Toyota Corolla (E120) 2002–2008 Repair Manual / Cooling / Cooling fan system / On–vehicle inspection
Toyota Corolla (E120): On–vehicle inspection
1. Check cooling fan operation with low temperature (below 83 c (181 f))
- Turn the ignition switch on.
- 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.
- disconnect the water temperature sensor connector.
- 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.
- reconnect the water temperature sensor connector.
2. Check cooling fan operation with high temperature (above 93 c (199 f))
- 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.
- check that the cooling fan rotates.
Hint
: if not, replace the water temperature sensor.
3. Inspect cooling fan
- disconnect the cooling fan connector.
- connect battery and ammeter to the connector.
- 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) - reconnect the cooling fan connector.
Other materials:
System description
The ecm uses the signals from the throttle position sensor, air–flow meter
and crankshaft position sensor
to monitor the engagement condition of the lock–up clutch.
Then the ecm compares the engagement condition of the lock–up clutch with the
lock–up schedule in the
ecm memory to de ...
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed , consider each of the following points:
The engine will not start even though the starter motor operates normally.
One of the following may be the cause of the problem:
● There may not be sufficient f ...
Inspection procedure
1 Inspect skid control ecu connector(+bs terminal voltage)
Disconnect the skid control ecu connector.
measure the voltage between terminals +bs (2) and gnd
(1, 23) of skid control ecu harness side connector.
Voltage: 10 – 14 v
2 Reconfirm dtc
Check the dtc .
Ok :
...