TOYOTA CAMRY 2000 Service Repair Manual

CO03U±03
B05943
B05944
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
CO±29
1637 Author: Date:
REMOVAL
1. REMOVE NO.1 COOLING FAN
(a) Canada:
Disconnect the relay block (for daytime running light sys-
tem) from the battery hold±down clamp.
(b) Disconnect the cooling fan connector.
(c) Disconnect the No.1 ECT switch wire connector.
(d) Disconnect the No.1 ECT switch wire clamps.
(e) Remove the 2 bolts and cooling fan.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)
2. REMOVE NO.2 COOLING FAN
(a) Drain the engine coolant.
(b) Disconnect the upper radiator hose from the radiator.
(c) Disconnect the cooling fan connector.
(d) Remove the 3 bolts and cooling fan.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)

CO03V±03
B05945
Protrusion
S04584
S04587
B05946
Protrusion
CO±30
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
1638 Author: Date:
DISASSEMBLY
1. REMOVE NO.1 COOLING FAN
(a) Remove the clip and fan.
NOTICE:
When removing the clip and fan, do not apply too much
force to the motor shaft. And do not scratch the motor
shaft.
HINT:
At the time of installation, please refer to the following items.
Install a new clip from the side opposite the protrusion on the
fan.
(b) Disconnect the lead wire from the fan shroud.
(c) Remove the 3 screws and fan motor.
2. REMOVE NO.2 COOLING FAN
(a) Remove the clip and fan.
NOTICE:
When removing the clip and fan, do not apply too much
force to the motor shaft. And do not scratch the motor
shaft.
HINT:
At the time of installation, please refer to the following items.
Install a new clip from the side opposite the protrusion on the
fan.

S04585
S04586
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
CO±31
1639 Author: Date:
(b) Disconnect the lead wire from the fan shroud.
(c) Remove the 3 screws and fan motor.

CO03W±01
CO±32
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
1640 Author: Date:
REASSEMBLY
Reassembly is in the reverse order of disassembly. (See page CO±30)

CO03X±01
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
CO±33
1641 Author: Date:
INSTALLATION
Installation is in the reverse order of removal. (See page CO±29)

CO03Y±04
S04602No.1 ECT Switch
P01924
Ohmmeter
S04601
No.2 ECT
Switch
P06722
Ohmmeter CO±34
± COOLING (1MZ±FE)ENGINE COOLANT TEMPERATURE (ECT) SWITCH
1642 Author: Date:
ENGINE COOLANT
TEMPERATURE (ECT) SWITCH
INSPECTION
1. DRAIN ENGINE COOLANT
2. INSPECT NO.1 ECT SWITCH
(a) Remove the No.1 ECT switch.
(b) Inspect the No.1 ECT switch.
(1) Using an ohmmeter, check that there is no continu-
ity between the terminals when the coolant temper-
ature is above 98°C (208°F).
If there is continuity, replace the switch.
(2) Check that there is continuity, between the termi-
nals when the coolant temperature is below 88°C
(190°F).
If there is no continuity, replace the switch.
(c) Reinstall the No.1 ECT switch.
3. INSPECT NO.2 ECT SWITCH
(a) Remove the No.2 ECT switch.
(b) Inspect the No.2 ECT switch.
(1) Using an ohmmeter, check that there is continuity
between terminals when the coolant temperature is
above 94°C (201°F).
If there is no continuity, replace the switch.
(2) Check that there is no continuity between the termi-
nals when the coolant temperature is below 83°C
(181°F).
If there is continuity, replace the switch.
(c) Reinstall the No.2 ECT switch.

± COOLING (1MZ±FE)ENGINE COOLANT TEMPERATURE (ECT) SWITCH
CO±35
1643 Author: Date:
4. REFILL ENGINE COOLANT
5. START ENGINE AND CHECK FOR COOLANT LEAKS

S05391
Engine
Main Relay
CO03Z±03
S04974
Ohmmeter
1
Continuity OhmmeterOhmmeter Continuity
No
Continuity 2
5
43
S04973
Ohmmeter
1
Ohmmeter
Continuity No
Continuity
2
5
43
Battery CO±36
± COOLING (1MZ±FE)ENGINE MAIN RELAY
1644 Author: Date:
ENGINE MAIN RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE ENGINE MAIN RELAY
(Marking: ENGINE MAIN)
3. INSPECT RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.
If there is no continuity, replace the relay.
(b) Check that there is continuity between terminals 2 and 4.
If there is no continuity, replace the relay.
(c) Check that there is no continuity between terminals 1 and
2.
If there is continuity, replace the relay.
4. INSPECT RELAY OPERATION
(a) Apply battery positive voltage across terminals 3 and 5.
(b) Using an ohmmeter, check that there is no continuity be-
tween terminals 2 and 4.
If there is continuity, replace the relay.
(c) Check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.
5. REINSTALL ENGINE MAIN RELAY
6. REINSTALL RELAY BOX COVER

S05390
No.1 Cooling
Fan Relay
CO040±03
S04975
Ohmmeter
ContinuityContinuity
Ohmmeter 1
3
24
S04976
Ohmmeter
No Continuity
1
3
24
Battery
S05387
No.2 Cooling
Fan Relay
S04972
Ohmmeter
Ohmmeter Ohmmeter
No Continuity 1
32 4
5
Continuity
± COOLING (1MZ±FE)COOLING FAN RELAY
CO±37
1645 Author: Date:
COOLING FAN RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. INSPECT NO.1 COOLING FAN RELAY
(a) Remove the No.1 cooling fan relay. (Marking: FAN NO.1)
(b) 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.
(c) 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.
(d) Reinstall the No.1 cooling fan relay.
3. INSPECT NO.2 COOLING FAN RELAY
(a) Remove the No.2 cooling fan relay. (Marking: FAN NO.2)
(b) 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.

S04971
OhmmeterBattery
No ContinuityOhmmeter
Continuity 1
32 4
5
S05388
No.3 Cooling
Fan Relay
S04970
Ohmmeter
No ContinuityOhmmeter
1
32
5 Continuity
S04969
Ohmmeter
1
32
5
Continuity Battery CO±38
± COOLING (1MZ±FE)COOLING FAN RELAY
1646 Author: Date:
(c) 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.
(d) Reinstall the No.2 cooling fan relay.
4. INSPECT NO.3 COOLING FAN RELAY
(a) Remove the No.3 cooling fan relay. (Marking: FAN NO.3)
(b) 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 mo continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(c) 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.
(d) Reinstall the No.3 cooling fan relay.
5. REINSTALL RELAY BOX COVER