Toyota Corolla Quiz
Cooling

Inspection

In this manual: Cooling
Introduction — 31Preparation — 32Service specifications — 19Diagnostics — 497Engine control system — 6Fuel — 13Emission control — 28Exhaust — 3Cooling — 13Lubrication — 7Ignition — 3Starting & charging — 13Front suspension — 12Rear suspension — 9Tire & wheel — 1Drive shaft / propeller shaft — 15Brake — 42Automatic transmission / trans — 47Clutch — 19Steering column — 9Power steering — 11Heater & air conditioner — 20Supplemental restraint system — 27Seat belt — 12Lighting — 18Wiper & washer — 9Audio & visual — 12Wiring — 1Communication system — 1Windshield/windowglass/mirror — 31Seat — 10Theft deterrent & door lock — 10Sliding roof/convertible — 8Engine hood/door — 12Exterior/interior trim — 20Vehicle control system — 1Cruise control — 5Maintenance — 8
11steps
~66min
3/5difficulty
Done 0 of 11
1. Cooling fan relay
Toyota Corolla. Cooling fan relay
  1. Inspect the cooling fan relay continuity.
  2. Using an ohmmeter, check that there is continuity between terminals 1 and 2.

    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.

  4. Apply battery voltage across terminals 1 and 2.
  5. Using an ohmmeter, check that there is continuity between terminals 3 and 5.

    If there is no continuity, replace the relay.

2. Cooling fan relay no.2
Toyota Corolla. Cooling fan relay no.2
  1. Inspect the cooling fan relay continuity.
  2. Using an ohmmeter, check that there is continuity between terminals 1 and 2.

    If there is no continuity, replace the relay.

  3. Using an ohmmeter, check that there is continuity between terminals 3 and 4.

    If there is no continuity, replace the relay.

  4. Check that there is no continuity between terminals 3 and 5.

    If there is continuity, replace the relay.

  5. Apply battery voltage across terminals 1 and 2.
  6. Using an ohmmeter, check that there is continuity between terminals 3 and 5.

    If there is no continuity, replace the relay.

3. Cooling fan resistor
  1. using an ohmmeter, measure the resistance between the terminals.

    Resistance: 1.17 – 1.43 W at 20 c (68 f)

Test yourself

A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.