Test O: The Blower Motor Operates Continuously In High Speed - Manual Climate Control

PINPOINT TEST O: THE BLOWER MOTOR OPERATES CONTINUOUSLY IN HIGH SPEED - MANUAL CLIMATE CONTROL

O1-O3:

Normal Operation
Under normal operation, the blower motor relay coil receives ground from the function selector switch through circuit 399 (BN/YE) if any position but OFF is selected. The blower motor is provided a ground from the blower resistor or blower switch through circuit 261 (OG/BK).

Possible Causes
- A short to ground in circuits 261 (OG/BK) or 399 (BN/YE)
- Blower motor switch
- Function selector switch