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.
2008 Lexus IS 350FACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
Result List of How to Proceed with Troubleshooting
RESULT REFERENCE
| Symptom | Suspected Area | See |
|---|---|---|
| The result of "HOW TO PROCEED WITH TROUBLESHOOTING" is "Open in CAN Main Bus Line" | Open in CAN Main Bus Line | OPEN IN CAN MAIN BUS LINE |
| 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 CHART
| Symptom | Suspected Area | See |
|---|---|---|
| "Engine" and "ECT" are not displayed on the Techstream | ECM Communication Stop Mode | ECM COMMUNICATION STOP MODE |
| "ABS/VSC/TRAC" is not displayed on the Techstream | Skid Control ECU Communication Stop Mode | SKID CONTROL ECU COMMUNICATION STOP MODE |
| "Steering Angle Sensor" is not displayed on the Techstream | Steering Angle Sensor Communication Stop Mode | STEERING ANGLE SENSOR COMMUNICATION STOP MODE |
| "Yaw Rate / Deceleration Sensor" is not displayed on the Techstream | Yaw Rate Sensor Communication Stop Mode | YAW RATE SENSOR COMMUNICATION STOP MODE |
| "Cruise Control (ACC)" is not displayed on the Techstream | Distance Control ECU Communication Stop Mode | DISTANCE CONTROL ECU COMMUNICATION STOP MODE |
| "SRS Airbag" is not displayed on the Techstream | Center Airbag Sensor Communication Stop Mode | CENTER AIRBAG SENSOR COMMUNICATION STOP MODE |
| "Pre-collision" is not displayed on the Techstream | Seat Belt Control ECU Communication Stop Mode | SEAT BELT CONTROL ECU COMMUNICATION STOP MODE |
| "EPS" is not displayed on the Techstream | Power Steering ECU Communication Stop Mode | POWER STEERING ECU COMMUNICATION STOP MODE |
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.