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.
CD-ROM Changer (To RTI Control Module)
Before taking any readings, see Connecting the breakout box and checking the ground terminal .
CD-ROM changer terminals L1-L6 correspond to #26-#31 on the breakout box.
| Control module terminal | Breakout box terminal | Signal type | Ignition on | Other |
|---|---|---|---|---|
| L1 | #26 | Clock signal from the CD-ROM changer | Digital signal | Melbus protocol |
| L2 | #27 | Data signal from CD-ROM changer | Digital signal | Melbus protocol |
| L3 | #28 | - | - | - |
| L4 | #29 | Busy signal from the CD-ROM changer | Digital signal | Melbus protocol |
| L5 | #30 | 15 supply | Ubat | - |
| L6 | #31 | - | - | - |
| H | Screen ground, cable to CD-ROM changer | Ulow | - | - |
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.
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