Model With Push Button Start

Immediately at fault recognition

Trouble symptom: 

Failure of engine to start

• Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram: 

Engine Electrical System Ref. 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.
      NOTE: For CVT model, place the select lever in "P" range or "N" range.

      Connector & terminal 

      (B134) No. 8 - (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
   • Poor contact of coupling connector
2. CHECK HARNESS BETWEEN ECM AND STARTER RELAY 1 CONNECTOR  .
   1. Disconnect the connector from starter motor.
   2. Measure the resistance between the ECM connector and engine ground.

      Connector & terminal 

      (B134) No. 8 - Engine 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.