Check Hood Switch

Display the [Hood Switch Close-side] data using Subaru Select Monitor. Refer to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

Does the display switch between [OFF] ↔ [ON] when the front hood is opened ↔ closed?

Yes  : The hood switch is OK.

No  : Go to  2.

Display the [Hood Switch Open-side] data using Subaru Select Monitor. Refer to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

Does the display switch between [ON] ↔ [OFF] when the front hood is opened ↔ closed?

Yes  : The hood switch is OK.

No  : Go to  3.

1. Disconnect the connector of body integrated unit.
2. Disconnect the connector of hood switch.
3. Measure the resistance of harness between body integrated unit and hood switch.

   Connector & terminal 

   (B73) No. 3 - (B103) No. 1:

   (B73) No. 4 - (B103) No. 3:

Is the resistance less than 10 Ω?

Yes  : Go to  4.

No  : Repair or replace the harness.

Measure the resistance between the hood switch and chassis ground.

Connector & terminal 

(B103) No. 2 - Chassis ground (-):

Is the resistance less than 10 Ω?

Yes  : Go to  5.

No  : Repair or replace the harness.

Measure the resistance between hood switch terminals.

Terminals 

No. 3 - No. 2

Is the resistance less than 1 Ω when the front hood is closed?

Yes  : Replace the lock assembly front hood. Refer to SECURITY AND LOCKS>Front Hood Lock Assembly .

No  : Replace the body integrated unit. Refer to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT .

Measure the resistance between hood switch terminals.

Terminals 

No. 1 - No. 2

Is the resistance less than 1 Ω when the front hood is closed?

Yes  : Replace the body integrated unit. Refer to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT .

No  : Replace the lock assembly front hood. Refer to SECURITY AND LOCKS>Front Hood Lock Assembly .