TSRM/MK3 Supra/Repair Manual
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p.044

AC/Air Conditioning System — Air Mix Control Servo Motor, page 45

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p.046
Air Mix Control Servo Motor — MK3 Supra Air Conditioning System, page 45
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Page text (OCR transcript)
Air Mix Control Servo Motor

INSPECTION OF AIR MIX CONTROL SERVO
MOTOR

(Operation)

(a) Connect the positive (+) lead from the battery to terminal 10 and the negative (—) lead to terminal 11.

(b) Check that the lever moves smoothly from WARM to COOL.

(c) Connect the positive (+) lead from the battery to terminal 11 and the negative (—) lead to terminal 10.

(d) Check that the lever moves smoothly from COOL to WARM.

(Resistance)

While operating the servo motor from either points (a) or (b), measure the resistance values of terminals 5 and 6:

Position                    Resistance (Ω)
COOL                       1,900 ± 100
WARM                      200 ± 50

The resistance values from COOL to WARM will successively decrease.

If operation or resistance is not as specified, replace the servo motor.