DTC P0443 - EVAP Control System Purge Control Valve Circuit Malfunction
NOTE:
For component terminal identification, see TERMINAL IDENTIFICATION
in this article. For wiring diagrams, see WIRING DIAGRAMS - 2.0L TURBO
article.
- Label and disconnect both vacuum hoses from purge solenoid valve. Disconnect purge solenoid valve electrical connector. Connect hand vacuum pump to purge solenoid valve nipple where Red-striped hose was connected. Apply vacuum to purge solenoid valve. Vacuum should hold.
- Apply battery voltage to purge solenoid valve terminals. Vacuum should bleed down when voltage is applied to terminals. Using an ohmmeter, check resistance across purge solenoid valve terminals. If resistance is 36-44 ohms at 68°F (20°C), go to next step. If resistance is not as specified, replace solenoid valve.
- Turn ignition on. Check voltage between ground and purge solenoid valve connector terminal No. 2 (Red wire). If battery voltage exists, go to next step. If battery voltage does not exist, check wiring harness between MFI relay and purge solenoid valve connector.
- Turn ignition off. Disconnect PCM connector. Turn ignition on. Check voltage between ground and PCM connector terminal No. 9 (Light Green/Black wire). If battery voltage exists, check PCM connector. If PCM connector is okay, replace PCM. If battery voltage does not exist, check purge solenoid valve connector and wiring harness between PCM and purge solenoid valve connector.