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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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POWER WINDOW MOTOR INSPECTION

Driver-side

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Remove the door trim. (Driver-side) (See DOOR TRIM REMOVAL/INSTALLATION.)
3. Disconnect the power window motor connector.
4. Apply battery positive voltage and connect the ground to power window motor terminals G and A, and then inspect the power window motor operation.

B+ Terminal

Ground Terminal

Operation

G

A

Close

A

G

Open

5. Connect the battery positive voltage to power window motor terminal D and connect terminal H to ground.
6. Operate the power window motor and verify the wave patterns for terminals B and F.

  • Terminal:

    B(+), F(+) ↔ ground (-)

  • Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

Passenger-side

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Remove the door trim. (Passenger-side) (See DOOR TRIM REMOVAL/INSTALLATION.)
3. Disconnect the power window motor connector.
4. Apply battery positive voltage and connect the ground to power window motor terminals G and A, and then inspect the power window motor operation.

B+ Terminal

Ground Terminal

Operation

G

A

Close

A

G

Open

5. Connect the battery positive voltage to power window motor terminal D and connect terminal H to ground.
6. Operate the power window motor and verify the wave patterns for terminals B and F.

  • Terminal:

    B(+), F(+) ↔ ground (-)

  • Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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