Fig 1: Identifying AT Shift Lock Control Connector Terminals

Courtesy of SUBARU OF AMERICA, INC.

INPUT/OUTPUT SIGNAL REFERENCE

Item	Connector No.	Terminal No.	Input/Output signal
Item	Connector No.	Terminal No.	Measured value and measuring conditions
Battery power supply	B279	22	9 - 16 V
Battery power supply	B280	6	9 - 16 V
Ignition power supply	B280	1	10 - 15 V when ignition switch is at ON or START.
Ignition power supply	B280	7	10 - 15 V when ignition switch is at ACC.
TCM ("P" range)	B280	3	Pulse signal
TCM ("P" range)	B280	9	Pulse signal
Stop light switch	B280	2	9 - 16 V when stop light switch is ON. 0 V when stop light switch is OFF.
"P" range switch	B281	4	0 V when select lever is in "P" range. 9 - 16V when select lever is in other positions than "P" range.
Shift lock solenoid signal	B279	12	8.5 - 16 V when shift lock is released. 0 V when shift lock is operating.
Key warning switch signal	B279	2	9 - 16 V when key is inserted. 0 V when key is removed.
Key lock solenoid signal	B279	11	7.5 - 16 V when ignition switch is turned ON, with select lever in "P" range and brake switch ON. 0 V at other conditions than above.
Ground	i84	28	-
	B280	17
	B281	20
	B279	27

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