Temperature Control Actuator Inspection

Remove temperature control actuator from heater unit referring to TEMPERATURE CONTROL ACTUATOR REMOVAL AND INSTALLATION .
Connect connector to temperature control actuator (1).

Fig 1: Removing Temperature Control Actuator From Heater Unit
Courtesy of SUZUKI OF AMERICA CORP.
Set temperature selector of HVAC control module to MAX HOT position with ignition switch ON, and make sure if the position of actuator lever is MAX HOT position (A).
Turn ignition switch OFF, and then disconnect connector from temperature control actuator.
Measure resistance between terminal "1" and "3".
Temperature control actuator resistance between terminal "1" and "3" (MAX HOT position)

Approximately 4.8 - 6.0 kΩ

Fig 2: Measuring Resistance Between Terminal "1" And "3"
Courtesy of SUZUKI OF AMERICA CORP.
Connect connector to temperature control actuator.
Set temperature selector of HVAC control module to MAX COOL position with ignition switch ON, and make sure if the position of actuator lever is MAX COOL position (B).
Turn ignition switch OFF, and then disconnect connector from temperature control actuator.
Measure resistance between terminal "1" and "3".
Temperature control actuator resistance between terminal "1" and "3" (MAX COOL position)

Approximately 1.2 kΩ

Fig 3: Measuring Resistance Between Terminal "1" And "3"
Courtesy of SUZUKI OF AMERICA CORP.

If check result is not satisfactory, replace the actuator with new one.