Toyota Corolla (E120) 2002–2008 Repair Manual / Heater & air conditioner / Heater control & accessory assy
Toyota Corolla (E120): Heater control & accessory assy
Replacement
1. Remove console panel upper
2. Remove instrument cluster finish panel
3. Remove heater control & accessory assy

- Release the 2 fitting claws and pull out the heater control & accessory assy.

- Using a screwdriver, open the claw of the cable clamp and disconnect the defroster damper control cable.
Notice
:
- be careful not to bend the cable wire.
- If the cable wire bends, the heater control & accessory assy operationality becomes worse.
Hint
: tape the screwdriver tip before use.

- Using a screwdriver, open the claw of the cable clamp and disconnect the air mix damper control cable.
Notice
:
- be careful not to bend the cable wire.
- If the cable wire bends, the heater control & accessory assy operationality becomes worse.
Hint
: tape the screwdriver tip before use.
- disconnect the connector, remove the heater control & accessory assy.
4. Install heater control & accessory assy

- Install the inner cable end of the air mix damper control cable to the heater control lever.
- install the outer cable of the air mix damper control cable to the cable clamp.
Notice
:
- be careful not to bend the cable wire.
- If the cable wire bends, the heater control & accessory assy operationality becomes worse.
Hint
:
- operating the heater control knob and check that it properly stops at both ends of max. Cool and max. Hot and no recoil is identified.
- Check that the outer cable should not be disengaged (moved) from the heater control & accessory assy when the cable is pulled.

- Install the inner cable end of the defroster damper control cable to the heater control lever.
- install the outer cable of the defroster damper control cable to the cable clamp.
Notice
:
- be careful not to bend the cable wire.
- If the cable wire bends, the heater control & accessory assy operationality becomes worse.
Hint
:
- operating the heater control knob and check that it properly stops at both ends of face and def and no recoil is identified.
- Check that the outer cable should not be disengaged (moved) from the heater control & accessory assy when the cable is pulled.
- connect the connector, install the heater control & accessory assy.
Other materials:
Continuously variable transmission
(vehicles without paddle
shift switches)
Select the shift position
depending on your purpose
and situation.
Shift position purpose
and functions
P - Parking the vehicle/
starting the engine
R - Reversing
N - Neutral
(Condition in which the
power is not transmitted)
D - Normal driving*
B - Applying moderate
engine braking driving
down hills ...
Terminals of ecu
Oscilloscope wave (*1)
Hint:
terminal: od – gnd
gauge set: 5 v / div, 50 ms / div
condition: during cruise control driving o/d switch on.
...
Inspection procedure
1 Inspect parking brake switch circuit
Check for open and short circuit in parking brake switch circuit
2 Inspect brake fluid level warning switch circuit
Check the brake fluid level in reservoir.
check for open and shot circuit in brake fluid level warning
switch circuit
...


