Toyota Tundra Service Manual: Actuator Check

ACTUATOR CHECK

1. ACTUATOR CHECK

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

(b) Press the Recirculation / Fresh switch.

(c) As each damper, motor and relay automatically operate the actuator check at 1 second intervals from step No. 1 to No. 10 continuously, check the temperature and airflow visually and by hand.

HINT:

  • If a slower display is desired, press the driver temperature up switch and change the display in the step operation. Each time the driver temperature up switch is pressed, the display changes by 1 step.
  • The buzzer sounds when the displayed trouble code changes.
  • Codes are displayed from smaller to larger numbers in order.
  • To cancel the check mode, press the "OFF" switch.
Air conditioning unit

Step No.

Display Code

Condition

Blower Level

Air Mix Damper

Airflow Vent

Air Inlet Damper

Compressor

1

0

0

0% open

FACE

FRESH

OFF

2

1

1

0% open

FACE

FRESH

OFF

3

2

17

0% open

FACE

RECIRCULATION / FRESH

ON

4

3

17

0% open

FACE

RECIRCULATION

ON

5

4

17

50% open

B/L

RECIRCULATION

ON

6

5

17

50% open

B/L

RECIRCULATION

ON

7

6

17

50% open

FOOT

FRESH

ON

8

7

17

100% open

FOOT-0

FRESH

ON

9

8

17

100% open

F/D

FRESH

ON

10

9

31

100% open

DEF

FRESH

ON

    Air Conditioning System(for Automatic Air Conditioning System)

    Air Conditioning Compressor Magnetic Clutch Circuit

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