DTC S2.3

id070200811300

DTC S2.3

Air mix actuator (potentiometer)

POSSIBLE CAUSE

•  Air mix actuator malfunction

•  Climate control unit malfunction

•  Open circuit between air mix actuator and climate control unit

•  Short circuit between air mix actuator (terminal B) and climate control unit (terminal X)

DTC S2.3	Air mix actuator (potentiometer)
POSSIBLE CAUSE	• Air mix actuator malfunction • Climate control unit malfunction • Open circuit between air mix actuator and climate control unit • Short circuit between air mix actuator (terminal B) and climate control unit (terminal X)

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	• Disconnect air mix actuator connector. • Disconnect airflow mode actuator connector. • Is resistance between terminals C and E of air mix actuator as indicated below? ― 3.2 kilohms—4.8 kilohms	Yes	Go to the next step.
1		No	Replace air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)
2	• Is resistance between terminals B and E of air mix actuator as indicated below? ― 0.4 kilohms—4.2 kilohms	Yes	Go to the next step.
2		No	Replace air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION.)
3	• Connect air mix actuator connector. • Disconnect climate control unit connector. • Is resistance between terminals U and V of climate control unit as indicated below? ― 3.2 kilohms—4.8 kilohms	Yes	Go to the next step.
3		No	Repair wiring harness.
4	• Is resistance between terminals V and X of climate control unit as indicated below? ― 0.4 kilohms—4.2 kilohms	Yes	Replace climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
4		No	Repair wiring harness. (Open circuit)