Data Communication Module (DCM)

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Contents	Measuring condition	Standard
(i105) No. 1	-	-	-
(i105) No. 2	-	-	-
(i105) No. 3	LED GREEN	-	-
(i105) No. 4 ←→ Chassis ground	i-button	i-button OFF → ON	1.6 kΩ or more → Less than 1 Ω
(i105) No. 5 ←→ Chassis ground	SOS button	SOS button OFF → ON	1.6 kΩ or more → Less than 1 Ω
(i105) No. 6	DCM local CAN H	-	-
(i105) No. 7	(J) Vehicle external connection CAN-L	-	-
(i105) No. 8 ←→ Chassis ground	Ignition power supply	Ignition switch OFF → ON	Less than 1 V → 9 - 16 V
(i105) No. 9	-	-	-
(i105) No. 10 ←→ Chassis ground	Battery power supply	Always	9 - 16 V
(i105) No. 11	-	-	-
(i105) No. 12	-	-	-
(i105) No. 13	LED RED	-	-
(i105) No. 14 ←→ Chassis ground	GND	Always	Less than 1 Ω
(i105) No. 15	-	-	-
(i105) No. 16	DCM local CAN L	-	-
(i105) No. 17	(J) Vehicle external connection CAN-H	-	-
(i105) No. 18	Collision detection signal	-	-
(i105) No. 19	MUTE	-	-
(i105) No. 20 ←→ Chassis ground	ACC	Ignition switch OFF → ACC ON	Less than 1 V → 9 - 16 V
(i106) No. 1	Front speaker input LH -	-	-
(i106) No. 2	Front speaker output LH -	-	-
(i106) No. 3	Front speaker input RH -	-	-
(i106) No. 4	Front speaker output RH -	-	-
(i106) No. 5	MIC signal OUT	-	-
(i106) No. 6	MIC signal IN	-	-
(i106) No. 7 ←→ Chassis ground	SGND	Always	Less than 1 Ω
(i106) No. 8	MIC 5 V	-	-
(i106) No. 9	Front speaker input LH +	-	-
(i106) No. 10	Front speaker output LH +	-	-
(i106) No. 11	Front speaker input RH +	-	-
(i106) No. 12	Front speaker output RH +	-	-
(i106) No. 13 ←→ Chassis ground	MIC GND OUT	Always	Less than 1 Ω
(i106) No. 14	MIC GND IN	-	-
(i106) No. 15	-	-	-
(i106) No. 16	-	-	-