Check Door Lock Switch

Display the [Manual lock SW input] data using Subaru Select Monitor. Refer to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

Does the display change as [OFF] ←→ [ON] when each door lock switch is moved to LOCK?

Yes

Go to  2.

No

Go to  3.

From the condition in step 1), operate each door lock switch (driver's and passenger's) in the UNLOCK direction.

Does the display switch between [OFF] ←→ [ON]?

Yes

The door lock switch is OK.

No

Go to  4.

1. Disconnect the power window main switch (door lock switch) connector.
2. Check the continuity between terminals when moving the power window main switch (door lock switch) in LOCK direction.

Connector & terminal 

Driver's side

(D149) No. 9 - (D149) No. 1:

Passenger's side 

(D125) No. 7 - (D125) No. 3:

Did the indicator change from "No continuity" (1 MΩ or more) to "Continuity exists" (less than 10 Ω)?

Yes

Go to  4.

No

Replace the power window main switch.

Check the continuity between terminals when moving the power window main switch (door lock switch) in UNLOCK direction.

Connector & terminal 

Driver's side 

(D149) No. 8 - (D149) No. 1:

Passenger's side 

(D125) No. 2 - (D125) No. 3:

Did the indicator change from "No continuity" (1 MΩ or more) to "Continuity exists" (less than 10 Ω)?

Yes

Go to  5.

No

Replace the power window main switch.

Measure the resistance between the power window main switch (door lock switch) connector and chassis ground.

Connector & terminal 

Driver's side 

(D149) No. 1 - Chassis ground:

Passenger's side 

(D125) No. 3 - Chassis ground:

Is the resistance less than 10 Ω?

Yes

Go to  6.

No

Repair or replace the harness.

Check the harness between body integrated unit and power window main switch (door lock switch).

Connector & terminal 

Driver's side 

(D149) No. 9 - (i171) No. 32:

(D149) No. 8 - (i171) No. 12:

Passenger's side 

(D125) No. 7 - (i171) No. 32:

(D125) No. 2 - (i171) No. 12:

Is harness normal?

Yes

Replace the body integrated unit. Refer to SECURITY AND LOCKS>BODY INTEGRATED UNIT .

No

Repair or replace the harness.