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.
Passenger's Multiplex Control Unit
Turn ignition off. Remove passenger's multiplex control unit from fuse/relay block, behind right kick panel. See PASSENGER'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, perform testing procedure on driver's multiplex control unit. See DRIVER'S MULTIPLEX CONTROL UNIT
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.