Grand Marquis V8-302 5.0L VIN F FI (1985)
Blower Motor: Testing and Inspection
Current Draw Test
Heater Blower Motor Current Draw Test
This in-vehicle test will determine if the blower motor is operating properly.
1. Connect a 0.0-30.0 ammeter as shown.
2. Ground the negative side of blower motor connector with a 10 gauge or larger jumper wire, and measure the motor current draw.
3. If the blower motor is operating properly, the current draw readings will be within the following specification.
a. Low 4.5-5.5 amps.
b. Medium Low 7.0-8.0 amps.
c. Medium High 14-18 amps.
d. High 20-25 amps.
