2005 TOYOTA AVENSIS Circuit

1600R±13
± COOLINGCOOLING FAN SYSTEM (1AZ±FE)
16±17
AVENSIS REPAIR MANUAL (RM1018E)
COOLING FAN SYSTEM (1AZ±FE)
ON±VEHICLE INSPECTION
HINT:
It is normal that the cooling fan sometime rotates when the ignition switch is turned from ACC to ON.
1. CHECK COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 77
C (171
F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
If not, check the cooling fan relay and engine coolant temperature sensor, and check for disconnection of
connectors or wire break between the cooling fan relay and engine coolant temperature sensor.
(c) Disconnect the engine coolant temperature sensor connector.
(d) Check that the cooling fan rotates.
If not, check the fuses, cooling fan relay, ECM and cooling fan, and check for a short circuit between the
cooling fan relay and engine coolant temperature sensor.
(e) Reconnect the engine coolant temperature sensor connector.
2. CHECK COOLING FAN OPERATION WITH HIGH TEMPERATURE (Above 95.5
C (204
F))
(a) Start the engine, and raise coolant temperature to above 95.5
C (204
F).
HINT:
Coolant temperature is the detected value by the engine coolant temperature sensor on the water outlet.
(b) Check that the cooling fan rotates.
If not, replace the engine coolant temperature sensor.
3. INSPECT COOLING FAN
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the cooling fan connector.
(c) Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage:
5.2 to 8.2 A at 20
C (68
F) (M/T)
8.3 to 11.3 A at 20
C (68
F) (A/T)
(d) Reconnect the cooling fan connector.
4. INSPECT COOLING FAN No.2 (With Air Conditioner)
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the cooling fan connector.
(c) Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage:
5.2 to 8.2 A at 20
C (68
F) (M/T)
8.3 to 11.3 A at 20
C (68
F) (A/T)
(d) Reconnect the cooling fan connector.

1600R±14
± COOLINGCOOLING FAN SYSTEM (1ZZ±FE/3ZZ±FE)
16±5
AVENSIS REPAIR MANUAL (RM1018E)
COOLING FAN SYSTEM (1ZZ±FE/3ZZ±FE)
ON±VEHICLE INSPECTION
HINT:
It is normal that the cooling fan sometime rotates when the ignition switch is turned from ACC to ON.
1. CHECK COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 94.5
C (202
F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
If not, check the cooling fan relay and engine coolant temperature sensor, and check if there is its connector
disconnection or circuit open between them.
(c) Disconnect the engine coolant temperature sensor connector.
(d) Check that the cooling fan rotates.
If not, check the fuses, cooling fan relay, ECM and cooling fan, and check for short in a circuit between the
cooling fan relay and the engine coolant temperature sensor.
(e) Reconnect the engine coolant temperature sensor connector.
2. CHECK COOLING FAN OPERATION WITH HIGH TEMPERATURE (Above 96
C (205
F))
(a) Start the engine, and raise coolant temperature to above 96
C (205
F).
HINT:
Coolant temperature is detected by the engine coolant temperature sensor on the water outlet.
(b) Check that the cooling fan rotates.
If not, replace the engine coolant temperature sensor.
3. INSPECT COOLING FAN
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the connector.
(c) Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage: Approximately. 8 to 12 A at 20
C (68
F)
(d) Reconnect the cooling fan connector.

1606N±03
A57065
21


± COOLINGCOOLING FAN SYSTEM (1CD±FTV)
16±41
AVENSIS REPAIR MANUAL (RM1018E)
COOLING FAN SYSTEM (1CD±FTV)
ON±VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 83
C (181
F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
(c) Disconnect the temperature detect switch connector.
(d) Connect the terminals on the temperature detect switch connector.
(e) Check that the cooling fan rotates.
If not, check the fuses, cooling fan relay and cooling fan, and check for a open circuit between the cooling
fan relay and temperature detect switch.
(f) Reconnect the temperature detect switch connector.
2. CHECK COOLING FAN OPERATION WITH HIGH TEMPERATURE (Above 93
C (199
F))
(a) Start the engine, and raise coolant temperature to above 93
C (199
F)
HINT:
Coolant temperature is the detected value by the temperature detect switch on the radiator lower tank.
(b) Check that the cooling fan rotates.
If not, replace the temperature detect switch.
3. INSPECT COOLING FANS
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the cooling fan connec-
tor.
(c) Check that the cooling fan rotates smoothly, and check
the reading on the ammeter.
Standard amperage:
Approx. 13.2 A at 20
C (68
F)
(d) Reconnect the cooling fan connector.

1600R±12
± COOLINGCOOLING FAN SYSTEM (1AZ±FSE)
16±29
AVENSIS REPAIR MANUAL (RM1018E)
COOLING FAN SYSTEM (1AZ±FSE)
ON±VEHICLE INSPECTION
HINT:
It is normal that the cooling fan sometime rotates when the ignition switch is turned from ACC to ON.
1. CHECK COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 83
C (181
F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
If not, check the cooling fan relay and engine coolant temperature sensor, and check for disconnection of
connectors or wire break between the cooling fan relay and engine coolant temperature sensor.
(c) Disconnect the engine coolant temperature sensor connector.
(d) Check that the cooling fan rotates.
If not, check the fuses, cooling fan relay, ECM and cooling fan, and check for a short circuit between the
cooling fan relay and engine coolant temperature sensor.
(e) Reconnect the engine coolant temperature sensor connector.
2. CHECK COOLING FAN OPERATION WITH HIGH TEMPERATURE (Above 100
C (212
F))
(a) Start the engine, and raise coolant temperature to above 100
C (212
F).
HINT:
Coolant temperature is the detected value by the engine coolant temperature sensor on the water outlet.
(b) Check that the cooling fan rotates.
If not, replace the engine coolant temperature sensor.
3. INSPECT COOLING FAN
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the cooling fan connector.
(c) Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage:
5.2 to 8.2 A at 20
C (68
F) (M/T)
8.3 to 11.3 A at 20
C (68
F) (A/T)
(d) Reconnect the cooling fan connector.
4. INSPECT COOLING FAN No.2 (With Air Conditioner)
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the cooling fan connector.
(c) Check that the cooling fan rotates smoothly, and check the reading on the ammeter.
Standard amperage:
5.2 to 8.2 A at 20
C (68
F) (M/T)
8.3 to 11.3 A at 20
C (68
F) (A/T)
(d) Reconnect the cooling fan connector.

B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter BatteryAmmeter 19±6
± STARTING & CHARGINGCHARGING 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 engine 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 warning 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 generator
and 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 the
reading 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 generator.

If the battery is fully charged, the indication will sometimes be less than standard amperage.

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.

B00543
B00540
A75980
Disconnect Wire
from Terminal B
Generator
Voltmeter BatteryAmmeter
± STARTING & CHARGINGCHARGING 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 engine 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 warning 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

19±28
± STARTING & CHARGINGCHARGING SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
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:
10. 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 generator.

If the battery is fully charged, the indication will sometimes be less than standard amperage.