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Home >> Acura >> 1991 >> Legend Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Control System >> EACV
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Idle Control System: EACV

  1. Turn engine off, and disconnect 2-wire connector on EACV. Measure resistance between both terminals on EACV. Replace EACV if resistance is not 8-15 ohms. If resistance is okay, check each terminal for continuity to ground. If continuity is present, replace EACV.
  2. If continuity is not present, turn ignition on. Measure voltage between Black/Yellow and Blue/Red wire terminals of EACV connector. If battery voltage is not present, go to next step.
  3. If battery voltage is not present, repair open in Black/Yellow wire between EACV connector and main relay located on left side of firewall. If battery voltage is present, connect PGM-FI test harness connector "A" to main wire harness only; DO NOT  connect to ECU.
  4. Connect and disconnect jumper wire between terminals A9 and A26. If EACV does not click, replace EACV. If EACV clicks, substitute a known good EACV, and recheck symptom.
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