Test N: The Blower Motor Is Inoperative - Manual Climate Control

PINPOINT TEST N: THE BLOWER MOTOR IS INOPERATIVE - MANUAL CLIMATE CONTROL

N1:

N1-N2:

N3-N4:

N4 Continued:

N5:

N6-N7:

N7-N8:

N9:

Normal Operation
Under normal operation, the blower motor relay coil receives a ground through circuit GD120 (BK/GN). The coil receives voltage from the function selector switch through circuit CH123 (VT/GN) when any position but OFF is selected. Voltage is supplied to the relay contacts from circuit SBB16 (VT/RD). When the relay coil is energized, voltage is delivered to the blower motor and the high speed blower motor relay through circuit CH402 (YE/GN). Ground is provided from the high speed blower motor relay to the blower motor through circuit VH301 (YE/BU). Voltage for the function selector switch is supplied by circuit A_CBP20 (YE/VT).

Possible Causes
- Fuse(s)
- An open in circuit A_CBP20 (YE/VT), GD120 (BK/GN), CH123 (VT/GN), CH402 (YE/GN), VH301 (YE/BU) or circuit SBB16 (VT/RD)
- Blower motor
- High speed blower motor relay
- Blower motor relay