Operational Check (Rear)

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

Conditions : Engine running and at normal operating temperature

CHECKING BLOWER




1. Turn the rear blower control dial to switch position "1". Blower should operate on low speed.
2. Turn the rear blower control dial counterclockwise to switch position "2", "3", and "4" until all speeds are checked.
3. Leave blower on MAX speed.
If NG, go to trouble diagnosis procedure for ATC-102, "Rear Blower Motor Circuit". Rear Blower Motor Circuit
If OK, continue the check.

CHECKING TEMPERATURE DECREASE




1. Rotate temperature and mode dial fully counterclockwise.
2. Check for cold air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation if OK, go to trouble diagnosis procedure for ATC-122, "Insufficient Cooling". Insufficient Cooling (Performance Test) If air mix door motor appears to be malfunctioning, go to ATC-80, "DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (REAR)". Air Mix Door Motor Circuit
If OK, continue the check.

CHECKING TEMPERATURE INCREASE




1. Rotate temperature and mode dial clockwise.
2. Check for hot air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for ATC-129, "Insufficient Heating". Insufficient Heating If air mix door motor appears to be malfunctioning, go to ATC-80, "DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (REAR)". Air Mix Door Motor Circuit
If OK, continue the check.