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Home >> Honda >> 2000 >> Prelude Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1457: EVAP System Leak Detected (Canister System) >> EVAP Purge Control Solenoid Valve Test
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EVAP Purge Control Solenoid Valve Test

  1. Disconnect vacuum hose, located between EVAP purge control solenoid valve and intake manifold. Using backprobe set, connect a fused jumper wire between ground and PCM 32-pin connector "A" terminal No. 15 (Red/Yellow wire). See Figure . Turn ignition on. Using vacuum pump, slowly apply vacuum to EVAP purge control solenoid valve. If solenoid valve holds vacuum, go to next step. If solenoid valve does not hold vacuum, solenoid valve is okay at this time. Perform EVAP bypass solenoid valve test. See EVAP BYPASS SOLENOID VALVE TEST  .
  2. Turn ignition off. Disconnect EVAP purge control solenoid valve connector. Check for continuity between ground and EVAP purge control solenoid valve harness connector terminal No. 2 (Red/Yellow wire). If continuity exists, go to next step. If continuity does not exist, repair open in Red/Yellow wire between EVAP purge control solenoid valve and PCM 32-pin connector "A" terminal No. 15. See appropriate wiring diagram in WIRING DIAGRAMS article.
  3. Turn ignition on. Measure voltage between ground and EVAP purge control solenoid valve harness connector terminal No. 1 (Black/Yellow wire). If battery voltage exists, replace solenoid valve. If battery voltage does not exist, repair open in Black/Yellow wire between EVAP purge control solenoid valve and No. 14 PCM (15-amp) fuse. See appropriate wiring diagram in WIRING DIAGRAMS article.
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