Test P: The Auxiliary Blower Motor Is Inoperative
PINPOINT TEST P: THE AUXILIARY BLOWER MOTOR IS INOPERATIVENormal Operation
Under normal operation, the auxiliary blower motor relay coil receives ignition voltage through circuit SBB31 (WH/RD). The coil receives ground from the electronic automatic temperature control (EATC) module through circuit CH112 (VT/WH) if any auxiliary blower speed but OFF is selected. Voltage is supplied to the relay switch contact through circuit CBP45 (YE). When the relay coil is energized, voltage is delivered to the blower motor through circuit CHA02 (BN/GN). Ground for the blower motor is provided through circuit CHA03 (GY/OG) from the blower motor resistor. The blower resistor is grounded through circuit GD147 (BK/VT).
This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors
- Auxiliary blower motor
- Auxiliary blower motor relay 1
- Auxiliary blower motor resistor
P1:
P1-P3:
P4-P6:
