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.
Problem Symptoms Table
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Result List of Check CAN Bus Line
| Symptom | Suspected Area | Reference |
|---|---|---|
| The result of "How to Proceed with Troubleshooting" is "Open in CAN Main Wire" | Open in CAN Main Wire | OPEN IN CAN MAIN WIRE |
| The result of "How to Proceed with Troubleshooting" is "Short in CAN Bus Lines" | Short in CAN Bus Lines | SHORT IN CAN BUS LINES |
| The result of "How to Proceed with Troubleshooting" is "Short to B+ in CAN Bus Line" | Short to B+ in CAN Bus Line | SHORT TO B+ IN CAN BUS LINE |
| The result of "How to Proceed with Troubleshooting" is "Short to GND in CAN Bus Line" | Short to GND in CAN Bus Line | SHORT TO GND IN CAN BUS LINE |
| The result of "How to Proceed with Troubleshooting" is "Open in One Side of CAN Branch Line" | Open in One Side of CAN Branch Line | OPEN IN ONE SIDE OF CAN BRANCH LINE |
Communication Stop Mode Table
| Symptom | Suspected Area | Reference |
|---|---|---|
| ABS/VSC/TRC not displayed on Techstream | Skid Control ECU Communication Stop Mode | SKID CONTROL ECU COMMUNICATION STOP MODE |
| Air Conditioner not displayed on Techstream | Air Conditioning Amplifier Communication Stop Mode | AIR CONDITIONING AMPLIFIER COMMUNICATION STOP MODE |
| Engine not displayed on Techstream | ECM Communication Stop Mode | ECM COMMUNICATION STOP MODE |
| Main Body not displayed on Techstream | Main Body ECU Communication Stop Mode | MAIN BODY ECU COMMUNICATION STOP MODE |
| Combination Meter not displayed on Techstream | Combination Meter ECU Communication Stop Mode | COMBINATION METER ECU COMMUNICATION STOP MODE |
| SRS Airbag not displayed on Techstream | Center Airbag Sensor Communication Stop Mode | CENTER AIRBAG SENSOR COMMUNICATION STOP MODE |
| Steering Angle Sensor not displayed on Techstream | Steering Angle Sensor Communication Stop Mode | STEERING ANGLE SENSOR COMMUNICATION STOP MODE |
| Four Wheel Drive Control not displayed on Techstream* 1 | 4WD Control ECU Communication Stop Mode | 4WD CONTROL ECU COMMUNICATION STOP MODE |
| Accessory Gateway not displayed on Techstream*2 | Bus Buffer ECU Communication Stop Mode | BUS BUFFER ECU COMMUNICATION STOP MODE |
| Air Suspension not displayed on Techstream*3 | Suspension Control ECU Communication Stop Mode | SUSPENSION CONTROL ECU COMMUNICATION STOP MODE |
| Cruise Control (ACC) not displayed on Techstream*4 | Distance Control ECU Communication Stop Mode | DISTANCE CONTROL ECU COMMUNICATION STOP MODE |
| PPS not displayed on Techstream | Power steering ECU Communication Stop Mode | POWER STEERING ECU COMMUNICATION STOP MODE |
HINT:
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NO RELATED
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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.