Blower System: Other Kia Carnival III

Rear Blower

1. There should be continuity between the No. 4 pin in the A and No. 12 pin in the B terminals when power and ground are connected to the No. 2 pin and No. 14 pin in the A terminals. (Passenger compartment relay box)
2. There should be to no continuity between the No. 4 pin in the A and No. 12 pin in the B terminals when power is disconnected.

Scheme 64

Scheme 65

1. Disconnect the negative (-) battery terminal.
2. Remove the crash pad center lower side cover. Refer to LOWER CRASH PAD PANEL REPLACEMENT .
3. Loosen the relate box mounting nut, and then remove the relay box (A).
4. Install in the reverse order of removal.

Scheme 66

Scheme 67

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 VOLTAGE SPECIFICATION Fan Motor Voltage Manual First speed 3.8 ± 0.5V Second speed 4.9 ± 0.5V Third speed 6.1 ± 0.5V Fourth speed 7.2 ± 0.5V Fifth speed 8.3 ± 0.5V Sixth speed 9.5 ± 0.5V Seventh speed 10.6 ± 0.5V eighth speed Battery (+) *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.

Scheme 68

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.
4. Installation is the reverse order of removal.