2007 KIA CARNIVAL heater motor

2007 > 2.7L V6 GASOLINE >
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Before replacing or repairing air conditioning components, first determine if the malfunction is due to the refrigerant
charge, air flow or compressor.
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of
the problem. Check each part in order. If necessary, replace these parts.
After correcting the malfunction, check the complete system to ensure that performance is satisfactory.
STANDARD:
Symptom Suspect Area See page
No blower operation 1. Blower fuse
2. Blower relay
3. Blower motor
4. Power mosfet
5. Blower speed control switch
6. Wire harness
No air temperature control 1. Engine coolant capacity
2. Heater control assembly
No compressor operation 1. Refrigerant capacity
2. A/C Fuse
3. Magnetic clutch
4. Compressor
5. Dual pressure switch
6. A/C switch
7. Evaporator temperature sensor
8. Wire harness
No cool comes out 1. Refrigerant capacity
2. Refrigerant pressure
3. Drive belt
4. Magnetic clutch
5. Compressor
6. Dual pressure switch
7. Evaporator temperature sensor
8. A/C switch
9. Heater control assembly
10. Wire harness
Insufficient cooling 1. Refrigerant capacity
2. Drive belt
3. Magnetic clutch
4. Compressor
5. Condenser
6. Expansion valve
7. Evaporator
8. Refrigerant lines
9. Dual pressure switch
10. Heater control assembly
No engine idle - up when A/C switch
ON 1. Engine ECM
2. Wire harness
No air inlet control 1. Heater control assembly
No mode control 1. Heater control assembly
2. Mode actuator
No cooling fan operation 1. Cooling fan fuse
2. Fan motor
3. Engine ECM
4. Wire harness

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
1.In- car air temperature sensor is located at the center facia lower panel.
2. The sensor contains a thermistor which measures the temperature of the inside. The signal decided by the
resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit
and according to this signal the control unit regulates incar temperature to intended value.
3. It perceives the inside temperature, changes the resistance value, and enters the corresponding voltage into the
automatic temperature control module.
4. It will used for discharge temperature control, sensor failsafe, temperature door control, blower motor level control,
and A/C auto control.

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
1.Water temperature sensor is located at the heater unit.
2. It detects coolant temperature. Its signal is used for cold engine lockout control. When the driver operates the
heater before the engine is warmed up, the signal from sensor causes the heater control unit to reduce blower
motor speed until coolant temperature reaches the threshold value.

2007 > 2.7L V6 GASOLINE >
REPLACEMENT
1.Disconnect the negative ( - ) battery terminal.
2. Remove the crush pad.(Refer to BD group)
3. Disconnect the connectors from the intake actuator, the blower motor and power mosfet.
4. Remove the cowl cross bar assembly.(Refer to BD group)
5. Remove the blower unit (A) from the heater unit after loosening a mounting bolt and 2 screws.
Make sure that there is no air leaking out of the blower and duct joints.
6. Installation is the reverse order of removal.

2007 > 2.7L V6 GASOLINE >
INSPECTION
1.Ignition "ON"
2. Manually operate the control switch and measure the voltage of blower motor between pin 1 and 2.
3. Select the control switch to raise voltage until high speed.
Specification
Fan Motor Voltage
Manual
First speed 4.0 ±0.5V
Second speed 5.1 ±0.5V
Third speed 6.2 ±0.5V
Fourth speed 7.3 ±0.5V
Fifth speed 8.4 ±0.5V
Sixth speed 9.5 ±0.5V
Seventh speed 10.5 ±0.5V
eighth speed Battary(+)
*AUTO COOLING: Auto speed (4.5V~B+)
*AUTO HEATING: Auto speed (4.5V~10.5V)
4. If the measured voltage is not specification, substitute with a known- good power mosfet and check for proper
operation.
5. If the problem is corrected, replace the power mosfet.
REPLACEMENT
1.Disconnect the negative ( - ) battery terminal.
2. Disconnect the power mosfet connector (A) at the connecting part between heater and blower unit.
3. Remove the power mosfet (B) after loosening the mounting screws.

2007 > 2.7L V6 GASOLINE >
REPLACEMENT
1.Disconnect the negative ( - ) battery terminal.
2. Remove the seat cushion (A) (Refer to Body group - front seat)
3.Remove the seat heater module (B) after removing seat heater module mounting screw (2EA) and connector from
rear height motor (A).
4.Installation is the reverse of removal.