CHECK OUTPUT SIGNAL OF ECM.

1) Turn the ignition switch to OFF.

2) Connect the test mode connector.

3) Turn the ignition switch to ON.

4) Check the voltage between ECM terminal and chassis ground during the radiator fan relay operation.

NOTE:

The radiator fan relay can be operated using the Subaru Select Monitor. Regarding the procedures, refer to “Compulsory Valve Operation Check Mode”.

Connector & terminal

(B136) No. 29 (+) — Chassis ground (−):

(B136) No. 18 (+) — Chassis ground (−):

QUESTION

Does the voltage change between 0 — 10 V?

Yes No

Repair the poor contact of ECM connector.