Operational Check

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

CONDITIONS:
- Engine running and at normal operating temperature.

PROCEDURE:





1. Check blower
a. Rotate the front fan switch up and check for blower operation. (Fan symbol lit in display screen).
b. Continue checking that blower speed increases as the front fan switch is rotated up.
c. Leave blower on MAX speed.

2. Check discharge air





a. Press each mode switch.





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

NOTE: Confirm that the compressor clutch is engaged (visual inspection) and intake door position is at FRESH when the DEF mode is selected.
Confirm that intake door position is at FRESH when the F/D mode is selected.
Intake door position is checked in the next step.





3. Check recirculation
a. Press REC switch.
Recirculation indicator should illuminate.
b. Listen for intake door position change (you should hear blower sound change slightly).

NOTE: REC does not operate in DEF and F/D modes.





4. Check temperature decrease
a. Press the temperature control switch until 15°C (60°F) is displayed.
b. Check for cold air at discharge air outlets.





5. Check temperature increase
a. Press the temperature control switch until 32°C (90°F) is displayed.
b. Check for hot air at discharge air outlets.





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





7. 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.

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

PROCEDURE:





1. Check blower
a. Set rear fan switch (front) to REAR position.
b. Press any mode switch except OFF.
c. Press A/C 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.

2. Check discharge air





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





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





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





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