1983 Honda Prelude AutomaticFACTORY OEM SERVICE PROCEDURE

Control Unit Connector

Check for voltage at control unit connector with ignition switch "ON". There should be voltage. If there is no voltage, check Blue wire between ignition coil and control unit. Check Black wire for continuity between control unit and ground. It should have continuity.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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