Toyota Corolla (E120): Inspection
1. Cooler thermistor no.1

- Check resistance between terminals 1 and 2 of cooler
thermistor no. 1 At each temperature, as shown in the
chart.
Resistance:

If resistance value is not as specified, replace the sensor.
2. Cooler and accessory assy

- Inspect blower switch continuity.

If continuity is not as specified, replace the air conditioner control assy.
- inspect illumination operation.
Connect the positive (+) lead from the battery to terminal 2 and negative (–) lead to terminal 3 then check that the illuminations light up.
If there is bulb not light up, replace the bulb.
3. Cooler switch hole cover

- Inspect switch continuity.
Check the continuity between terminals while switch is pressed, as shown in the chart.

If continuity is not as specified, replace the cooler switch.
- inspect illumination operation.
Connect the positive (+) lead from the battery to terminal 4 and negative (–) lead to terminal 3 then check that the illuminations light up.
If operation is not as specified, replace the cooler switch.
- inspect indicator operation.
- Connect the positive (+) lead from the battery to terminal 2 and the negative (–) lead to terminal 1.
- Push the a/c button in and then check that the indicator lights up.
If operation is not as specified, replace the cooler switch.
- inspect dimming operation
- connect the positive (+) lead from the battery to terminal 2 and the negative (–) lead to terminal 1 while press the switch.
- Connect the positive (+) lead from battery to terminal 4 and then check that the indicator dims.
If operation is not as specified, replace the cooler switch.
4. Blower resistor

- Measure resistance between terminals, as shown in the chart below.

If resistance is not as specified, replace the blower resistor.
5. Blower w/fan motor sub–assy

- Connect the positive (+) lead from the battery to terminal 2 and negative (–) to terminal 1, then check that the motor operation smoothly.
If operation is not as specified, replace the blower motor.
6. Heater blower motor relay assy


If continuity is not as specified, replace the heater blower motor relay.
7. Magnet–clutch relay


If continuity is not as specified, replace the magnet–clutch relay.
Other materials:
Emergency Driving Stop System
The emergency driving stop
system is a system which
automatically decelerates
and stops the vehicle within
its lane if the driver
becomes unable to continue
driving the vehicle, such as
if they have suffered a medical
emergency, etc.
During LTA (Lane Tracing
Assist) control, if the system
does not ...
If a warning light turns on or a
warning buzzer sounds
Calmly perform the following actions if any of the warning
lights comes on or flashes. If a light comes on or flashes, but
then goes off, this does not necessarily indicate a malfunction
in the system. However, if this continues to occur, have the
vehicle inspected by your Toyota dealer.
Actions to ...
Supplemental restraint system
Preparation
Sst
Recomended tools
Equipment
...


