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Home >> Subaru >> 2017 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (P0171 To P0685) (2.5L) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0616 Starter Relay "A" Circuit Low >> Model Without Push Button Start

Model Without Push Button Start

DTC DETECTING CONDITION: 

Immediately at fault recognition

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.>.

WIRING DIAGRAM: 

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

Fig 1: Starter Relay A Circuit Low Wiring Diagram (Model Without Push Button Start)
G11574200Courtesy of SUBARU OF AMERICA, INC.
Step Check Yes No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.  Is any other DTC displayed? Check DTC using "List of Diagnostic Trouble Code (DTC)". <Ref. to List of Diagnostic Trouble Code (DTC) .> Go to step .
2 CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Remove the starter relay.
  3. Disconnect the connector from ECM.
  4. Disconnect the connector from starter motor.
  5. Measure the resistance of harness between ECM connector and starter relay connector.

    Connector & terminal 

    (B136) No. 16 - (B225) No. 1: 

Is the resistance less than 1 Ω? Go to step 3. 
NOTE: Check the following item and repair or replace if necessary.
  • Open circuit of harness between ECM connector and starter relay connector
  • Blown out of fuse
3 CHECK HARNESS BETWEEN ECM AND STARTER RELAY CONNECTOR. 
Measure the resistance between ECM connector and chassis ground.
Connector & terminal 
(B136) No. 16 - Chassis 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 connector.