Current Draw Test

CURRENT DRAW TEST
1. Disconnect the electrical wire harness from the blower motor.
2. Connect ammeter such as Rotunda 73 Digital Multimeter 105-R0051 or equivalent, between the right (positive) terminal on the blower motor and the corresponding terminal of the wire harness connector. Connect a jumper wire between the left (ground) terminal on the blower motor and the corresponding terminal of the wire harness connector.
3. Place the system temperature control knob in the med-range position (halfway between COOL and WARM) and the function control knob in VENT position (air through registers).
4. With the battery fully charged, start the engine and operate the blower motor in all speeds. Record the current draw for each speed.

Blower Motor Current Draw Chart:

5. The current draw for each speed should be within the limits shown in the Blower Motor Current Draw Chart.
6. Disconnect the ammeter and jumper wire, reconnect the harness connector to the blower motor.
7. Check the system for proper operation.