THERMO-Time Switch

Unplug connector from thermo-time switch and use ohmmeter across terminals. Reading should be very low or zero ohms. Use stop watch and apply voltage to terminal "G" of switch. Compare delay time with THERMO-TIME SWITCH SPECIFICATIONS table. If time delay is clearly outside of specifications given in table, replace unit. See Fig 3.

NOTE: If coolant temperature is above 50°F (10°C), connect ohmmeter between terminal "W" of switch and ground. Reading should be either very high or infinity.

Fig 1: Throttle Switch Test

Courtesy of NOT AVAILABLE

Fig 2: Cutaway View of Auxiliary Air Valve

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Fig 3: Thermo-Time Switch

Courtesy of NOT AVAILABLE

THERMO-TIME SWITCH SPECIFICATIONS

Temperature °F (°C)

⁽¹⁾Delay 1 (Seconds)

⁽²⁾Delay 2 (Seconds)

-4 (-20)

26 (-10)

5.7

6.5

32 (0)

3.5

50 (10)

1.2

3.5

59 (15)

2.7

68 (20)

86 (30)

95 (35)

⁽¹⁾	With 15°C stamped on switch body.

⁽²⁾	With 35°C stamped on switch body.