Check Trunk Opener Button Circuit (Models Without The Keyless Access With Push Button Start System (Except For C4 Model))

Display the [Trunk Request SW Input] data using Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DATA MONITOR .

Does the display switch between [OFF] ↔ [ON] when the trunk opener button is operated?

Yes:  Trunk opener button is OK.

No:  Go to  2.

1. Disconnect the connectors of body integrated unit and trunk opener button.
2. Check the harness between body integrated unit and trunk opener button.

   Connector & terminal 

   (i171) No. 6 - (R294) No. 1:

Is harness normal?

Yes:  Go to  3.

No:  Repair or replace the harness.

Measure the resistance between trunk opener button connector and chassis ground.

Connector & terminal 

(R294) No. 2 - Chassis ground:

Is the resistance less than 10 Ω?

Yes:  Go to  4.

No:  Repair or replace the harness.

Measure the resistance between terminals both when trunk opener button is pressed and when not pressed.

Terminals 

No. 1 - No. 2:

Is the resistance less than 10 Ω when the switch is pressed and 1 MΩ or more when not pressed?

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

No:  Replace the trunk opener button. Ref. to SECURITY AND LOCKS>TRUNK OPENER BUTTON .