2020 Subaru Outback BaseFACTORY OEM SERVICE PROCEDURE

Body Integrated Unit

G13632792Courtesy of SUBARU OF AMERICA, INC.
Terminal No. Contents Measuring condition Standard
(B71) No. 1 ←→ Chassis ground BAT power supply (control) Always 9 - 16 V
(B71) No. 2 ←→ Chassis ground Turn light output, right front Right front turn signal OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(B71) No. 3 - - -
(B71) No. 4 ←→ Chassis ground BAT power supply (illumination) Always 9 - 16 V
(B71) No. 5 - - -
(B71) No. 6 - - -
(B71) No. 7 ←→ Chassis ground BAT power supply (tail) Always 9 - 16 V
(B71) No. 8 ←→ Chassis ground Turn light output, left front Left front turn signal OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(B71) No. 9 - - -
(B71) No. 10 ←→ Chassis ground Clearance/position light output Clearance/position light output OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(B71) No. 11 ←→ Chassis ground Illumination output Illumination OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(B71) No. 12 ←→ Chassis ground Key lock solenoid output
(Without keyless access with push button start system)		 Ignition key inserted, shift lever, P range β†’ other than P range Less than 1 V β†’ 9 - 16 V
(B72) No. 1 ←→ Chassis ground GND Always Less than 1 Ξ©
(B72) No. 2 - - -
(B72) No. 3 - - -
(B72) No. 4 ←→ Chassis ground BAT power supply (shift lock/key lock/turn light) Always 9 - 16 V
(B72) No. 5 ←→ Chassis ground DRL relay output DRL relay output OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(B72) No. 6 - - -
(B72) No. 7 - - -
(B72) No. 8 - - -
(B73) No. 1 - - -
(B73) No. 2 - - -
(B73) No. 3 ←→ Chassis ground Hood switch (closed side) Hood closed β†’ open Less than 1 V β†’ 9 - 16 V
(B73) No. 4 ←→ Chassis ground Hood switch (open side) Hood open β†’ close Less than 1 V β†’ 9 - 16 V
(B73) No. 5 - - -
(B73) No. 6 - - -
(B73) No. 7 ←→ Chassis ground BAT (backup) Always 9 - 16 V
(B73) No. 8 - - -
(B73) No. 9 ←→ Chassis ground Security horn output Security horn, not operating β†’ operating 9 - 16 V β†’ Less than 1 V
(B73) No. 10 - - -
(B73) No. 11 - - -
(B73) No. 12 - - -
(B73) No. 13 - - -
(B73) No. 14 ←→ Chassis ground EGI immobilizer communication Always
(Models without the keyless access with push button start system, and except for C0 and C5)		 1 MΞ© or more
(B73) No. 15 - - -
(B73) No. 16 ←→ Chassis ground Stop light switch Stop light switch OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(B73) No. 17 Body CAN (H) Except for sleep status(1) Serial communication
(B73) No. 18 - - -
(B73) No. 19 Body CAN (L) Except for sleep status(1) Serial communication
(B73) No. 20 - - -
(i81) No. 1 ←→ Chassis ground Tail light output Tail light output OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(i81) No. 2 ←→ Chassis ground Turn light output, left rear Left rear turn signal OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(i81) No. 3 ←→ Chassis ground Shift lock solenoid IG ON shift lever P range stop light switch OFF (brake pedal not depressed) β†’ ON (brake pedal depressed) Less than 1 V β†’ 9 - 16 V
(i81) No. 4 ←→ Chassis ground GND Always Less than 1 Ξ©
(i81) No. 5 ←→ Chassis ground Turn light output, right rear Right rear turn signal OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(i81) No. 6 ←→ Chassis ground Door lock output (driver's seat unlock) When UNLOCK signal is output Less than 1 V β†’ 9 - 16 V
(i81) No. 7 ←→ Chassis ground Electric fuel unlock output When UNLOCK signal is output Less than 1 V β†’ 9 - 16 V
(i81) No. 8 - - -
(i81) No. 9 ←→ Chassis ground Room light output Door closed β†’ open with the light side SW interlocked with the door 9 - 16 V β†’ Less than 1 V
(i81) No. 10 - - -
(i82) No. 1 - - -
(i82) No. 2 - - -
(i82) No. 3 ←→ Chassis ground Immobilizer antenna (A) When ignition key inserted (Models without the keyless access with push button start system, and except for C0 and C5) Pulse generation
(i82) No. 4 ←→ Chassis ground Immobilizer antenna (B) When ignition key inserted (Models without the keyless access with push button start system, and except for C0 and C5) Pulse generation
(i82) No. 5 - - -
(i82) No. 6 ←→ Chassis ground Opener switch (rear gate/trunk) Rear gate/trunk opener button OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 7 ←→ (i82) No. 8 Front wiper intermittent sensitivity adjustment 0 - 6 kΞ© Always
(i82) No. 8 ←→ Chassis ground Front wiper intermittent sensitivity adjustment GND - -
(i82) No. 9 ←→ Chassis ground Key ring illumination output Key ring OFF β†’ ON (With key ring illumination and without keyless access with push button start system) Less than 1 V β†’ 9 - 16 V
(i82) No. 10 ←→ Chassis ground Map light output Door open β†’ closed with the light side SW interlocked with the door 9 - 16 V β†’ Less than 1 V
(i82) No. 11 - - -
(i82) No. 12 ←→ Chassis ground Manual unlock switch Door unlock switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 13 ←→ Chassis ground Door switch (passenger's seat) Passenger's door closed β†’ open 9 - 16 V β†’ Less than 1 V
(i82) No. 14 ←→ Chassis ground Door switch (rear seat LH) Rear seat LH door closed β†’ open 9 - 16 V β†’ Less than 1 V
