Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2016LEGACY 2.5IREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTENTERTAINMENT SYSTEMAUDIO SYSTEMINSPECTIONMODULE I/O SIGNAL
2016 Subaru Legacy 2.5i
Module I/O Signal
2016 Subaru Legacy 2.5iSECTION Module I/O Signal
Model with 6.2 inch displayΒ
- Power supply and speaker output terminal
Terminal No. Content Measuring condition Measurement value Note (i85) No. 1 FRONT-RH (+) - - - (i85) No. 2 FRONT-LH (+) - - - (i85) No. 3 ββ Chassis ground ACC ACC ON 11 - 15 V - (i85) No. 4 ββ Chassis ground +B Always 11 - 15 V - (i85) No. 5 FRONT-RH (-) - - - (i85) No. 6 FRONT-LH (-) - - - (i85) No. 7 ββ Chassis ground GND Always 0 V - (i85) No. 8 ANTENNA-ON - - - (i85) No. 9 N.C. - - - (i85) No. 10 ILLUMI (+) - - - (i131) No. 1 REAR-RH (+) - - - (i131) No. 2 REAR-LH (+) - - - (i131) No. 3 REAR-RH (-) - - - (i131) No. 4 N.C. - - - (i131) No. 5 ILLUMI (-) - - - (i131) No. 6 REAR-LH (-) - - - - Steering switch and AUX input terminal for microphone etc.
Terminal No. Content Measuring condition Measurement value Note (i192) No. 1 URAT - - - (i192) No. 2 REV - - - (i192) No. 3 BRIGHT - - - (i192) No. 4 MAC +B - - - (i192) No. 5 MIC (+) - - - (i192) No. 6 MIC-DET - - - (i192) No. 7 N.C. - - - (i192) No. 8 N.C. - - - (i192) No. 9 N.C. - - - (i192) No. 10 N.C. - - - (i192) No. 11 CAM + 6V - - - (i192) No. 12 CV (+) - - - (i192) No. 13 CV (-) (SHIELD) - - - (i192) No. 14 SHIELD-GND (AUX) - - - (i192) No. 15 ββ Chassis ground PKB At parking ON 1 V or less - (i192) No. 16 N.C. - - - (i192) No. 17 ββ Chassis ground SPD When the tire is rotating Pulse signal - (i192) No. 18 SHIELD-GND (MIC) - - - (i192) No. 19 MIC (-) - - - (i192) No. 20 GND (CAMERA) - - - (i192) No. 21 SW1 (+) - - - (i192) No. 22 SW2 (+) - - - (i192) No. 23 SW-GND - - - (i192) No. 24 N.C. - - - (i192) No. 25 AUX-ON - - - (i192) No. 26 AUX-R (+) - - - (i192) No. 27 AUX-LR (-) - - - (i192) No. 28 AUX-L (+) - - - Model with 7 inch displayΒ
Refer to "Control Module I/O Signal" of "INFOTAINMENT SYSTEM (DIAGNOSTICS)". < Ref. to ELECTRICAL SPECIFICATION , Control Module I/O Signal. >
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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.