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.
Diagnostic Mode 09 - Read Vehicle Information
Diagnostic Mode 09 makes it possible to access vehicle-specific information from the ECM and the TCM (where applicable).
Depending on scan tool and protocol used, Diagnostic Mode 09 and the information provided may be referred to by a different name.
Test Requirement
- No internal ECM related DTC's stored in memory.
Procedure
-- Connect the scan tool.
-- Switch the ignition on.
-- Select "Mode 09: Vehicle information".
-- Select the desired "Test-ID".
-- The information requested will be displayed on the scan tool screen.
The following table is a numerical list of all "Test-IDs" that may be selected.
| Test-ID | Diagnostic text |
|---|---|
| $02: | Vehicle identification number e.g. |
|
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| $04: | Calibration identification e.g. |
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| $06: | Calibration verification number (check sum) e.g. |
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| $08: | In Use Performance Tracking (CBUA/SULEV only) |
| $0A: | ECU module acronym and text name |
| Service Mode $0A | SUPPORTED |
-- Switch the ignition OFF.
NO RELATED
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.