Operational Check

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

CONDITIONS:
Engine running at normal operating temperature.

Check Blower:

PROCEDURE:
1. Check blower
a. Turn the front fan switch to 1-speed and press any mode switch except OFF.
Blower should operate on 1-speed.
b. Then turn the front fan switch to 2-speed and continue checking blower speed until all four speeds are checked.
c. Leave blower on 4-speed.

Check Discharge Air:

2. Check discharge air
a. Press each mode switch.

Check Discharge Air:

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

Check recirculation:

3. Check recirculation

Check Temperature Decrease:

4. Check temperature decrease
a. Turn the front temperature control switch to full cool.
b. Check for cold air at discharge air outlets.

Check Temperature Increase:

5. Check temperature increase
a. Turn the front temperature control switch to full warm.
b. Check for hot air at discharge air outlets.

Check Air Conditioner Switch:

6. Check air conditioner switch
Turn the front fan switch ON, press the desired mode switch, then press the air conditioner switch to turn ON the air conditioner.
The indicator lamp should come on when air conditioner is ON.
Confirm that the compressor clutch engages.

REAR A/C CONDITIONS:
Engine running at normal operating temperature.

PROCEDURE:

Check Blower:

1. Check blower
a. Set rear fan switch (front) to REAR position.
b. Press any mode switch except OFF.
c. Press air conditioner switch ON.
d. Turn rear fan switch to 1-speed.
Blower should operate on 1-speed.
e. Turn rear fan switch to 2-speed.
f. Continue checking blower speed until all four speeds are checked.

Check Discharge Air:

2. Check discharge air

a. Press the UPPER side of the rear vent switch. The indicator should light. Confirm air flow from the upper rear discharge outlets.

Check Discharge Air:

b. Press the LOWER side of the rear vent switch. The indicator should light. Confirm air flow from the lower rear discharge outlets.

Check Temperature Decrease:

3. Check temperature decrease
a. Turn the rear temperature control switch to full cool.
b. Check for cold air at rear discharge outlets.

Check Temperature Increase:

4. Check temperature increase
a. Turn the rear temperature control switch to full warm.
b. Check for hot air at rear discharge outlets.