Actuator Check

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ACTUATOR

Turn the ignition switch ON while pressing the A/C control AUTO switch and Recirculation / Fresh (R/F) select switch simultaneously.

Fig 1: Locating A/C Control Auto Switch And Recirculation / Fresh (R/F) Select Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
After entering the DTC check mode (Sensor Check Mode), press the R/F select switch.

Each damper, motor and relay will automatically operate the actuator check at 1 second intervals from step No. 1 to No. 10 (see table below). At this time, check the temperature on the display and check the air flow with your hand.

If a slower display speed is desired, press the temperature up switch to change the "step no." display. Each press of the switch will change the step no. by 1.

Fig 2: Locating R/F Select Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Codes are displayed as numbers from lowest to highest.
To cancel the check mode, press the OFF switch.

DISPLAY CODE CHART

Step No.	Display Code	Conditions
Step No.	Display Code	Blower Level	Air Flow Vent	Air Inlet Damper	Magnet Clutch	Air Mix Damper	Lap-jet Damper
1	0	0	FACE	FRESH	OFF	COOL Side (Fully closed)	CLOSE
2	1	1	FACE	FRESH	OFF	COOL Side (Fully closed)	CLOSE
3	2	14	FACE	RECIRCULATION/FRESH	OFF	COOL Side (Fully closed)	CLOSE
4	3	14	FACE	RECIRCULATION/FRESH	ON	COOL Side (Fully closed)	CLOSE
5	4	14	FACE	RECIRCULATION	ON	COOL / WARM (50% open)	CLOSE
6	5	14	BI-LEVEL	RECIRCULATION	ON	COOL/ WARM (50% open)	CLOSE
7	6	14	FOOT/DEF	RECIRCULATION	ON	WARM side (Fully opened)	CLOSE
8	7	14	FOOT	RECIRCULATION	ON	WARM side (Fully opened)	OPEN
9	8	14	FOOT/DEF	RECIRCULATION	ON	WARM side (Fully opened)	OPEN
10	9	31	DEF	RECIRCULATION	ON	WARM side (Fully opened)	CLOSE