Test L

PINPOINT TEST L: THE BLOWER MOTOR IS INOPERATIVE

Test L1-L3:

Test L4-L5:

Test L6-L7:

Test L8-L10:

Test L11-L13:

Normal Operation
Under normal operation, the blower motor relay coil receives a ground through circuit 1205 (BK). The coil receives voltage from the DATC module through circuit 575 (YE/BK) when the DATC is ON. Voltage is supplied to the relay contacts from circuit 538 (GY/RD). 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 536 (BK/LG) from the blower control module. Ground for the blower control module is provided by circuit 1205 (BK).

Possible Causes
- An open in circuit 1205 (BK), 575 (YE/BK), 371 (PK/WH), 536 (BK/LG) or circuit 538 (GY/RD).
- A short to ground in circuit 575 (YE/BK).
- A short to voltage in circuit 575 (YE/BK) or 371 (PK/WH).
- Blower motor control module.
- DATC module.
- Blower motor relay.