Test L: The Blower Motor Does Not Operate Correctly - EMTC
PINPOINT TEST L: THE BLOWER MOTOR DOES NOT OPERATE CORRECTLY - EMTCNormal Operation
Under normal operation, the blower motor is provided a ground from the blower resistor through circuit 755 (BN/WH). The resistor gets a ground from circuit 57 (BK) in the lowest blower setting. In MED-LO and MED-HI the resistor gets a ground through circuit 751 (DB/WH) or 752 (YE/RD), depending on selected speed. In HI, the blower motor is grounded directly through the blower switch from circuit 755 (BN/WH) to circuit 57 (BK). The blower switch receives its ground from circuit 57 (BK).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Blower motor resistor
- Blower motor switch
L1-L4:
L4-L6:
L6-L9:
L9-L10:
