Front Power Window Motor Inspection: Driver-side

WARNING: This page is about a different car, the 2014 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
Remove the front door trim. (Driver-side) (See FRONT DOOR TRIM REMOVAL/INSTALLATION .)
Disconnect the front power window motor connector.

Apply battery positive voltage and connect the ground to front power window motor terminals E and F, and then inspect the front power window motor operation.

B+ Terminal	Ground Terminal	Operation
E	F	Close
F	E	Open

Fig 1: Front Power Window Motor - Circuit Diagram

Courtesy of MAZDA MOTORS CORP.

If the front power window motor does not operate as indicated in the table, replace it. (See FRONT POWER WINDOW MOTOR REMOVAL/INSTALLATION .)

Connect the battery positive voltage to front power window motor terminal D and connect terminal C to ground.
Operate the front power window motor and verify the wave patterns for terminals A and B.
- Terminal: A, B(+) <==> ground (-)
- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range
- If the malfunction, replace the front power window motor. (See FRONT POWER WINDOW MOTOR REMOVAL/INSTALLATION .)
  
  Fig 2: Front Power Window Motor Signal Waveform
  Courtesy of MAZDA MOTORS CORP.