Control Module HVAC: Testing and Inspection

1984 Honda Accord L4-1829cc 1800 ES,ETSECTION Testing and Inspection

Fig. 1 Blower Motor Controller Location (Typical):





1. Remove blower controller from blower, Fig. 1.


Fig. 2 Blower motor controller test connections.:





2. Connect IG wire to battery positive terminal and E wire to battery ground terminal, Fig. 2.
3. Attach ohmmeter probes to X and Y wires, Fig. 2.
4. When connecting the SW wire to battery negative terminal, there should be continuity between X and Y terminals for 3-7 seconds.





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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.