Operational Check

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

After operational check is completed, go to SYMPTOM TABLE in
How to Perform Trouble Diagnoses for Quick and Accurate Repair.

CONDITIONS:
^ Engine running and at normal operating temperature.

PROCEDURE:





1. Check blower
a. Slide fan control lever to 1-speed.
Blower should operate on 1-speed.
b. Then slide fan control lever to 2-speed, and continue checking blower speed until all speeds are checked.
c. Leave blower on 4-speed.





2. Check discharge air
a. Turn mode switch to each mode.
b. Confirm that air discharge comes out each mode.





NOTE: Confirm that discharge air comes out according to the air distribution table at left.





3. Check recirculation
a. Slide REC control lever to REC position.
b. Listen for intake door position to change (you should hear blower sound change slightly).





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





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





6. Check air conditioner switch
Slide the fan control lever to the desired (1 to 4 speed) position and push the A/C switch to turn ON the air conditioner. The indicator lamp should come on when air conditioner is ON.