Test R: The Auxiliary Blower Motor Is Inoperative
PINPOINT TEST R: THE AUXILIARY BLOWER MOTOR IS INOPERATIVER1:
R1-R3:
R4-R6:
R7-R8:
Normal Operation
Under normal operation, the auxiliary blower motor relay coil receives a ground through circuit GD149 (BK/GY). The coil receives voltage from circuit CH123 (VT/GN) when the EATC module is ON or the function selector switch is in any position but OFF. Voltage is supplied to the relay contacts from circuit SBB18 (YE/RD). When the relay coil is energized, voltage is delivered to the blower motor through circuit CHA02 (BN/GN). Ground for the motor is provided through circuit CHA08 (GN/OG) from the resistor and switch. Ground for the resistor and switch is provided by circuit GD149 (BK/GY).
Possible Causes
- Fuse
- An open in circuit GD149 (BK/GY), CH123 (VT/GN), SBB18 (YE/RD), CHA02 (BN/GN) or circuit CHA08 (GN/OG)
- Auxiliary blower motor
- Auxiliary blower motor relay
- Front auxiliary climate control assembly