose from the fuel filter. (W/ ADDTIONAL HEATER)
(c) Disconnect the 2 connectors.
(d) Remove the 2 bolts and the fuel filter.
3. DRAIN FUEL
(a) Loosen the drain plug, and drain the fuel from the fuel filter. 4. REMOVE LEVEL WARNING SWITCH
(a) Clamp the fuel filter in a soft jaw vise.
(b) Using pliers, remove the level warning switch.
NOTICE:
Be careful not to damage the level warning switch.
5. REMOVE FUEL FILTER ELEMENT
(a) Using SST, remove the fuel filter element.SST 09228±64030
6. INSTALL FUEL FILTER ELEMENT
(a) Check and clean the fuel filter installation surface.
(b) Apply fuel to a gasket of a new fuel filter element.
(c) Lightly screw the fuel filter element into place, and tighten it until the gasket comes into contact with the seat.
(d) Tighten it additional 3/4 turn by hand.
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B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter
Battery Ammeter
19±16
±
STARTING & CHARGING CHARGING SYSTEM (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(b) Check that it fits properly in the ribbed grooves.
HINT:
Check with your hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.
5. VISUALLY CHECK GENERATOR WIRING
(a) Check that the wiring is in good condition.
6. LISTEN FOR ABNORMAL NOISES FROM GENERATOR
(a) Check that there is no abnormal noise from the generator while the engin\
e is running.
7. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ON. Check that the charge warning light comes on\
.
(b) Start the engine and check that the light goes off.
HINT:
If the light does not operate as specified, troubleshoot the charge warn\
ing light circuit. 8. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) According to the following procedure, connect an amme-
ter and voltmeter as shown in the illustration.
(1) Disconnect the wire from terminal B of the generatorand connect it to the negative (±) lead of the amme-
ter.
(2) Connect the positive (+) lead of the ammeter to ter- minal B of the generator
(3) Connect the positive (+) lead of the voltmeter to ter- minal B of the generator.
(4) Ground the negative (±) lead of the voltmeter.
(b) Check the charging circuit. (1) Keep the engine speed at 2,000 rpm, check thereading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 12.9 to 14.9 V
HINT:

If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.

If the voltmeter reading is less than the standard voltage,
check the voltage regulator and generator as follows:
9. INSPECT CHARGING CIRCUIT WITH LOAD
(a) Keep the engine speed at 2,000 rpm, turn on the high beam headlights and\
turn the heater blower switch to the ºHIº position.
(b) Check the reading on the ammeter. Standard amperage: 30 A or more
HINT:

If the ammeter reading is less than standard amperage, repair the genera\
tor.

If the battery is fully charged, the indication will sometimes be less t\
han standard amperage.
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B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter
Battery Ammeter
±
STARTING & CHARGING CHARGING SYSTEM (1AZ±FSE)
19±19
AVENSIS REPAIR MANUAL (RM1018E)
(b) Check that it fits properly in the ribbed grooves.
HINT:
Check with your hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.
5. VISUALLY CHECK GENERATOR WIRING
(a) Check that the wiring is in good condition.
6. LISTEN FOR ABNORMAL NOISES FROM GENERATOR
(a) Check that there is no abnormal noise from the generator while the engin\
e is running.
7. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ON. Check that the charge warning light comes on\
.
(b) Start the engine and check that the light goes off.
HINT:
If the light does not operate as specified, troubleshoot the charge warn\
ing light circuit. 8. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) According to the following procedure, connect an amme-ter and voltmeter as shown in the illustration.
(1) Disconnect the wire from terminal B of the generatorand connect it to the negative (±) lead of the amme-
ter.
(2) Connect the positive (+) lead of the ammeter to ter- minal B of the generator
(3) Connect the positive (+) lead of the voltmeter to ter-
minal B of the generator.
(4) Ground the negative (±) lead of the voltmeter.
(b) Check the charging circuit. (1) Keep the engine speed at 2,000 rpm, check thereading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 12.9 to 14.9 V
HINT:

If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.

