CHECK AIR MIX DOOR ACTUATOR POSITION SWITCH SIGNAL.

1) Connect the connector of auto A/C control module and air mix door actuator.

2) Turn the ignition switch and AUTO switch to ON.

3) Check the voltage between auto A/C control module connector terminals while changing the setting temperature between maximum COOL and maximum HOT.

Connector & terminal

(i49) No. 1 (+) — (i48) No. 16 (−):

QUESTION
Does the voltage change between 0.5 V (Max. HOT) and 4.5 V (Max. COOL)?
Yes	No
	Replace the air mix door actuator.