Main Switch

Driver's seat

CAUTION: Since the switch - power window main is controlled by CPU, do not check continuity for switch alone with the circuit tester. Performing continuity check with circuit tester can damage the switch - power window main circuit.

Check output from the switch - power window main to the driver's side motor using the oscilloscope function in the Subaru Select Monitor.

Remove the switch - power window main.
Connect the battery and the Subaru Select Monitor to the switch - power window main terminal.
CAUTION: Never mix up the terminals when connecting the harness connector of the switch - power window main and the battery. If the connection is wrong, the switch - power window main may be damaged.
NOTE:
- When the battery is connected to the switch - power window main terminal, the letters "AUTO" on the driver's side knob illuminates.
- For detailed procedures, refer to "Subaru Select Monitor Operation Manual".
Fig 1: Identifying Power Window Main Switch
Courtesy of SUBARU OF AMERICA, INC.

Operate the switch - power window main and check the output.

NOTE: Since output time during window UP operation is extremely short, it cannot be checked without using a measuring instrument such as oscilloscope. Output is constantly produced while the switch is operated for window DOWN operation.

Inspection conditions	Output time	Standard
AUTO UP	Approx. 130 ms	Battery voltage
UP	Approx. 130 ms	Battery voltage
OFF	-	0 V
DOWN	During switch operation	Battery voltage
AUTO DOWN	Approx. 300 ms	Battery voltage

If the inspection result is not within the standard, replace the switch - power window main.

Except for driver's seat

Check the resistance between terminals of the switch - power window main.

Fig 2: Checking Resistance Between Power Window Main Switch Terminals

Courtesy of SUBARU OF AMERICA, INC.

	Terminal No.	Inspection conditions	Standard
Passenger's seat	14 - 8 2 - 1	UP	Less than 1 Ω
	14 - 2 14 - 8	OFF	1 MΩ or more
	1 - 2 1 - 8 2 - 8	OFF	Less than 1 Ω
	14 - 2 1 - 8	DOWN	Less than 1 Ω
Rear LH	14 - 15 1 - 16	UP	Less than 1 Ω
	14 - 15 14 - 16	OFF	1 MΩ or more
	1 - 15 1 - 16 15 - 16	OFF	Less than 1 Ω
	14 - 16 1 - 15	DOWN	Less than 1 Ω
Rear RH	14 - 7 1 - 6	UP	Less than 1 Ω
	14 - 6 14 - 7	OFF	1 MΩ or more
	1 - 6 1 - 7 6 - 7	OFF	Less than 1 Ω
	14 - 6 7 - 1	DOWN	Less than 1 Ω

If the inspection result is not within the standard, replace the switch - power window main.