Multiple 2 Speed Motors - Mazda6 (2.3L)

WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Ensure battery is fully charged. Disconnect cooling fan motor connector. Connect ammeter between positive battery terminal and positive cooling fan motor connector terminal for desired fan speed test. See Fig 1, Fig 2 & Fig 3 .
Ensure cooling fan motor operates smoothly on all speeds at specified current. See COOLING FAN MOTOR CURRENT DRAW SPECIFICATIONS table. If cooling fan motor draws more or less than specified amperage, check wiring. If wiring is okay, replace cooling fan motor.

Fig 1: Testing Low Fan Speed Circuit - Mazda6 (2.3L)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Testing Medium Fan Speed Circuit - Mazda6 (2.3L)

Courtesy of MAZDA MOTORS CORP.

Fig 3: Testing High Fan Speed Circuit - Mazda6 (2.3L)

Courtesy of MAZDA MOTORS CORP.