Front Power Window Motor Inspection: Driver-side

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.