Toyota Corolla (E120): On–vehicle inspection

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.

Hint

: if not, check the cooling fan relay and water temperature sensor, and check for separated connector or severed wire between the cooling fan relay and water temperature sensor.

  1.  disconnect the water temperature sensor connector.
  2. 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 water temperature sensor.

  3.  reconnect the water temperature sensor connector.

2. Check cooling fan operation with high temperature (above 93 c (199 f))

  1.  start the engine, and raise coolant temperature to above 93 c (199 f).

Hint

: coolant temperature is the detected value by the water temperature sensor on the water outlet.

  1.  check that the cooling fan rotates.

Hint

: if not, replace the water temperature sensor.

3. Inspect cooling fan

  1.  disconnect the cooling fan connector.
  2.  connect battery and ammeter to the connector.
  3.  check that the cooling fan rotates smoothly, and check the reading on the ammeter.

    Standard amperage:
    approx. 8.0 – 12.0 A at 20 c (68 f)

  4.  reconnect the cooling fan connector.
    Share this page:

    Other materials:

    Adjustment
    Hint: in the rh side, work in the same procedure as in the lh side. Since the centering bolt is used as a door side hinge bolt, the door hinge cannot be adjusted with it on. Substitute the bolt with washer for the centering bolt. 1. Inspect front door panel sub–assy lh Che ...

    Circuit description
    The door key lock and unlock switch is built in the door lock motor. Wiring diagram Inspection procedure 1 Check door lock 2 Check wire harness (tvip ecu  door lock) Disconnect the tvip ecu and door lock connectors.  check the continuity between the terminals of the t ...

    Terminals of ecu
    1. Inspect integration relay Disconnect the connector from the integration relay. check the continuity between each terminal of the disconnected connector and the body ground, as shown in the illustration and table. Standard: If the result is not as specified, the vehicle’s ...