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Code 14 - Idle Control System (EACV)

  1. Turn ignition off. Remove hazard fuse at battery positive terminal for 10 seconds to reset ECU.
  2. Start engine and observe Check Engine or PGM-FI warning light. If light is off, problem is intermittent. Test drive and recheck. If light is on, stop engine. Disconnect Electronic Air Control Valve (EACV) connector. Check resistance between the 2 connector terminals on valve.
  3. Resistance should be 8-15 ohms. If not within specification, replace Electronic Air Control Valve (EACV). If resistance is within specification, proceed to next step.
  4. Check for continuity to ground on each EACV connector terminal. If continuity exists, replace EACV. If no continuity exists, turn ignition on. Connect a voltmeter between Black/Yellow (pos.) and Blue/Yellow (neg.) terminals.
  5. Check for battery voltage. If no battery voltage exists, proceed to step 6). If battery voltage exists, disconnect connector from ECU and again check for battery voltage. If battery voltage still does not exist, proceed to step 10). If battery voltage now exists, repair short in Blue/Yellow and Green/Red wire between ECU and EACV.
  6. If no battery voltage in step 4), measure voltage between Black/Yellow terminal and body ground. If battery voltage exists, proceed to step 7). If battery voltage still doesn't exist, check No. 4 fuse and/or repair open Black/Yellow wire between fuse and EACV.
  7. If battery voltage exists, turn ignition off. Reconnect EACV connector. Connect system checker harness "A" connector to main wire harness only, not ECU.
  8. Turn ignition on. Using a voltmeter, measure voltage between connector terminals A11 (pos.) and A2 (neg.). If battery voltage does not exist, repair open in wire between ECU terminal A11 and EACV. If battery voltage exists, connect and disconnect terminal A11 to A2. If EACV does not click when connector is connected and disconnected, replace EACV. If EACV clicks, go to step 10).
  9. Substitute a known good ECU. If condition is rectified, replace original ECU.
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