Model With Push Button Start

DTC detecting condition: 

Immediately at fault recognition

Trouble symptom:  Failure of engine to start

Wiring diagram: 

Engine Electrical System. Refer to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK HARNESS BETWEEN ECM AND STARTER RELAY 1 CONNECTOR. 
   1. Turn the ignition to OFF.
   2. Disconnect the connector from ECM.
   3. Remove the starter relay 1.
   4. Measure the resistance of harness between ECM connector and starter relay 1 connector.

      Connector & terminal 

      (B136) No. 27 - (B225) No. 1:

      Is the resistance less than 1 Ω?

      Yes:  Go to  2.

      No:  Repair the harness and connector.

      NOTE: In this case, repair the following item:

      • Open circuit of harness between ECM connector and starter relay 1 connector
      • Blown out of fuse
2. CHECK HARNESS BETWEEN ECM AND STARTER RELAY 1 CONNECTOR. 
   1. Disconnect the connector from starter motor.
   2. Measure the resistance between ECM connector and chassis ground.

      Connector & terminal 

      (B136) No. 27 - Chassis ground:

      Is the resistance 1 MΩ or more?

      Yes:  Repair the poor contact of ECM connector.

      No:  Repair the short circuit to ground in harness between ECM connector and starter relay 1 connector.