Test L: The Blower Motor Is Inoperative - EMTC

PINPOINT TEST L: THE BLOWER MOTOR IS INOPERATIVE - EMTC

L1:

L1-L3:

L4-L6:

L6-L9:

L9 Continued:

Normal Operation
Under normal operation, the blower motor relay coil receives ignition voltage through circuit 296 (WH/VT). The coil receives ground from the EMTC module through circuit 1322 (BN/WH) if any function selector position but OFF is selected. Voltage is supplied to the relay switch contact through circuit 364 (BK/LG). When the relay coil is energized, voltage is delivered to the blower motor through circuit 261 (OG/BK). Ground for the blower motor is provided through circuit 752 (YE/RD) from the blower resister or the blower switch (HI). The blower resister and blower switch is grounded through circuit 1205 (BK).

Possible Causes
- An open in circuit 752 (YE/RD), 1205 (BK), 261 (OG/BK), 364 (BK/LG), 1322 (BN/WH) or 296 (WH/VT)
- Blower motor
- Blower motor relay
- Blower motor switch