(i82) No. 15 ←→ Chassis ground Door switch (rear gate/trunk) Rear gate/trunk closed β†’ open 9 - 16 V β†’ Less than 1 V
(i82) No. 16 - - -
(i82) No. 17 - - -
(i82) No. 18 - - -
(i82) No. 19 ←→ Chassis ground Key-in switch (without keyless access with push button start system), ACC switch (with keyless access with push button start system) Ignition key not inserted β†’ inserted (without keyless access with push button start system), ACC switch OFF β†’ ON (with keyless access with push button start system) Less than 1 V β†’ 9 - 16 V
(i82) No. 20 ←→ Chassis ground Security indicator light output When security light is illuminating Pulse generation
(i82) No. 21 - - -
(i82) No. 22 - - -
(i82) No. 23 - - -
(i82) No. 24 - - -
(i82) No. 25 - - -
(i82) No. 26 ←→ Chassis ground Dimmer Hi switch Dimmer switch Hi beam OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 27 ←→ Chassis ground Door switch (rear seat RH) Rear seat RH door closed β†’ open 9 - 16 V β†’ Less than 1 V
(i82) No. 28 ←→ (i82) No. 8 Illumination sensor signal Lighting AUTO switch ON 0 - 5 V
(i82) No. 29 - - -
(i82) No. 30 - - -
(i82) No. 31 - - -
(i82) No. 32 ←→ Chassis ground Manual lock switch Door lock switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 33 ←→ Chassis ground Turn signal switch right Turn signal switch right OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 34 ←→ (i82) No. 8 Illumination sensor power supply output Ignition switch OFF β†’ ON 1 - 5 V
(i82) No. 35 ←→ Chassis ground Lighting I switch Lighting switch 1 OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 36 ←→ Chassis ground Dimmer Pass switch Dimmer switch Pass OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 37 ←→ Chassis ground Turn hazard switch Turn hazard switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 38 ←→ Chassis ground Turn signal switch left Turn signal switch left OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i82) No. 39 ←→ Chassis ground Door switch (driver's seat) Driver's door closed β†’ open 9 - 16 V β†’ Less than 1 V
(i82) No. 40 ←→ Chassis ground P range switch Shift lever, other than P range β†’ P range 9 - 16 V β†’ Less than 1 V
(i83) No. 1 ←→ Chassis ground Front wiper Lo switch Front wiper Lo switch OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(i83) No. 2 LIN communication 2 Except for sleep status(1) Serial communication
(i83) No. 3 ←→ Chassis ground Rear wiper switch (INT) Rear wiper switch INT OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 4 - - -
(i83) No. 5 - - -
(i83) No. 6 ←→ Chassis ground Door lock status switch passenger's seat Passenger's door lock β†’ unlock (with keyless access with push button start system) 9 - 16 V β†’ Less than 1 V
(i83) No. 7 - - -
(i83) No. 8 - - -
(i83) No. 9 - - -
(i83) No. 10 ←→ Chassis ground Rear washer switch Rear washer switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 11 - - -
(i83) No. 12 ←→ Chassis ground Front washer switch Front washer switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 13 - - -
(i83) No. 14 - - -
(i83) No. 15 - - -
(i83) No. 16 - - -
(i83) No. 17 ←→ Chassis ground Front wiper Hi switch Front wiper Hi switch OFF β†’ ON Less than 1 V β†’ 9 - 16 V
(i83) No. 18 LIN communication 1 Except for sleep status(1) Serial communication
(i83) No. 19 ←→ Chassis ground Rear wiper switch (ON) Rear wiper switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 20 ←→ Chassis ground Lighting switch AUTO Lighting switch AUTO OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 21 ←→ Chassis ground Front wiper AUTO/INT switch Front wiper AUTO/INT switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 22 ←→ Chassis ground Door lock status switch driver's seat Driver's door lock β†’ unlock (with keyless access with push button start system) 9 - 16 V β†’ Less than 1 V
(i83) No. 23 - - -
(i83) No. 24 - - -
(i83) No. 25 ←→ Chassis ground Hands-free power rear gate OFF switch Hands-free power rear gate OFF switch OFF β†’ ON (with handsfree sensor) 9 - 16 V β†’ Less than 1 V
(i83) No. 26 ←→ Chassis ground Front fog light switch Front fog light switch OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 27 - - -
(i83) No. 28 ←→ Chassis ground Lighting II switch Lighting switch 2 OFF β†’ ON 9 - 16 V β†’ Less than 1 V
(i83) No. 29 - - -
(i83) No. 30 ←→ Chassis ground Luggage/trunk light output Sedan: Trunk closed β†’ open
OUTBACK: Rear gate closed β†’ open with the light side SW interlocked with the door		 9 - 16 V β†’ Less than 1 V
(i83) No. 31 ←→ Chassis ground Collision detection signal IG ON Pulse output
(i83) No. 32 ←→ Chassis ground Power rear gate driver's opener button Power rear gate driver's opener button OFF β†’ ON (with power rear gate) 9 - 16 V β†’ Less than 1 V
(1) CAN sleep state: Hold on for approx. one minute with ignition switch OFF and all the doors and rear gate closed.
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When to See a Mechanic

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

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.