Toyota Corolla (E120) 2002–2008 Repair Manual / Heater & air conditioner / Air conditioning system / On–vehicle inspection
Toyota Corolla (E120): On–vehicle inspection
1. Inspect pressure switch no.1.

- Magnetic clutch control: inspect pressure switch operation.
- Set on the manifold gauge set.
- Connect the positive (+) lead from the ohmmeter to terminal 4 and the negative (–) lead to terminal 1.
- Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.
If operation is not as specified, replace the pressure switch.

- Cooling fan control: inspect pressure switch operation.
- Connect the positive (+) lead from the ohmmeter to terminal 2 and the negative (–) lead to terminal 3.
- Check continuity between terminals when refrigerant pressure is changed, as shown in the illustration.
If operation is not as specified, replace the pressure switch.
2. Cooler compressor assy w/magnetic clutch
- connect the positive (+) lead from the battery to terminal and the negative (–) lead to the body ground.
- check that the magnetic clutch energized.
If operation is not as specified, replace the magnet clutch assy.
Other materials:
Changing audio source
1 Press the “AUDIO” button to display the audio source selection screen.
If the audio source selection screen is not displayed, press the “AUDIO” button
again.
2 Select the desired audio source.
1 Select the desired audio source then
or
to reorder.
...
Using the radio
Radio operation
Select “AM” or “FM” to begin listening to the radio.
1 Power
2 Volume
3 Station selectors
4 Adjust frequency or select an item
5 AM/FM mode button
6 Scan for receivable stations
7 Seek a frequency
Setting station presets
1Search for a desired station by turning
...
Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button
assy)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the airbag sensor
assy center and the horn button assy.
for the oran ...


