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
Turn ignition off. Remove driver's multiplex control unit from fuse/relay block, behind left kick panel. See DRIVER'S UNDERDASH FUSE/RELAY BOX under REMOVAL & INSTALLATION. See Fig 1 . Check terminals and contacts. Repair as necessary and retest system. If terminals and contacts are okay, perform input tests. If test results are as specified, go to SELF-DIAGNOSTIC 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.