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:
On–vehicle inspection
1. Inspect drive belt
Visually check the belt for excessive wear, frayed cords,
etc.
If any defect is found, replace the drive belt.
Hint:
cracks on the rib side of a belt are considered acceptable. If the
missing chunks from the ribs are found on the belt, it should be
replaced.
2 ...
Turning on light switch does not light up night time
illumination of radio receiver
Wiring diagram
Inspection procedure
1 Inspect radio receiver assy(ill+, ill–)
Check that the voltage between terminals at each condition,
as shown in the chart.
Standard:
Repair or replace harness or connector ...
Communication system
Horn system
Location
Problem symptoms table
Inspection
1. Inspect low pitched horn assy
Connect the positive (+) lead from the battery to the terminal
and the negative (–) lead to the horn body, and check
that the horn blows.
If the result is not as specified, replace the ...