Electrical Specification

Fig 1: Identifying Engine Control Module Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

ENGINE CONTROL MODULE CONNECTOR TERMINALS VOLTAGE SPECIFICATION

Description		Connector No.	Terminal No.	Signal (V)		NOTE
Description		Connector No.	Terminal No.	Ignition SW ON (engine OFF)	Engine ON (idling)	NOTE
Brake vacuum sensor	Signal	B134	27	1 - 3.8	1 - 3.8	-
	Power supply	B135	22	5	5	-
	Ground	B135	30	0	0	-
Self-shutoff control		B136	23	0	0	-
Brake vacuum pump	Relay drive	B136	8	10 - 13 (When the pump is OFF)	12 - 14 (When the pump is ON)	-
	Relay drive	B136	8	0 (When the pump is ON)	0 (When the pump is ON)	-
	Electric load	B135	25	0 (When the pump is OFF)	0 (When the pump is OFF)	-
	Electric load	B135	25	10 - 13 (When the pump is ON)	12 - 14 (When the pump is ON)	-
SSM communication line		B136	16	1 or less ←→ 4 or more	1 or less ←→ 4 or more	-