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.
Selecting The Test
Selection of the DATA?, INPUTS?, OUTPUTS? or OVERRIDE? test types will result in the first available test being displayed. If dashes appears in ECC, this indicates that test is not allowed with the engine running. While selecting a specific test, any of the following actions may be taken to control the display:
- Depressing OFF button on the ECC will stop the test selection process and return the display to the next available test type for the selected system.
- Depressing LO button on the ECC will display the next smaller test number for the selected test type. If this button is pressed with the lowest test number displayed, the highest test number will then appear.
- Depressing HI button on the ECC will display the next highest test number for the selected test type. If this button is pressed with the highest test number displayed, the lowest test number will then appear.
- Depressing RESET/RECALL button on the DIC will halt diagnostics and return system to normal display and operation.
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.