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Home >> Acura >> 1990 >> Integra LS, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Code 14: Electronic Air Control Valve (EACV)
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Code 14: Electronic Air Control Valve (EACV)

NOTE: For wiring diagrams, see WIRING DIAGRAMS article. For vacuum diagrams, see VACUUM DIAGRAMS article.
  1. Turn ignition off. Remove hazard fuse in main fuse box for 10 seconds to reset ECU. Start engine and observe CHECK ENGINE and Led lights. If lights are off, problem is intermittent. Check for poor or loose connection at EACV and C318. Test drive and check again.
  2. If CHECK ENGINE light is on and LED indicates Code 14, turn ignition off. Disconnect 2-pin connector at EACV. Measure resistance between EACV terminals. If resistance is not 8-15 ohms, replace EACV. If resistance is as specified, go to next step.
  3. Check continuity to ground between each EACV terminal. If continuity exists, replace EACV. If not, turn ignition on. Measure voltage between Black/Yellow and Blue/Yellow wire terminals. If battery voltage is present, go to next step. If battery voltage is not present, go to step 5).
  4. Disconnect ECU connector "A". If battery voltage is now present, repair short in Blue/Yellow wire between ECU terminal A11 and EACV. If battery voltage is not present, substitute a known good ECU and recheck. If condition goes away, replace original ECU.
  5. Measure voltage between Black/Yellow EACV wire terminal and ground. If battery voltage is present, go to step 6). If not, repair open in Black/Yellow wire between the EACV and fuse No. 24.
  6. Turn ignition off. Reconnect 2-pin EACV connector. Connect ECU test harness connector "A" to ECU main harness side only. Turn ignition on. Measure voltage between ECU terminals A11 (positive) and A2 (negative). See Figure . If battery voltage is present, go to step 7). If not, repair open in Blue/Yellow wire between ECU terminal A11 and EACV.
  7. Connect and disconnect ECU terminals A11 to A2. Listen for clicking from EACV valve. If clicking is not heard, replace EACV valve. If clicking is heard, go to step 8).
  8. Substitute a known good EACV and recheck EACV. If okay, substitute a known good ECU and recheck. If condition is rectified, replace original ECU.
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