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Defogger Control

WARNING: This page is about a different car, the 2013 Kia Sportage and 2012 Kia Sportage. However, it is still accessible from the selected car via links, so may be relevant.
  1. Defogger switch is self Return type. Therefore, when the switch is pressed, Defogger output is on. and user press the Switch again, the Defogger output is off.
  2. There is no occurrence of an accident at low voltage, meaning that the Defoggers are not to be operated immediately of low voltage detection.
  3. It is protected the battery from discharge.
  4. State Description
STATE DESCRIPTION CHART

State Description
Initial Condition IGN1 = On &ALT L = On & (Defogger Relay&Front Deicer Relay) = Off & Bat > Low Battery
Event Defogger switch= Off → On
Action Defogger Relay = On
Front Deicer Relay = On
STATE DESCRIPTION CHART

State Description
Initial Condition IGN1 = On&ALT L = On & (Defogger Relay or Front Deicer Relay) = On
Event Bat < LowBattery or
IGN1 = Off or
Alt L = Off or
Defogger switch = Off → On or
From the Defogger output On, when pass "DefoggerTime"
Action Defogger Relay = Off
Front Deicer Relay=Off
Fig 1: Defogger Control Timing Pattern
G07426887Courtesy of KIA MOTORS AMERICA, INC.

T1: Defogger time (20 min ± 1 min)

VALUE SPECIFICATION CHART

Name Value
Defogger Time 20 min ± 1 min
Low Battery 9 Voltage