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Home >> Honda >> 2000 >> CR-V SE, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls Self-Diagnostics >> Diagnostic Tests >> DTC P1456: EVAP System Leak Detected >> EVAP Control Canister Vent Shut Valve Test

EVAP Control Canister Vent Shut Valve Test

  1. Disconnect vacuum hose from EVAP control canister filter as illustrated. See Fig 1 . Turn ignition on and apply vacuum to hose. If EVAP control canister vent shut valve holds a vacuum, go to next step. If EVAP control canister vent shut valve does not hold a vacuum, EVAP control canister vent shut valve is okay at this time. Perform vacuum hoses and connections test. See VACUUM HOSES & CONNECTIONS TEST  .
  2. Turn ignition off. Disconnect EVAP control canister vent shut valve connector. Check for continuity between ground and EVAP control canister vent shut valve harness connector terminal No. 1 (Light Green/White wire). If continuity exists, go to next step. If continuity does not exist, replace EVAP control canister vent shut valve and "O" rings.
  3. Disconnect PCM 32-pin connector "A". Check for continuity between ground and EVAP control canister vent shut valve harness connector terminal No. 1 (Light Green/White wire). If continuity exists, repair short in Light Green/White wire between EVAP control canister vent shut valve and PCM 32-pin connector "A" terminal No. 4. If continuity does not exist, substitute a known-good PCM and recheck. See SUBSTITUTING PCM in SELF-DIAGNOSTICS - INTRODUCTION article. If symptom or problem goes away, replace original PCM.
Fig 1: Locating EVAP Control Canister Filter Vacuum Hose
G96A09604Courtesy of AMERICAN HONDA MOTOR CO., INC.
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