Fig 1: Relay And Fuse Box Connector Terminal Identification

Courtesy of SUBARU OF AMERICA, INC.

Item	Connector No.	Terminal No.	Input/Output signal
Item	Connector No.	Terminal No.	Measured value and measuring conditions
Battery power supply	B280	4	9 - 16 V
	B280	7
	B281	32
TCM ("P" range)	i171	2	Pulse signal (CAN communication)
TCM ("P" range)	i171	22	Pulse signal (CAN communication)
Stop light switch	B281	12	9 - 16 V when stop light switch is ON. Less than 1.5 V when stop light switch is OFF.
"P" range switch	i171	25	Less than 1.5 V when select lever is in "P" range. 9 - 16 V when select lever is in other positions than "P" range.
Solenoid unit output	i84	3	8.5 - 16 V when shift lock is released. Less than 1.5 V when shift lock is operating.
Key warning switch signal (Model without push button ignition switch)	i84	10	9 - 16 V when key is inserted. Less than 1.5 V when key is removed.
Key lock solenoid signal (Model without push button ignition switch)	B280	5	7.5 - 16 V when the key is inserted with the select lever shifted in positions other than "P" range. 0 V at other conditions than above.
Ground	i84	4	1 V or less
Ground	B280	2	1 V or less

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Electrical Specification