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Home >> Subaru >> 2017 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (P0171 To P0685) (2.0L) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0616 Starter Relay "A" Circuit Low >> Model With Push Button Start

Model With Push Button Start

Immediately at fault recognition

TROUBLE SYMPTOM: 

Failure of engine to start

CAUTION:
  • After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.
  • Use the check board when measuring the ECM terminal voltage and resistance.

WIRING DIAGRAM: 

Engine Electrical System <Ref. to WIRING DIAGRAM , Engine Electrical System.>

Fig 1: Starter (Switch) Request Circuit Wiring Diagram
G11577038Courtesy of SUBARU OF AMERICA, INC.
Step Check Yes No
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? Go to step . 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? Repair the poor contact of ECM connector. Repair the short circuit to ground in harness between ECM connector and starter relay 1 connector.