If the voltmeter reading is less than the standard voltage,
check the voltage regulator and generator as follows:
9. INSPECT CHARGING CIRCUIT WITH LOAD
(a) Keep the engine speed at 2,000 rpm, turn on the high beam headlights and\
turn the heater blower switch to the ºHIº position.
(b) Check the reading on the ammeter. Standard amperage: 30 A or more
HINT:

If the ammeter reading is less than standard amperage, repair the genera\
tor.

If the battery is fully charged, the indication will sometimes be less t\
han standard amperage.
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B00543
B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter
Battery Ammeter
±
STARTING & CHARGING CHARGING SYSTEM (1CD±FTV)
19±27
AVENSIS REPAIR MANUAL (RM1018E)
5. INSPECT DRIVE BELT
(a) Visually check the belt for excessive wear, frayed cords
etc.
HINT:

If any defect found, replace the drive belt.

Cracks on the rib side of a belt are considered acceptable.
If the belt has chunks missing from the ribs, it should be
replaced.
(b) Check that it fits properly in the ribbed grooves.
HINT:
Check with your hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.
6. VISUALLY CHECK GENERATOR WIRING
(a) Check that the wiring is in good condition.
7. LISTEN FOR ABNORMAL NOISES FROM GENERATOR
(a) Check that there is no abnormal noise from the generator while the engin\
e is running.
8. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ON. Check that the charge warning light comes on\
.
(b) Start the engine and check that the light goes off.
HINT:
If the light does not operate as specified, troubleshoot the charge warn\
ing light circuit. 9. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) According to the following procedure, connect an amme-ter and voltmeter as shown in the illustration.
(1) Disconnect to the wire from terminal B of the gener-ator and connect it to the negative (±) lead of the
ammeter.
(2) Connect the positive (+) lead of the ammeter to ter- minal B of the generator
(3) Connect the positive (+) lead of the voltmeter to ter- minal B of the generator.
(4) Ground the negative (±) lead of the voltmeter.
(b) Check the charging circuit. (1) Keep the engine speed at 2,000 rpm, check the
reading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 13.2 to 14.8 V
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B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter
Battery Ammeter
19±6
±
STARTING & CHARGING CHARGING SYSTEM (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(b) Check that it fits properly in the ribbed grooves.
HINT:
Check with your hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.
5. VISUALLY CHECK GENERATOR WIRING
(a) Check that the wiring is in good condition.
6. LISTEN FOR ABNORMAL NOISES FROM GENERATOR
(a) Check that there is no abnormal noise from the generator while the engin\
e is running.
7. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ON. Check that the charge warning light comes on\
.
(b) Start the engine and check that the light goes off.
HINT:
If the light does not operate as specified, troubleshoot the charge warn\
ing light circuit. 8. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) According to the following procedure, connect an amme-ter and voltmeter as shown in the illustration.
(1) Disconnect the wire from terminal B of the generatorand connect it to the negative (±) lead of the amme-
ter.
(2) Connect the positive (+) lead of the ammeter to ter- minal B of the generator
(3) Connect the positive (+) lead of the voltmeter to ter-
minal B of the generator.
(4) Ground the negative (±) lead of the voltmeter.
(b) Check the charging circuit. (1) Keep the engine speed at 2,000 rpm, check thereading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 12.9 to 14.9 V
HINT:

If the voltmeter reading is more than standard voltage, re-
place the voltage regulator.

If the voltmeter reading is less than the standard voltage,
check the voltage regulator and generator as follows:
9. INSPECT CHARGING CIRCUIT WITH LOAD
(a) Keep the engine speed at 2,000 rpm, turn on the high beam headlights and\
turn the heater blower switch to the ºHIº position.
(b) Check the reading on the ammeter. Standard amperage: 30 A or more
HINT:

If the ammeter reading is less than standard amperage, repair the genera\
tor.

If the battery is fully charged, the indication will sometimes be less t\
han standard amperage.
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±
BRAKE STEERING SENSOR
32±67
AVENSIS REPAIR MANUAL (RM1018E)
20.CONNECT BATTERY NEGATIVE TERMINAL (See page 60±1)
21.INSPECT SRS WARNING LIGHT (See page 05±1184)
22.INSPECT ABS WARNING LIGHT AND VSC WARNING LIGHT (See page 05±756)
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