ELC Relay Test

1987 Buick Century Custom, 4D Sedan, 2.5 RSECTION ELC Relay Test

Connect a fused jumper wire at the ELC height sensor connector, between Yellow wire terminal (No. 3) and ground. If compressor begins to run, reconnect connector and refer to SYMPTOM DIAGNOSISΒ  . If compressor does not run, replace ELC relay.

RENDER: 1.0x

NO RELATED

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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.