Heater System: Other Kia Sephia II

BLOWER MOTOR

Blower motor speed is controlled by blower switch and resistor assembly in the blower unit. When blower switch is in the OFF position, the motor ground circuit is open and the blower motor does not operate.

When switch is in the first position, current flow from the blower motor is restricted by the 3 resistors in the resistor assembly, and the blower turns at a low speed. Changing blower switch to the second, third or fourth positions causes the circuit resistance to decrease, and the blower motor speed increases.

TEMPERATURE CONTROL KNOB

Air temperature is controlled by rotating control knob counterclockwise for cold or clockwise for hot. Air temperature control knob is located on passenger-side of climate (heater) control panel.

AIR INTAKE CONTROL SWITCH

Air intake control switch controls the fresh/recirculation actuator and door position. Under normal conditions, the switch should be kept in the fresh air position. When air intake control switch is depressed to recirculated air position the switch indicator light will be illuminated. When switch indicator light is not illuminated, air intake door is in fresh (outside) air position.

Fresh Air Position

When air intake control switch is in fresh (outside) air position, air is directed into heater system from outside vehicle. This position is used for normal ventilation and heating.

Recirculated Air Position

When air intake control switch is in recirculated air position, indicator is illuminated and outside airflow is shut off. Air within the passenger compartment is recirculated to achieve maximum heating and to prevent undesirable outside air from entering vehicle.

Face Position

Airflow is directed toward face of passengers through all 4 center instrument panel vents. Each vent has an individual control that can be used to direct the air discharged from vent.

Face-Floor Position

In this position, air is directed toward face and floor. The air flowing to floor is warmer than air directed toward face (except when temperature control lever is set to extreme cold position). Only the temperature of the air being discharged from the floor outlet can be controlled.

Floor Position

Most of the airflow is delivered to floor, with a small amount being delivered to windshield and side window defrosters.

Floor-Defrost Position

In this position, most of the airflow is directed to floor and windshield. A small amount of airflow is directed to side window defrosters.

Defrost Position

Most of the airflow is directed to the windshield, with a small amount of air delivered to side window defrosters.

Disconnect blower motor 2-pin connector (located at blower motor, under instrument panel). Using jumper wires, connect battery voltage to blower motor connector terminal No. 2 (Red/White wire) and ground terminal No. 1 (Green/Yellow wire). Replace blower motor if it does not operate.

