CHECK SUBARU SELECT MONITOR GROUND CIRCUIT.

1) Disconnect the connectors from the ECM.

2) Measure the resistance of harness between data link connector and ECM.

Connector & terminal

2.0 L model

(B40) No. 4 — (B136) No. 33:
(B40) No. 5 — (B136) No. 33:

2.5 L model

(B40) No. 4 — (B136) No. 6:
(B40) No. 5 — (B136) No. 6:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair the open circuit of harness between data link connector and ECM.