Page 2372 of 4770
S05959
CO06N±03
S05953
ECT Switch
Connector
Z19282
No.1
No.2Battery
Ammeter (±)
(+) (+)
(±)
Battery Ammeter CO±24
± COOLING (5S±FE)ELECTRIC COOLING FAN
1598 Author: Date:
ELECTRIC COOLING FAN
ON±VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION WITH LOW TEM-
PERATURE (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 ECT switch, and check
for a separated connector or severed wire between the cooling
fan relay and ECT switch.
(c) Disconnect the ECT switch connector.
(d) Check that the cooling fan rotates.
If not, check the fan main relay, cooling fan relay, cooling fan,
fuses, and check for short circuit between the cooling fan relay
and ECT switch.
(e) Reconnect the ECT switch connector.
2. CHECK COOLING FAN OPERATION WITH HIGH TEM-
PERATURE (Above 93°C (199°F))
(a) Start the engine, and raise coolant temperature to above
93°C (199°F).
(b) Check that the cooling fan rotates.
If not, replace the ECT switch.
3. INSPECT COOLING FANS
(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: 4.9 ± 8.5 A
(d) Reconnect the cooling fan connector.
Page 2380 of 4770
S05391
Engine
Main Relay
CO06U±03
B02803
Ohmmeter
Continuity
OhmmeterOhmmeter
No Continuity
Continuity21
5
43
B02804
Ohmmeter
Ohmmeter
No Continuity
Continuity 2
1
5
43
Battery
CO±32
± COOLING (5S±FE)ENGINE MAIN RELAY
1606 Author: Date:
ENGINE MAIN RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE ENGINE MAIN RELAY (Marking: ENGINE
MAIN)
3. INSPECT ENGINE MAIN RELAY
(a) Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
(2) Check that there is continuity between terminals 2
and 4.
If there is no continuity, replace the relay.
(3) Check that there is no continuity between terminals
1 and 2.
If there is continuity, replace the relay.
(b) Inspect the relay operation.
(1) Apply battery positive voltage across terminals 3
and 5.
(2) Using an ohmmeter, check that there is no continu-
ity between terminals 2 and 4.
If there is continuity, replace the relay.
(3) Check that there is continuity between terminals 1
and 2.
If there is no continuity, replace the relay.
4. REINSTALL ENGINE MAIN RELAY
5. REINSTALL RELAY BOX COVER
Page 2381 of 4770
S05390
No.1 Cooling
Fan Relay
CO06V±03
B02801
Ohmmeter
ContinuityOhmmeter
Continuity4 1
3
2
B02802
No ContinuityOhmmeter
4 1
3
2Battery
S05387
No.2 Cooling
Fan Relay
S04972
Ohmmeter
1
32 4
No Continuity Continuity
5
Continuity OhmmeterOhmmeter
± COOLING (5S±FE)COOLING FAN RELAY
CO±33
1607 Author: Date:
COOLING FAN RELAY
INSPECTION
1. INSPECT NO.1 COOLING FAN RELAY
(a) Remove the relay box cover.
(b) Remove the No.1 cooling fan relay. (Marking: FAN NO.1)
(c) Inspect the No.1 cooling fan relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is continuity between terminals 3
and 4.
If there is no continuity, replace the relay.
(d) Inspect the No.1 cooling fan relay operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is no continu-
ity between terminals 3 and 4.
If there is continuity, replace the relay.
(e) Reinstall the No.1 cooling fan relay
(f) Reinstall the relay box cover.
2. INSPECT NO.2 COOLING FAN RELAY
(a) Remove the relay box cover.
(b) Remove the No.2 cooling fan relay. (Marking: FAN NO.2)
(c) Inspect the No.2 cooling fan relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is continuity between terminals 3
and 4.
If there is no continuity, replace the relay.
(3) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
Page 2382 of 4770
S04971
Ohmmeter1
32 4
No Continuity Battery
Continuity 5Ohmmeter
S05388
No.3 Cooling
Fan Relay
S04970
Ohmmeter
1
32 Continuity
5Ohmmeter
No Continuity
S04969
Ohmmeter
1
32
Continuity 5
Battery CO±34
± COOLING (5S±FE)COOLING FAN RELAY
1608 Author: Date:
(d) Inspect the No.2 cooling fan relay operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is no continu-
ity between terminals 3 and 4
If there is continuity, replace the relay.
(3) Check that there is continuity between terminals 3
and 5.