BLOWER MOTOR CIRCUIT

1. Ensure blower motor operates properly. See «BLOWER MOTOR»(ref-301-S40927152002000030800000). Check BLOWER fuse (25-amp) located in engine compartment fuse/relay box. If fuse is open, check blower motor circuits for a short. Repair as necessary and replace fuse. If fuse is okay, go to next step.
2. Disconnect blower motor relay. Check for continuity between relay terminals No. 1 and 3, and between terminals No. 2 and 4. (Scheme 3) Continuity should not exist between relay terminals No. 1 and No. 3. There should be continuity between relay terminals No. 2 and 4. Using jumper wires, connect battery voltage to relay terminal No. 2 and ground terminal No. 4. Continuity should exist between relay terminals No. 1 and 3. If continuity is not as specified, replace blower motor relay. If continuity is as specified, go to next step.
3. Turn ignition on. Turn blower motor switch off. Locate blower motor connector (at blower motor, on heater housing). Backprobe blower motor connector terminal No. 2 (Red/White wire) and measure voltage. If 12 volts is present, go to next step. If 12 volts is not present, repair or replace wiring harness between BLOWER fuse (25-amp) and blower motor.
4. Turn ignition on. Turn blower motor switch off and A/C switch off (if equipped). Locate blower motor resistor 4-pin connector (next to blower motor, on heater case). Backprobe blower motor resistor 4-pin connector terminal No. 4 (Green/Yellow wire) and measure voltage. If 12 volts is present, go to next step. If 12 volts is not present, repair open in Green/Yellow wire between blower motor resistor and blower motor.
5. Backprobe blower motor resistor 4-pin connector and measure voltage at terminals No. 1 (Green/Red wire), No. 2 (Green/White wire) and No. 3 (Green/Orange wire). If 12 volts is present at all terminals, go to next step. If 12 volts is not present, replace blower motor resistor.
6. Turn ignition on. Turn blower motor switch off. Locate blower motor switch 6-pin connector behind climate control panel. (Scheme 4) Backprobe blower motor switch 6-pin connector terminal No. 4 (Green/Yellow wire) and measure voltage. If 12 volts is present, go to next step. If 12 volts is not present, repair open in Green/Yellow wire between blower motor resistor and blower motor switch.
7. Backprobe blower motor switch 6-pin connector terminal No. 1 (Green/White wire) and measure voltage. See «WIRING DIAGRAMS»(ref-301-S28449097682000030800000). If 12 volts is present, go to next step. If 12 volts is not present, repair open in Green/White wire between blower motor resistor and blower motor switch.
8. Backprobe blower motor switch 6-pin connector terminal No. 5 (Green/Red wire) and measure voltage. If 12 volts is present, go to next step. If 12 volts is not present, repair open in Green/Red wire between blower motor resistor and blower motor switch.
9. Backprobe blower motor switch 6-pin connector terminal No. 6 (Green/Orange wire) and measure voltage. If 12 volts is present, go to next step. If 12 volts is not present, repair open in Green/Orange wire between blower motor resistor and blower motor switch.
10. Turn ignition off. Turn blower motor switch off. Locate blower motor switch 6-pin connector behind climate control panel. (Scheme 4) Backprobe blower motor switch 6-pin connector and check for continuity between terminal No. 3 (Black wire) and ground. If continuity exists, go to next step. If continuity does not exist, repair open in Black wire between blower motor switch and ground connection.
11. Turn ignition on. Turn A/C switch off (if equipped). Locate blower motor switch 6-pin connector behind climate control panel. (Scheme 4) Turn blower motor switch to low position. Backprobe blower motor switch 6-pin connector terminal No. 6 (Green/Orange wire). Measure voltage between blower motor switch and blower motor connector terminal No. 1 (Green/Yellow wire). If 12 volts is present, go to next step. If 12 volts is not present, replace blower motor switch.
12. Turn blower motor switch to medium-low position. Backprobe blower motor switch 6-pin connector terminal No. 5 (Green/Red wire). Measure voltage between blower motor switch and blower motor connector terminal No. 1 (Green/Yellow wire). If 12 volts is present, go to next step. If 12 volts is not present, replace blower motor switch.
13. Turn blower motor switch to medium-high position. Backprobe blower motor switch 6-pin connector terminal No. 1 (Green/White wire). Measure voltage between blower motor switch and blower motor connector terminal No. 1 (Green/Yellow wire). If 12 volts is present, go to next step. If 12 volts is not present, replace blower motor switch.
14. Turn blower motor switch to high position. Backprobe blower motor switch 6-pin connector terminal No. 4 (Green/Yellow wire) voltage. If 12 volts is present, go to «BLOWER MOTOR SWITCH»(ref-301-S26875651332000030800000). If 12 volts is not present, replace blower motor switch.

Scheme 3

Scheme 4

BLOWER MOTOR RESISTOR

1. Locate blower motor resistor (on underside of heater case, next to blower motor). Disconnect wiring harness from blower motor resistor. Ensure continuity exists between resistor terminal No. 4 and terminals No. 1, 2 and 3. If continuity exists, go to next step. If continuity does not exist, replace blower motor resistor.
2. Measure resistance between blower motor resistor terminals. See «WIRING DIAGRAMS»(ref-301-S28449097682000030800000) . Resistance between terminals No. 1 and 2 should be 0.52-0.58 ohms. Resistance between terminals No. 1 and 3 should be 0.92-1.02 ohms. Resistance between terminals No. 2 and 4 should be 0.33-0.37 ohms. If resistance is not as specified, replace blower motor resistor.

BLOWER MOTOR SWITCH

Check blower motor switch continuity between specified terminals. (Scheme 4) When blower motor switch is in OFF position, continuity should not exist between any terminals. Replace blower motor switch if continuity is not as specified. See BLOWER SWITCH CONTINUITY table.

BLOWER SWITCH CONTINUITY

INSTRUMENT PANEL