Tracker 4x4 L4-1.6L SOHC TBI (1994)
Blower Motor: Description and Operation
CIRCUIT OPERATION
Battery voltage is applied through the heater Fuse to the blower speed selector switch when the ignition switch is in the "ON" position. When the
blower speed selector switch is turned to any position but "OFF," battery voltage is applied through the closed contact in the blower speed selector
switch.
With the blower speed selector switch in low, current must travel the entire length of the resistive element in the blower motor resistor to the
blower motor. The resisted voltage caused by the blower motor resistor maintains the blower motor at low speed.
When the blower speed selector switch is in the M1 position, voltage passes only partially through the blower motor resistor before reaching the
blower motor. Since less of the blower motor resistor is a part of the circuit, the resistance in the circuit is lower and the blower motor operates at a
higher speed.
M2 operation is identical to M1 operation except that even less of the blower motor resistor is in the circuit. Therefore, blower operation in M2 is
faster than it is in M1.
With the blower speed selector switch in the high position, voltage bypasses the blower motor resistor entirely and passes directly to the blower
motor.
The blower motor is permanently grounded at G201.
