Check Door Lock Switch

Display the [Manual lock SW input] data using Subaru Select Monitor. Ref. 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 

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

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 

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

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 

(D149) No. 1 - 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 

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

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

Is harness normal?

Yes  : Replace the body integrated unit. Ref. to SECURITY AND LOCKS>BODY INTEGRATED UNIT .

No  : Repair or replace the harness.