Kia Optima Hybrid: Blower / PWM Blower Module Repair procedures

Inspection
1.
Ignition "ON"
2.
Manually operate the control switch and measure the voltage of blower motor.
3.
Select the control switch to raise voltage until high speed.

BLOWER speed
Manual Voltage
Auto Voltage
1
3.4
Auto Low(4.5V)
2
4.6
4.5~5.5
3
5.9
5.6~6.7
4
7.2
6.8~7.7
5
8.3
7.8~8.9
6
9.5
9.0~10.1
7
11.3
10.2~11.3
8
B+
?

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the main crash pad lower cover (A).

3.
Disconnect the PWM blower module connector (A) and then remove the PWM blower module (B) after loosening the mounting screws.

4.
Installation is the reverse order of removal.
Blower Motor Repair procedures

Inspection 1. Connect the battery voltage and check the blower motor rotation. 2. If the blower motor voltage is not operated well, substitute with a known-good blower motor and check for proper operation. ...

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Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: General Information


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Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Body Control Module (BCM) Repair procedures


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