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.
Driver's Multiplex Control Unit
Remove driver's multiplex control unit from fuse/relay block located behind driver's kick panel. Disconnect driver's multiplex control unit connector and check for bent, loose or corroded terminals. Repair as necessary. If all terminals are okay, perform input tests at driver's multiplex control unit and fuse/relay block connectors. See Fig 1 . If all input tests are okay, one of the control units may be faulty. Substitute known-good control unit for control unit most closely related to problem. If problem still exists, substitute known-good control unit for next most closely related control unit. Retest system.
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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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