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.
2013 Subaru BRZ Premium, 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
- Symptom Tests
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.