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.
Section 479 (Cruise Control System - Diagnostics): Pre-Check
- DIAGNOSIS SYSTEM
- Description
The ECM controls the cruise control function on this vehicle. Data of the cruise control or DTC can be read from the DLC3 of the vehicle. When cruise control function is malfunctioning the CRUISE main indicator does not light up but DTC inspection is performed.
Therefore, when the cruise control function seems to have a malfunction, use the hand-held tester or SST to check and troubleshoot it.
- Check the DLC3.
The vehicle's ECM uses the ISO 9141-2 for communication. The terminal arrangement of the DLC3 complies with the SAE J1962 and matches the ISO 9141-2 format.
- Description
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.