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 MANUALSSCION2015FR-S AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCAN COMMUNICATION SYSTEM (DIAGNOSTICS & CIRCUIT TESTS)
2015 Scion FR-S Automatic Trans
Can Communication System (Diagnostics & Circuit Tests)
2015 Scion FR-S Automatic TransSECTION Can Communication System (Diagnostics & Circuit Tests)
- Can Communication System
- Precaution [05/2014 - ]
- Components Location [05/2014 - ]
- System Diagram [05/2014 - ]
- System Description [05/2014 - ]
- How To Proceed With Troubleshooting [05/2014 - ]
- Problem Symptoms Table [05/2014 - ]
- Terminals Of Ecu [05/2014 - ]
- Diagnosis System [05/2014 - ]
- Circuit Tests
- Skid Control ECU Communication Stop Mode [05/2014 - ]
- Power Steering ECU Communication Stop Mode [05/2014 - ]
- Steering Angle Sensor Communication Stop Mode [05/2014 - ]
- ECM Communication Stop Mode [05/2014 - ]
- Transmission Control ECU Communication Stop Mode [05/2014 - ]
- Main Body ECU Communication Stop Mode [05/2014 - ]
- Combination Meter ECU Communication Stop Mode [05/2014 - ]
- Center Airbag Sensor Communication Stop Mode [05/2014 - ]
- Bus Buffer ECU Communication Stop Mode [05/2014 - ]
- Open in CAN Main Bus Line [05/2014 - ]
- Check CAN Bus Lines for Short Circuit [05/2014 - ]
- Check CAN Bus Line for Short to +B [05/2014 - ]
- Check CAN Bus Line for Short to GND [05/2014 - ]
- Open in One Side of CAN Branch Line [05/2014 - ]
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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.