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.
2016 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
Entry Start System Start System (Keyless Start)
- Entry & Start System (Start Function)
- Parts Location
- Circuit Figure
- Description Of Functions
- How To Proceed With Troubleshooting
- Function Inspection
- Customize Parameters
- Problem Symptoms Table
- ECM Terminal Arrangement
- Diagnosis System
- DTC Check/Clear
- Current Data Display & Save/System Operation Check Mode
- Diagnostic Trouble Code Chart
- DTC B2271: IGN Fuse Blown Or IGN Circuit Fault
- DTC B2274: ACC Circuit Abnormal
- DTC B2275: STSW Circuit Abnormal
- DTC B2276: ACCR Signal Abnormal
- DTC B2277: Submerging Circuit Abnormal
- DTC B2282: Vehicle Speed Signal Abnormal; DTC B2283 Vehicle Speed Sensor Fault Detection
- DTC B2284: Brake Signal (Cable-Information Does Not Match To BEAN-Information)
- DTC B2285: Steering Lock Position Signal Abnormal
- DTC B2286: Run Able Signal (Cable-Information Does Not Match To BEAN-Information)
- DTC U0073: Control module communication bus "A" off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0101: Lost Communication With TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0140: Lost Communication With Body Control Module; DTC U0155: Nonarrival Of H-CAN Data (METER); DTC U0401: Invalid Data Received From ECM/PCM "A"; DTC U0422: Invalid Data Received From Body Control Module
- The Engine Does Not Start
- The Power Does Not Turn On (Does Not Change To Both ACC ON Or IG ON)
- The Power Does Not Turn ON (Power Status Changes To ACC ON But Not To IG ON)
- The Power Does Not Turn ON (Power Status Changes To IG ON But Not To ACC ON)
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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