Aerostar 2WD V6-245 4.0L (1990)
Blower Motor: Testing and Inspection
Blower Motor Current Draw, HEATER
Fig. 45 Blower motor current draw & voltage test chart.
1.
Disconnect blower motor electrical connector.
2.
Connect ammeter between positive terminal on motor and corresponding terminal of wire harness electrical connector.
3.
Connect jumper wire between two negative terminals.
4.
Place system temperature control lever in mid-range position (halfway between COOL and WARM). Place function selector lever in HEAT or
VENT position on models less A/C. A/C on models with A/C. Ensure blower is on.
5.
With engine running, operate blower in all speeds. Note current draw for each blower speed. Ensure battery voltage is approximately 14.2 volts
when performing this test.
6.
Current draw for each blower speed should be as shown in Fig. 45.
7.
Disconnect ammeter and jumper wire, then connect electrical connector to blower motor.
