Operational Check

The purpose of the operational check is to confirm that the system operates properly.

CONDITIONS:
^ Engine running and at normal operating temperature.

Check Blower:

PROCEDURE:
1. Check blower

Check Discharge Air:

2. Check discharge air
a. Press mode switch four times and DEF button.

Check Discharge Air:

b. Confirm that discharge air comes out according to the air distribution table at left.
Refer to "Discharge Air Flow." Description and Operation

Check Recirculation:

3. Check recirculation

Check Temperature Decrease:

4. Check temperature decrease
a. Press the temperature decrease button until 18° C (65° F) is displayed.
b. Check for cold air at discharge air outlets.

Check Temperature Increase:

5. Check temperature increase
a. Press the temperature increase button until 32° C (85° F) is displayed.
b. Check for hot air at discharge air outlets.

Check ECON (Economy) Mode:

6. Check ECON (ECONOMY) mode
a. Press ECON switch.
b. Display should indicate ECON (no AUTO, no MANUAL).
Confirm that the compressor clutch is not engaged (visual inspection).
(Discharge air will depend on ambient, in-vehicle, and set temperatures).

Check AUTO Mode:

7. Check AUTO mode
a. Press AUTO switch.
b. Display should indicate AUTO (no ECON, no MANUAL).
Confirm that the compressor clutch engages (audio or visual inspection).
(Discharge air will depend on ambient, in-vehicle, and set temperatures).

Check Memory Function:

8. Check memory function
a. Press OFF switch.
b. Turn the ignition OFF.
c. Turn the ignition ON.
d. Press the AUTO switch.
e. Confirm that the set temperature remains at previous temperature.