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POWER WINDOW MAIN SWITCH INSPECTION

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2016 – MX-5 – Body and Accessories

POWER WINDOW MAIN SWITCH INSPECTION

NOTE:

  • The power outer mirror switch is built into the power window main switch.

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

2. Remove the power window main switch. (See POWER WINDOW MAIN SWITCH REMOVAL/INSTALLATION.)

3. Connect the power window main switch connector.

4. Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

5. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).

  • If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s) and related wiring harnesses.

    • If the system does not work normally even though the inspection items are normal, replace the power window main switch.

Terminal Voltage Table (Reference)

Power Window Main Switch

Terminal

Signal name

Connected to

Measurement condition

Voltage (V)

Inspection item(s)

1A

Ground

Body ground

Under any condition

1.0 or less

Body ground

1B

Power supply

P.WINDOW 30 A fuse

Under any condition

B+

  • P.WINDOW 30 A fuse

  • Battery

1C

Hall effect switch ground

Power window motor (driver’s side)

Under any condition

1.0 or less

Power window motor (driver’s side)

1D

Open signal

Power window motor (driver’s side)

Door glass is performing open operation

B+

Power window motor (driver’s side)

Door glass is performing open operation during approx. 40 s after ignition is switched from ON (engine off or on) to off

B+

Other

1.0 or less

1E

???

???

???

???

???

1F

Close signal

Power window motor (driver’s side)

Door glass is performing close operation

B+

Power window motor (driver’s side)

Door glass is performing close operation during approx. 40 s after ignition is switched from ON (engine off or on) to off

B+

Other

1.0 or less

1G

Hall effect switch power supply

Power window motor (driver’s side)

Ignition is switched ON (engine off or on)

B+

Power window motor (driver’s side)

Ignition is switched off (LOCK)

1.0 or less

1H

Top lock switch signal

Top lock switch

Convertible top is close

B+

Top lock switch

Convertible top is open

1.0 or less

1I

???

???

???

???

???

1J

Convertible top switch signal

Convertible top switch

Convertible top is close

B+

Convertible top switch

Convertible top is open

1.0 or less

1K

IG1

C/U IG1 15 A fuse

Ignition is switched ON (engine off or on)

B+

  • C/U IG1 15 A fuse

  • Battery

1L

Serial communication

Power window subswitch

Terminal used for communication therefore determination based on terminal voltage is not possible.

2D

Hall effect switch No.1

Power window motor (driver’s side)

Door glass (driver’s side) is operating

Wave pattern (See Inspection Using an Oscilloscope (Reference))

Power window motor (driver’s side)

2F

Hall effect switch No.2

Power window motor (driver’s side)

Door glass (driver’s side) is performing open operation

Wave pattern (See Inspection Using an Oscilloscope (Reference))

Power window motor (driver’s side)

2I

???

???

???

???

???

2K

???

???

???

???

???

2L

Door switch signal

Door latch and lock actuator (driver’s side)

Door is close

B+

Door latch and lock actuator (driver’s side)

Door is open

1.0 or less

2M

???

???

???

???

???

2N

???

???

???

???

???

Power Outer Mirror Switch

Terminal

Signal name

Connected to

Measurement condition

Voltage (V)

Inspection item(s)

2A

ACC

MIRROR 7.5 A fuse

Ignition is switched ON (engine off or on) or off

B+

  • MIRROR 7.5 A fuse

  • Battery

Ignition is switched off (LOCK)

1.0 or less

2B

Power outer mirror right/down signal

Power outer mirror (LH)

Outer mirror glass (LH) is operating downward or to right direction

B+

Power outer mirror

Other

1.0 or less

2C

Power outer mirror right/down signal

Power outer mirror (RH)

Outer mirror glass (RH) is operating downward or to right direction

B+

Power outer mirror

Other

1.0 or less

2E

???

???

???

???

???

2G

Power outer mirror left signal

Power outer mirror (LH)

Outer mirror glass (LH) is operating to left direction

B+

Power outer mirror

Other

1.0 or less

2H

Power outer mirror up signal

Power outer mirror (LH/RH)

Outer mirror glass (LH/RH) is operating upward

B+

Power outer mirror

Other

1.0 or less

2J

Power outer mirror left signal

Power outer mirror (RH)

Outer mirror glass (RH) is operating to left direction

B+

Power outer mirror

Other

1.0 or less

Inspection Using an Oscilloscope (Reference)

  • Connection terminal:

    2D (+) ??? body ground (-)

    2F (+) ??? body ground (-)

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

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