Power Will Not Turn On (Accessory Does Not Turn On, But Ignition Turns On)

CAUTION:

When the keyless access control module is replaced with a new unit, and the battery ground terminal is connected, it will become ignition ON. Also, if the battery is disconnected, it will resume to a condition with the battery cut off.
When the keyless access control module is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".

WIRING DIAGRAM:

Push button start system <Ref. to STARTING/CHARGING , Push Button Start System.>

Engine type: FA

Fig 1: Push Button Start System - Wiring Diagram (FA)
Courtesy of SUBARU OF AMERICA, INC.
Engine type: EJ

Fig 2: Push Button Start System - Wiring Diagram (EJ)
Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FUSE . Check the fuse.	Is the fuse OK?	Go to step 2 .	Replace the fuse.
2 CHECK CONNECTOR . Check the engagement of each connector and for any deformation or looseness.	Are the connectors and terminals normal?	Go to step 3 .	Repair the connector, or replace harness.
3 CHECK WIRING HARNESS . Disconnect the keyless access control module connector. Using a tester, measure the voltage between the keyless access control module connector and chassis ground. Connector & terminal (B572) No. 2 (+) - Chassis ground (-):	Is the voltage between 8 V and 16 V?	Go to step 4 .	Repair or replace the open circuit of harness.
4 CHECK WIRING HARNESS . Using a tester, check continuity between the keyless access control module connector and chassis ground. Connector & terminal (B572) No. 11 - Chassis ground:	Is there continuity?	Go to step 5 .	Repair or replace the open circuit of harness.
5 CHECK ACCESSORY RELAY (PUSH BUTTON START) . Check the accessory relay (push button start). <Ref. to INSPECTION , Accessory Relay (Push Button Start).>	Is the relay OK?	Go to step 6 .	Replace the relay.
6 CHECK WIRING HARNESS . Disconnect the keyless access control module connector and the accessory relay (push button start). Using a tester, check continuity between the keyless access control module connector and accessory relay (push button start). Connector & terminal (B574) No. 4 - (B426) No. 1:	Is there continuity?	Go to step 7 .	Repair or replace the open circuit of harness.
7 CHECK WIRING HARNESS . Using a tester, check continuity between the keyless access control module connector and chassis ground. Connector & terminal (B574) No. 4 - Chassis ground:	Is there continuity?	Repair or replace the short circuit of the harness.	Go to step 8 .
8 CHECK KEYLESS ACCESS CONTROL MODULE . Connect the keyless access control module connector. Using a tester, measure the voltage between the keyless access control module connector and chassis ground when the ignition is turned from OFF to ON. Connector & terminal (B574) No. 4 (+) - Chassis ground (-):	Did the voltage change from 1 V or less → +B-2 V or more?	System is normal.	Replace the keyless access control module. <Ref. to KEYLESS ACCESS CONTROL MODULE .>