Toyota Camry

 XV30 (2002–2006) Service Manual

Cooling
Cooling fan system (1MZ−FE/3MZ−FE)

ON−VEHICLE INSPECTION

HINT: The cooling fan may rotate when the ignition switch is turned from ACC to ON. This is normal.

1. CHECK COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 83 C (181 F))

1. Turn the ignition switch ON.

2. Check that the cooling fan stops.

If not, check the cooling fan relay and ECT switches, and check for disconnected connectors or wire breaks between the cooling fan relay and ECT switches.

3.  Disconnect the ECT switch No. 1 connector.

4. Connect the terminals on the ECT switch No. 1 connector.

5. Check that the No. 1 cooling fan rotates at a high speed.

If not, check the No. 1 cooling fan relay and No. 1 cooling fan.

6. Reconnect the ECT switch No. 1 connector.

7.  Disconnect the ECT switch No. 2 connector.

8. Ground the terminal on the ECT switch No. 2 wire harness side connector.

9.  Check that the No. 1 and No. 2 cooling fans rotate at a low speed.

If not, check the No. 2 cooling fan relay, No. 3 cooling fan relay and No. 2 cooling fan.

10. Reconnect the ECT switch No. 2 connector.

2. CHECK COOLING FAN

1. Disconnect the cooling fan connector.

2. Connect battery and ammeter to the cooling fan connector.

3. Check that the cooling fan rotates smoothly, and check the reading on the ammeter.

   Standard amperage: 8.0 to 12.0 A at 20 C (68 F)

If not, replace the cooling fan.

4. Reconnect the cooling fan connector.

INSPECTION

1. INSPECT RELAY (FAN No. 1, FAN No. 3)

a. Check the resistance of the relay.

Standard

:

If the result is not as specified, replace the relay.

2. INSPECT RELAY (FAN No. 2)

a. Check the resistance of the relay.

Standard:

If the result is not as specified, replace the relay.

3. INSPECT ECT SWITCH (No. 1)

a. Check the resistance.

Standard

:

If the result is not as specified, replace the switch.

NOTICE: When checking the ECT in the water, the terminals should be kept dry. After the check dry the .

4. INSPECT ECT SWITCH (No. 2)

a. Check the resistance.

Standard

:

If the result is not as specified, replace the switch.

NOTICE: When checking the ECT in the water, the terminals should be kept dry. After the check dry the .

Cooling system (2AZ−FE)(From July, 2003)

Water pump assy (2AZ−FE)(From July, 2003)

Thermostat (2AZ−FE)(From July, 2003)

Radiator assy (2AZ−FE)(From July, 2003)

Cooling system (2AZ−FE)(From July, 2003)

Cooling system (1MZ−FE/3MZ−FE)

Cooling fan system (1MZ−FE/3MZ−FE)

Coolant (1MZ−FE/3MZ−FE)

Water pump assy (1MZ−FE/3MZ−FE)

Thermostat (1MZ−FE/3MZ−FE)

Radiator assy (1MZ−FE/3MZ−FE)

Cooling fan system (2AZ−FE)(From July, 2003)

Coolant (2AZ−FE)(From July, 2003)

Water pump assy (2AZ−FE)(From July, 2003)