Test O: The Auxiliary Blower Motor Does Not Operate Correctly Using The Front Auxiliary Climate Controls

PINPOINT TEST O: THE AUXILIARY BLOWER MOTOR DOES NOT OPERATE CORRECTLY USING THE FRONT AUXILIARY CLIMATE CONTROLS

O1-O3:

O3-O4:

O5-O6:

Normal Operation
Under normal operation, the blower motor is provided a ground from the resistor through circuit 515 (OG/RD). The resistor gets a ground from the front auxiliary blower switch, depending on selected speed, through circuit 261 (OG/BK), 269 (LB/OG) or circuit 260 (RD/OG).

Possible Causes
- An open, short to ground or together in circuits 515 (OG/RD), 261 (OG/BK), 269 (LB/OG) or 260 (RD/OG).
- Auxiliary blower motor resistor.
- Front auxiliary climate control assembly.