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 Control Unit Input Test
Remove right kick panel. Remove passenger's multiplex control unit and disconnect electrical connector(s). Inspect connector terminals for damage or corrosion. Repair or replace as necessary and retest system. If connections are okay, using a DVOM, perform passenger's control unit input test at passenger's underdash fuse/relay block socket(s). See Fig 1 or Fig 2 . On Accord, if all input tests are okay, go to DOOR CONTROL UNIT INPUT TEST . On Prelude, if all input tests are okay, replace passenger's multiplex control unit.
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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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