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.
2014 Subaru BRZ PremiumFACTORY 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.