DTC P081A: Starter Disable Circuit Low: Notes

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

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.

Wiring diagram:

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

Fig 1: Engine Control System Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN STARTER RELAY (PUSH BUTTON START) CONNECTOR AND STARTER CUT RELAY CONNECTOR. Turn the ignition to OFF. Remove the starter relay (push button start). Remove the starter cut relay. Measure the resistance of harness between starter relay (push button start) connector and starter cut relay connector. Connector & terminal (B220) No. 18 - (i137) No. 8:	Is the resistance less than 1 Ω?	Go to step 2 .	Repair the open circuit in harness between starter relay (push button start) connector and starter cut relay connector.
2 CHECK HARNESS BETWEEN ECM AND STARTER CUT RELAY CONNECTOR. Disconnect the connector from ECM. Measure the resistance of harness between ECM connector and starter cut relay connector. Connector & terminal (B134) No. 62 - (B225) No. 2:	Is the resistance less than 1 Ω?	Go to step 3	Repair the open circuit of harness between ECM connector and starter cut relay connector.
3 CHECK STARTER CUT RELAY. Connect the battery to starter cut relay terminals No. 18 and No. 20. Measure the resistance between starter cut relay terminals. Terminals No. 18 - No. 21:	Is the resistance 1 MΩ or more?	Repair the poor contact of ECM connector.	Replace the starter cut relay. Ref. to RELAY AND FUSE