LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (HVAC System - Manual) >> Diagnostic Information and Procedures >> Blower Motor Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

The blower motor control circuit is connected to the blower motor resistor pack and the blower motor switch. The switch, blower motor resistor and the blower motor are in a series circuit. The following list represents the number of resistors in series with the blower motor per particular speed request:

When the fan switch is moved to the LO or MED speeds, ground is applied through the blower motor switch to the appropriate circuit of the blower motor resistor causing the blower motor to function at the selected speed. When blower switch is in the Hi speed position, ground is applied directly to the blower motor directly through the blower switch, bypassing the blower motor resistor.

scientia non olet · About LEMON Manuals