ON-BOARD DIAGNOSTIC FUNCTION

id070200100300

Malfunction Detection Function

• Detects malfunctions in the ambient temperature sensor, cabin temperature sensor, solar radiation sensor, evaporator temperature sensor, and air mix actuator. If a malfunction is detected, the A/C switch illuminates.

Door Position Check Function

• Detects malfunctions in the mode actuator and the intake actuator. If a malfunction is detected, the recirculate switch or the rear defroster switch illuminates. If there is no malfunction, the A/C switch illuminates.

Operation Check Function

• The climate control unit forces operation of output related moving parts according to the operation check table regardless of input related parts. (Operation changes according to the mode dial position.) A malfunctioning part can be determined by verifying that each transition is as indicated in the operation check table through visual inspection, listening to the operation sound, or placing a hand on the air vent.

Operation Check Table

| MODE DIAL POSITION
--- | ---
AUTO | OPEN VENT | BI-LEVEL | OPEN/HEAT | VENT | HEAT | DEF/HEAT | DEFROSTER
MODE DOOR | OPEN VENT | OPEN VENT | BI-LEVEL | OPEN VENT | VENT | HEAT | DEF/HEAT | DEFROSTER
AIR INTAKE DOOR | REC | REC | FRESH | REC | REC | FRESH | FRESH | FRESH
AIR MIX DOOR | MAX COLD | MAX COLD | MAX HOT | MAX COLD | MAX COLD | MAX HOT | MAX HOT | MAX HOT
BLOWER MOTOR | 4.5± 2 V | 4.5± 2 V | 10.5± 2 V | 4.5± 2 V | 10.5± 2 V | 8.5± 2 V | 8.5± 2 V | B+
A/C COMPRESSOR | OFF | ON | OFF | ON | OFF | ON | ON | ON