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| Intake temperature less than 19° C |
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| Coolant temperature less than 80° C |
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| Passenger compartment temperature about 20° C |
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| Battery voltage greater than 11 V |
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| Alternator load not greater than 50% (terminal DF) |
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| Engine speed greater than 450 rpm |
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| Turn rotary knob for interior temperature to end position for maximum temperature. |
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