Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Glass windows mirrors / Power window control switch / Inspection

1. MAIN SWITCH

• Driver’s seat (model with AUTO)

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.

• Since the passenger’s seat switch cannot be checked by using the switch - power window main, use the switch - power window sub.

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

1. Remove the switch - power window main.

2. 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”.

3. 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

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

• Passenger’s seat and rear seat

1. Check the resistance between connector terminals.

	Terminal No.	Inspection conditions	Standard
Passenger’s seat (Model without AUTO)	14 — 8 2 — 1	UP	Less than 1 -
	14 — 2 14 — 8	OFF	1 M- or more
	1 — 2 1 — 8 2 — 8	OFF	Less than 1 -
	14 — 2 1 — 8	DOWN	Less than 1 -
Rear LH	14 — 15 1 — 16	UP	Less than 1 -
	14 — 15 14 — 16	OFF	1 M- or more
	1 — 15 1 — 16 15 — 16	OFF	Less than 1 -
	14 — 16 1 — 15	DOWN	Less than 1 -
Rear RH	14 — 7 1 — 6	UP	Less than 1 -
	14 — 6 14 — 7	OFF	1 M- or more
	1 — 6 1 — 7 6 — 7	OFF	Less than 1 -
	14 — 6 7 — 1	DOWN	Less than 1 -

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

2. SUB-SWITCH

Passenger’s seat (model with AUTO)

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 sub to the passenger’s side motor using the oscilloscope function in the Subaru Select Monitor.

1. Remove the switch - power window sub.

2. Connect the battery and the Subaru Select Monitor to the switch - power window sub terminal.

CAUTION:

Never mix up the terminals when connecting the harness connector of the switch - power window sub and the battery. If the connection is wrong, the switch - power window sub may be damaged.

NOTE:

• When the battery is connected to the switch - power window sub terminal, the letters “AUTO” on the passenger’s side knob illuminates.

• For detailed procedures, refer to “Subaru Select Monitor Operation Manual”.

3. Operate the switch - power window sub and check the output.

NOTE:

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

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

Passenger’s seat and rear seat (model without AUTO)

1. Remove the switch - power window sub.

2. Check the resistance between connector terminals.

	Terminal No.	Inspection conditions	Standard
Passenger seat, rear	4 — 5 7 — 8	OFF	Less than 1 -
	5 — 6 6 — 8	OFF	1 M- or more
	5 — 6 7 — 8	UP	Less than 1 -
	4 — 5 4 — 8	UP	1 M- or more
	4 — 5 6 — 8	DOWN	Less than 1 -
	4 — 6 7 — 8	DOWN	1 M- or more

3. Check the switch light illumination condition.

	Terminal No.	Inspection conditions	Specification
Passenger seat, rear	6 — 7, 4	Battery connection between terminals	Light ON

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

Removal

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Installation

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