If there is no continuity, replace the relay.
(e) Reinstall the No.2 cooling fan relay.
(f) Reinstall the relay box cover.
3. INSPECT NO.3 COOLING FAN RELAY
(a) Remove the relay box cover.
(b) Remove the No.3 cooling fan relay. (Marking: FAN NO.3)
(c) Inspect the No.3 cooling fan relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(d) Inspect the No.3 cooling fan relay operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
(e) Reinstall the No.3 cooling fan relay.
(f) Reinstall the relay box cover.
Page 2398 of 4770
CO03N±03
B06399
Radiator
No.1 ECT Switch
No.2 Cooling Fan Connector
Upper Radiator Support Upper Radiator Hose
No.1 Cooling Fan Connector
No.1 ECT Switch Wire Connector Radiator Assembly
Lower Radiator
Support O±Ring
A/T Oil Cooler Hose
Relay Block
(for Daytime Running Light System) No.1 ECT Switch Wire No.1 Cooling FanNo.2 Cooling Fan
Upper Radiator Support
Lower Radiator
Support
Non±reusable part O±Ring Drain PlugLower
Radiator
Hose A/T Oil Cooler Hose
Lower Radiator Hose CO±16
± COOLING (1MZ±FE)RADIATOR
1624 Author: Date:
COMPONENTS
Page 2400 of 4770
CO03O±03
S04725
B05937
Lower
Hose
Oil
Cooler
Hose
CO±18
± COOLING (1MZ±FE)RADIATOR
1626 Author: Date:
REMOVAL
HINT:
At the time of installation, please refer to the following
items.
Start the engine, and check for coolant and A/T fluid
leaks.
Check the A/T fluid level. (See page DI±438)
1. DRAIN ENGINE COOLANT
2. CANADA:
DISCONNECT RELAY BLOCK (FOR DAYTIME
RUNNING LIGHT SYSTEM) FROM BATTERY
HOLD±DOWN CLAMP
3. DISCONNECT UPPER RADIATOR HOSE FROM
RADIATOR
4. DISCONNECT LOWER RADIATOR HOSE FROM
WATER INLET PIPE
5. DISCONNECT A/T OIL COOLER HOSES FROM OIL
COOLER PIPES
6. DISCONNECT NO.1 AND NO.2 COOLING FAN
CONNECTORS
7. DISCONNECT NO.1 ECT SWITCH WIRE CONNECTOR
8. REMOVE RADIATOR AND COOLING FANS
ASSEMBLY
(a) Remove the 2 bolts and 2 upper supports.
Torque: 12.8 N´m (130 kgf´cm, 9 ft´lbf)
(b) Lift out the radiator, and remove the radiator and cooling
fans assembly.
(c) Remove the 2 lower supports.
9. REMOVE A/T OIL COOLER HOSES FROM
RADIATOR
10. REMOVE LOWER RADIATOR HOSE FROM
RADIATOR
Page 2407 of 4770
B05939
CO03S±03
S04727
Disconnect
B05940
B05941
Ammeter
Battery
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
CO±25
1633 Author: Date:
ELECTRIC COOLING FAN
ON±VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION WITH LOW
TEMPERATURE (Below 88°C (190°F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
If not, check the cooling fan relay and ECT switch, and check
for a separated connector or severed wire between the cooling
fan relay and ECT switch.
(c) Disconnect the No.1 ECT switch connector.
(d) Check that the cooling fan rotates.
If not, check the fuses, engine main relay, cooling fan relay,
cooling fan, and check for a short circuit between the cooling
fan relay and ECT switch.
(e) Reconnect the No.1 ECT switch connector.
2. CHECK COOLING FAN OPERATION WITH HIGH
TEMPERATURE (Above 98°C (208°F))
(a) Start the engine, and raise coolant temperature to above
98°C (208°F).
(b) Check that the cooling fan rotates.
If not, replace the No.1 ECT switch.
3. INSPECT NO.1 COOLING FAN
(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: 8.3 ± 11.3 A at 20°C (68°F)
(d) Reconnect the cooling fan connector.
Page 2409 of 4770
CO03T±03
B06400
No.1 Cooling FanNo.1 Cooling Fan Connector
No.1 ECT Switch Connector
No.1 ECT Switch Wire
Relay Block
(for Daytime Running Light System)
Non±reusable part ClipFan
Fan ShroudFan Motor
No.1
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
CO±27
1635 Author: Date:
COMPONENTS
