Model With Push Button Start

Immediately at fault recognition

Trouble symptom: 

Failure of engine to start

Wiring diagram: 

Engine Electrical System NON-TURBO MODEL (WITH PUSH BUTTON START) Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM>NON-TURBO MODEL (WITH PUSH BUTTON START) .

Fig 1: Starter Relay A Circuit Low - Wiring Diagram (Model With Push Button Start)

Courtesy of SUBARU OF AMERICA, INC.

1. CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR  .
   1. Turn the ignition to OFF.
   2. Disconnect the connector from ECM.
   3. Remove the starter relay.
   4. Measure the resistance of harness between ECM connector and starter relay connector.
   NOTE: Place the select lever in "P" range or "N" range.

   Connector & terminal 

   (B134) No. 5 - (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 connector
     • Poor contact of coupling connector
2. CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR  .
   1. Disconnect the connector from starter motor.
   2. Measure the resistance between ECM connector and chassis ground.

   Connector & terminal 

   (B134) No. 5 - 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 connector.
3. OUTLINE OF DIAGNOSIS 
   • Model without push button start

     Detect abnormal continuity in the starter SW1.

     Judge as OFF NG when the starter SW 1 signal remains OFF.

   • Model with push button start

     Detect abnormal continuity in the starter SW 2.

     Judge as OFF NG when the starter SW 2 signal remains OFF.