Test Q: No Operation In Lower Speeds - Manual Climate Control
PINPOINT TEST Q: NO OPERATION ON LOWER SPEEDS - MANUAL CLIMATE CONTROLQ1:
Q1-Q4:
Q4-Q6:
Normal Operation
Under normal operation, the blower motor is provided a ground from the blower resistor through circuit 261 (OG/BK). 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 754 (LG/WH) or 752 (YE/RD), depending on selected speed. The blower switch receives its ground from circuit 57 (BK).
Possible Causes
- An open in circuits 57 (BK), 261 (OG/BK), 752 (YE/RD) or 754 (LG/WH)
- Blower motor resistor
- Blower motor switch