Main Switch

Driver's side

CAUTION: Since the driver's side power window switch is controlled by CPU, do not check continuity for switch alone with the circuit tester. Performing continuity check with circuit tester may damage the driver's side power window switch circuit.

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

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

Operate the main switch 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 (model without driver's side AUTO UP function)	Output time (model with driver's side AUTO UP function)	Specification
AUTO UP	600 ms	Approx. 130 ms	Battery voltage
UP	During switch operation	Approx. 130 ms	Battery voltage
OFF	-	-	0 V
DOWN	During switch operation	During switch operation	Battery voltage
AUTO DOWN	600 ms	Approx. 300 ms	Battery voltage

Replace the power window main switch if the inspection result is not within the standard value.

Except for driver's seat

Check the resistance between main switch terminals.

Fig 2: Checking Resistance Between Main Switch Terminals

Courtesy of SUBARU OF AMERICA, INC.

	Terminal No.	Inspection conditions	Specification
Passenger's side	14 - 8 19 - 12	UP	Less than 1 Ω
	14 - 12 14 - 8	OFF	1 MΩ or more
	19 - 8 19 - 12 8 - 12	OFF	Less than 1 Ω
	14 - 12 19 - 8	DOWN	Less than 1 Ω
Rear LH	14 - 7 19 - 5	UP	Less than 1 Ω
	14 - 7 14 - 5	OFF	1 MΩ or more
	19 - 7 19 - 5 7 - 5	OFF	Less than 1 Ω
	14 - 5 19 - 7	DOWN	Less than 1 Ω
Rear RH	14 - 1 19 - 3	UP	Less than 1 Ω
	14 - 1 14 - 3	OFF	1 MΩ or more
	19 - 3 19 - 1 3 - 1	OFF	Less than 1 Ω
	14 - 3 19 - 1	DOWN	Less than 1 Ω

Replace the main switch if the inspection result is not within the standard value.