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 MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCAN COMMUNICATION SYSTEM (EXCEPT HV) - CIRCUIT TESTS (2 OF 4)
2020 Toyota RAV4 XLE, AWD
Can Communication System (Except HV) - Circuit Tests (2 Of 4)
2020 Toyota RAV4 XLE, AWDSECTION Can Communication System (Except HV) - Circuit Tests (2 Of 4)
- CAN COMMUNICATION SYSTEM (for Gasoline Model)
- DCM Communication Stop Mode [11/2018 - 10/2019]
- DCM Communication Stop Mode [10/2019 - ]
- Power Back Door ECU Communication Stop Mode [11/2018 - 10/2023]
- Power Back Door ECU Communication Stop Mode [10/2023 - ]
- Driver Seat Control ECU Communication Stop Mode [11/2018 - ]
- Millimeter Wave Radar Sensor Communication Stop Mode [11/2018 - 08/2020]
- Millimeter Wave Radar Sensor Communication Stop Mode [08/2020 - ]
- Rear Television Camera Communication Stop Mode [11/2018 - 12/2021]
- Rear Television Camera Communication Stop Mode [12/2021 - 10/2022]
- Rear Television Camera Communication Stop Mode [10/2022 - ]
- Restraints Occupant Classification System Module Communication Stop Mode [11/2018 - ]
- Grille Shutter Communication Stop Mode [11/2018 - 12/2021]
- Open in Bus 1 Main Bus Line [11/2018 - 12/2021]
- Open in Bus 1 Main Bus Line [12/2021 - ]
- Check Bus 1 Lines for Short Circuit [11/2018 - 08/2020]
- Check Bus 1 Lines for Short Circuit [08/2020 - 12/2021]
- Check Bus 1 Lines for Short Circuit [12/2021 - 10/2022]
- Check Bus 1 Lines for Short Circuit [10/2022 - ]
- Check Bus 1 Line for Short to +B [11/2018 - 08/2020]
- Check Bus 1 Line for Short to +B [08/2020 - 12/2021]
- Check Bus 1 Line for Short to +B [12/2021 - 10/2022]
- Check Bus 1 Line for Short to +B [10/2022 - ]
- Check Bus 1 Line for Short to GND [11/2018 - 08/2020]
- Check Bus 1 Line for Short to GND [08/2020 - 12/2021]
- Check Bus 1 Line for Short to GND [12/2021 - 10/2022]
- Check Bus 1 Line for Short to GND [10/2022 - ]
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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.