Test R
PINPOINT TEST R: THE AUXILIARY BLOWER MOTOR IS INOPERATIVETest R1-R2:
Test R3-R4:
Test R5-R7:
Test R7-R8:
Normal Operation
Under normal operation, the auxiliary blower motor relay coil receives a ground through circuit 1205 (BK). The coil receives voltage from circuit 575 (YE/BK) when the ignition switch is ON. Voltage is supplied to the relay contacts from circuit 181 (BN/OG). When the relay coil is energized, voltage is delivered to the blower motor through circuit 371 (PK/WH). Ground for the motor is provided through circuit 515 (OG/RD) from the resistor and switches. Ground for the resistor and switches are provided by circuit 1205 (BK).
Possible Causes
- An open in circuit 1205 (BK), 575 (YE/BK), 181 (BN/OG), 371 (PK/WH) or circuit 515 (OG/RD).
- Auxiliary blower motor.
- Auxiliary blower motor relay.
- Front auxiliary climate control assembly.
- Rear auxiliary climate control assembly.